I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *
Edition: Model Aviation - 1981/07
Page Numbers: 33, 34, 35, 36, 37, 110, 111, 112
I got Level II last months Part 1 youll know what ZAH means hopefully youll have chance practice month continue conclude five level structured program learning fly RC Helicopter Part 2E Tom Burdin comments advice John Simone Jr ib\ 2 Ft - / 3 -FLI LEVEL III maneuvers level accotnp lished calm air Task Description Measurement Criteria 1 The student will able raise Heli copter vertically altitude 3 ft return directly 1-ft square maneuver began Orientation will tail towards pilot 2 student will able raise Helicop ter vertically altitude 3 ft maintain 3-mm hover altitude within radius three feet lift-off square 3 student will able raise Helicop ter vertically altitude 3 ft negotiate Level II triangular course clockwise CW counterclockwise CCW pausing 1 mm hover over square Orientation must remain tail towards pilot Discussion think spent lot time Level II youre about establish new record level real meat training learning should greatest As have doing up now well build slowly difficulty point control craftto amazement around First need retrim machine airborne flight zero altitude hovering ZAH required different trims well now trim airborne stay trim mode awhile Again dont forget note settings future re-buildsyes will have oppor tunity will minimized follow Markers needed define various practice courses flag supported -sq balsa ex cellent wont break rotor blades Fig 9 shows flag base should made July 1981 33 interested looks Id better start building said notes author Course provides progressive steps learning fly Twenty-five feet marked bythe flag doesnt seem like much until RC Helicopter safetyand minimum risk chopper try comes second task Level V begin climb reduce lift slowly settle back slowly ground Just last month John Simone Jr will provide comments time-to-time identified symbol JS beginning ending comments JS Dont relax until solidly ground again rotor speed reduced low level can tip machine over ground time rotor creating enough lift tilt itself Usually high rotor speed can saving grace can maintain control though flying has its watch-outs too dont chop power get trouble altitude old fixed-wing safety valve sure disaster Helicopter JS first little bounce may few inchesthis fine Increase height bounce little time noting correcting trim servo connector Start tail rotor T/R proceed sequentially rightlleft cyclic forward/aft cyclic Con tinue process bouncing until can observe trim settings 3-ft altitude position behind machiie should still 8-12 feet Its OK take up couple tanks fuel get 3-ft level Pace yourself No competition herejust solid learn ing may retrim time during process OK also Remenber learn safely minimum aircraft damage dont hurry Youve completed first maneuver can raise Helicop ter straight up slowly 3 ft return slowly pad impartial honest observer will verify OKso much bouncing around Its time hover maneuver no exten sion previous maneuver youve trimmed out properly should now have confidence machines stability need antici pate control inputs Begin bounce maneuver again reach 3-ft reduce power start down reduce level slightly above normal descent power levelsuch machine seems pause 3 ft momen tarily reduce lift last little bit return terra firma may tempted try lower altitude Resist temptation Control much better 3 ft I-ft because youre out 34 Model Aviation LE hase shown h cIic rear cyc training strictly accidents will flappen uoii deep breath get things stabilized What throw away ZAH trim level settings well want lift off altitude 3 ft ZAH again Level IV come right back down like yo-yo-slowly Begin friendly square again go doing going notice ZAH should easy comfortable machines reactions retrim axis nowlittle body Enelish reouired Take time Slowly advance lift control until NO OCR TEXT ground effect Also lets face time make correction before hit ground Now just did learned bounce maneuver going master maneuver slowly will simply extend time 3-ft altitude hesitations JS As stabilize hover retrim ming may required Keep mind left/right cyclic trim can upset tail rotor trim tail rotor also contributes L/R stability well countering torque So change L/R trim main rotor will need check T/R trim well JS During early pauses yard air youll learning control cyclic lift tail rotor importantly inter-rela tionships between last two really interactive hover work tail rotor counter engines torque creates power lift Helicopter As lift torque required required remain same altitude Conversely less required descend counter-torque required T/R will mirror lift commands important build some auto-reaction part JS As approach ground descent should slow descent prior touchdown Remember add little T/R cor rection counter torque Again anticipation need smooth control movement pays off IS Throughout hover yo-yo maneuvers CW main rotor M/R Helicopter flying nosethe mode will discussed now onright CW tail rotor control required lift increased CCW control lift decreased amount T/R depends change lift rate change lift hover lift off right T/R required until reach 3 ft actual hover neutral T/R control required trim work successful little left tail rotor required maintain orientation descent As work maintain altitude youll also working maintain tail-in orientation pauses 3-ft should become longer longer become proficient Having someone noting time simply counting time hover~ very helpful note progress maneu ver Keep record hover time youll see recorded times increase towards three-minute mark Up point weve stressed altitude orientation As become proficient hover need become aware position over square make cyclic correc tions back center point Make correc tions small patient goal remain 3 ft height within 3 ft center square three minutes Again use second person verify work dont worry burn up gallon fuel getting point beginning hover practice basic maneuvers needed form firm foundation automatic reactions build up mental model machines performance JS Youll notice first efforts should maintaining control hover position over square Its too easy get fixed square too early process miss some important learning about basic control JS Now its time move about bit ZAH scooted skidded along triangular course now going repeat maneuver 3-ft hover have practicing main taining position hover have developed technique nudging machine left right fore aft Well use technique AEROD ROTOR TOTAL ANGLE RELAT WINU FIG 13 stopp case thes maneuver around triangular course early stages maneuver goal however slow controlled drift point point need emphasize slow drift want get fully forward flight mode youre ready yet Just drift lazily point point no time constraint maneuver begin maneuver enter now-famous 3-ft hoverit should easy nowwith tail oriented towards usual Now nudge cyclic direction want go maintaining orientation altitude As ease over second square should series short spurtsin rather herky jerky manner goal smooth Out spurts produce drifting motion mentioned earlier As reach next square pause hover 1 mm 3-ft altitude before proceeding next point triangie feel comfort able drifting around CW CCW get friend verify performance lot discussion level Dont let lessen mind necessity lot hard work Ill say again foundation building next levels require very strong foundations move HELI-FLI-LEVEL IV maneuvers level accomp lished calm air except noted body discussion Task Descriptions Measurements 1 student will repeat Level III maneuvers light wind conditions 2 The student will able accomplish ZAH maneuver Helicopter tail orienta tion 90 degrees left right tail-in orientation accomplished Level II pilot must directly face side Helicopter maintaining position inside 1-ft square 1 mm ZAH both side orientations must demonstrated 3 The student shall negotiate ZAH triangu lar course two orientations described above Refer Level II description ZAH triangular course flight further details 4 The student will able raise Helicop ter vertically altitude 3 ft hover maintaining 90-degree left right orientation per Task 2 above 5 student shall negotiate ZAH triangu lar course hovering 2 ft Orientation will described Task 2 Other parameters flight shall per Level III maneuver description 6 student will able fly circle around himself two modes maintaining 3 ft altitude 8-10 ft distance 1 tail-in orientation 2 side orientation left right maneuvers shall flown clockwise counterclockwise student should pivot machine position 7 student will remove training landing gear reinstall original factory equipment repeat airborne parts Levels III Iv Discussion Before get main body Level IV bit practice need accomplishflying wind date have indicated calm air flying order day always calm get practice choose day light steady wind gusty Begin facing machine wind now-familiar tail-in orientation lift off hover accomplish triangular course Youll notice little forward cyclic required maintain position Youll need some directed energy maintain position against wind therefore powerwhich will result need tail rotor correction interdependency controls will now become apparent comfortable nose wind situation orient such wind first side Helicopter other Finally put wind back During practice maintain tail-in position will moving about bit Level IV dont try get ahead game no need accomplish practice prior Level IV maneuvers nor have usual impartial judge accomplish practice prior completing remaining Level IV maneuvers wind similar manner above Up now have concentrated maneuvers utilized natural orientation say left left forward forward etc both viewpoint Helicopters reason 36 Model Aviation Level II III maneuvers maintained orientation maximize learning around reactions changes Helicopters position learning Helicopters reactions control inputs Helicopters always fly orientation unless pilots satisfied crawling can learn run other orientations other tail towards pilot require learn re-orient way ofthinking Up now corrections have done prime reference has convenient reference Helicopter rest world has constant respect also now need move mentally inside Helicopter JS idea moving mind inside Helicopter key event must take place before can accomplish forward flight fixed-wing flying get practice beginning because forward way fly actually trained now tail-in flying due Level II III work cant continue forward tail-in forever must turn around come back IS tail pointed orientation same sitting right hand pilots seat Helicopter can train brain believe pilots seat can adapt machine orientation Needless say easier say do will despite brains resistance Recall will three-stage learning model discussed prelude end Level III should have made Stage III process basic tail-in hover maneuvers brain has created internal model whirling flying machine can some extent predict what control inputs necessary correct error waiting see results inputs other words ahead machine facilitate transition other machine orientations need return Stage learning process retrain brainan obviously smarter brain now Well going back ZAH practicing some new orientations described task descrip tions Ive already discussed maneuvers earlier will again except few comments salient changing orientation 1 Make transition full side-on orienta tion slowly Start 30 degrees off both left right presentations go no further until com fortable Rotate back forth 30 degrees left 30 degrees right Dont stay side before learning other Make yourself work learn use tail rotor importantly getting feel flying other tail-in orientation Try thinking yourself actually sitting cockpit reference corrections As proficiency increases begin concentrate staying near square just earlier ZAH maneuvers youre feeling good about flying increase angle 45 60 degrees side repeat above procedure Make incremental changes rate can best handle continue increase angle last 30 degrees real bear must must able left right sides JS Its important cheat yourself using little body English re-adaptation multiple relationships between pilot Helicop ter real keys flying Helicopter plan hover tail-in Make sure machine really 90 degrees bodylook right side dude cheat yourself will pay off later JS 2 Fly ZAH triangle first shallow angles away tail-in increase full broadside positions both left right Pace challenge yourselfwork hard 3 As move hovering side flying hover triangle follow same conservative approach did ZAH maneuvers last maneuver Level IV perhaps challenging combines learning date now learned technique small corrections well-trimmed machine really pays off must feel very comfortable flying hover along triangular course orientations learned up now prior starting maneuver JS good self-test go out local field fly some other modelers watching have courage to fly demonstration skills skeptical triend skills should JS maneuver called out task descrip tions beginning level Refer Fig 7 see diagramed prior beginning practice pilot should rotate such always facing Helicopter Begin standard tail-in position lift off 3 ft Now apply little left right cyclic cause small movement sideways will accomplish two things 1 move Helicopter little farther away 2 move Helicopter such tail rotor pointing directly correction add little rear cyclic some yaw correction same direction initial left right cyclic first just wayleft right cyclic rear cyclic tail rotor Refer Fig 6 see results initial movement result corrections manner point point inch way around circle center JS Weve broken maneuver its basic parts training goal should smooth maneuver corrections simultaneous well anticipated JS Continue practice until circle smooth continous lift-off touch-down same spot Perform maneuver slowly did triangular course previously flown Speed important factorcontrol feeling good about flying direction find friendly judge again demonstrate skills both satisfied fly maneuver opposite direction again get friend give proficiency check Now well try maneuver the side relationship Refer Fig 8 flight path will essentially flying forward now very slowlydont try speed mer chant training during previous circle maneuver still aimed basic skill development Before flying circle get piece paper figure out what will happen begin maneuver Write part HELI-FLI yourself Plan flight maneuver Go slowly concentrate accuracy control manuever should flown both clockwise counterclockwise constant altitude 3 ft Three minutes around circle good target time shoot Any faster Continued page 110 July 1981 37 FEATURES INCLUDE Space battery & meter panel Transmitter compartment Room gallon fuel MASIER AIRSC1U Ii FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnish paint finishes overall size 19Wx9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 joe6e1sewA.dzeexf&zt WRITE FOR COMPLETE PRODUCT LISTING MANUFACTURERS AND DEALERS INQUIRIES INVITED SPECIAL SIZES AVAILABLE ADD $300 FOR POSTAGE AND HANDLING NMG MODELS INC P 0 BOX 396 BY MD 20657 301 326-2554 surface before second applied Koverall will seal fill two three Coats K&B nitrate dope combination accepts polyure thane paints no blistering peeling wing tail surfaces can also covered Koverall highly durable structurally strong inexpensive finish However wings tail sufficently rigid safe use sucfi films MonoKote Im sure about lower temperature films however Flying thorough check-out systems components should conducted leisurely pace home Once everything working per fectly haul yourself Rearwin Junior nearest flying field prepared have ball Ground handling squirrely BALSA SHEETS 4x48x/ie49 4x48x3A3252 4x48x%62 4x48x3/1674 4x48x90 4x48x/2108 6x48x/it74 6x48x3A3278 6x48x/893 6x48x135 6X48x/2162 PLYWOOD 6x48xA32125 6x48x/ie136 6x48x3A32175 6x48x/a185 6x48x3/16240 6x48x280 BALSA BLOCKS 1x2x2462 1x3x2486 1x4x24126 2x2x2486 2x3x24126 3x3x24240 tail-dragger Just advance throttle slowly until rudder gets bite air As throttle advanced will break ground little need up elevator Turns rudder-only gentle slightly reverse rudder control level wings ailerons model requires some opposite rud der counteract dihedral particularly left turn Landings slow gentle needs line up runway about 150 ft out 30 ft high retard throttle let float glide such may have resort down elevator get wheels Onto grass Junior has natural tendency land three-point attitude sufficient speed burned off airplane can flown anyone has 110 Model Aviation bit stick time Old-Timer Stalls mushy havent able spin has no tendency snap low speed nor pitch high speed Rearwin Junior flies like heavy Old-Timer RC assistnot surprising development thats really what Build yourself construction simple strong flies beautifully Most amazingly realistic air fun-to-work ratio design leans strongly fun side Enjoy References Aviation History Greater Kansas City Cub Flyers Publications Library Congress Catalog No 74-119630 Lightplanes Since 1909 John Underwood George Collinge Heritage Press Library Congress Catalog No 69-17709 Air Progress January 1968 Wonder ful Rearwins Some Giant Birds John W Underwood Vintage Veteran Aircraft Guide John Underwood Collinwood Press Library Congress Catalog No 68-28978 Collect-Air Photos PO Box 14234 Milwau kee WI 53214 set No 136 Big Bangers/Beckman Continued page 32 respect Quadra its capabilities three engines easy starting Thrust outputs some cases surprisingly high improving running time Vibration levels excessive lower some other chainsaw-derived engines added considerations availability price its hard beat wish thank following support portion project Dario Brisighella 1032 East Manitowoc Ave Oak Creek WI 53154 CB Associates Inc 21658 Cloud Way Hay ward CA 94545 Dynathrust Props Inc 2541 NE 11th Court Pompano Beach FL 33062 Grish Bros St John IN 46373 JZ ProductsZinger 25029S Vermont Ave Harbor City CA 90710 Top Flite Models Inc 1901 Narragansett Ave Chicago IL 60639 Trail Manufacturing Ltd Huron Park Ont NOM lYO Canada H ELI- FLI/Burdin Continued page 37 doing maneuver correctly wdrd flight will come Level V get practice basics finished calm weather practice go back repeat Level IV ma neuvers light breeze JS Dont think trying circle-arounds wind until previous work has practiced windy conditions wind direction will constant its effect Helicopter will continously change fly around circle Approach maneuver same caution did first circle-around practice wind emphasized level unless learn youll always waiting calm day evening youll get little flying JS finally comfortable wind various orientations its time remove training gear return original factory-supplied equipment will some obvious changes machines performance THE CHEROKEE THE REAPER BalsaBalsa Fuselage Fast Assembly S/ow FlyingSheeted Foam Core Wing 3-4 Channels4-6 Channels 19-25 Engine40-60 Engine $6995 need discussed 1 The response lift inputs will rapid Helicopter will appear responsive overall due usually lighter factory equipment compared training equipment Dont rapidly advance lift first time fly narrow gear may have hands full 2 Ground ZAH cyclic response will tend cause machine tip over rather easily until get accustomed much lift required scoot along ZAH training gear protected up now prepared start flying engine leaves idle Also wary landings same reasons 3 Airborne cyclic response will improve some what due lighter pendulum under rotor plane less mass move welcomed change much tighter control would have welcomed Level II 4 It yaw axis will see big change training gear inertia really slows down reactions engine torque changes own tail rotor changes has fine up now optimized learning giving think time training gear removed will have update mental model yaw axis system learn tighten up control inputs key other axes smooth early small changes control stick positions changing landing gear does nothing else should wake up get attention prior entering forward flight Level V level brings close emphasis basic conditioning Youve probably gone through quite bit fuel rotor blades patience worth though because good solid foundation will give confidence takes move forward flight have given serious attention basic maneuvers practice sessions go back again Level V demands control Helicopter solid solidly control lets put stick forward move HELI-FLI-LEVEL V Task Descriptions 1 From 3-ft hover student will climb 10-12 feet establish hover student will begin descent 3-ft hover followed landing Descent time high hover should 3 sec maximum Position over square will maintained throughout well lateral distance 8-12 ft 2 From 3-ft hover student will fly forward wind distance 25 ft returning 3-ft hover end flight Altitude will kept between 3 6 ft Orienta tion should remain tail-in Forward speed should limited fast walk about 10 sec lift-off final hover 3 From 3-ft hover student will climb 10-12-ft hover Forward flight will proceed wind terminated descending approach 3-ft hover 50 ft starting point Orientation will tail-in forward speed will equal medium run 4 student will fly race track pattern shown Figure 14 course will flown clockwise counterclockwise speed equal fast run Discussion Its line now Weve reached end preliminaries need take big step forward flight previous levels have built good solid foundation Send 60d complete literature price list kits ac cessories Specialists custom 70 049/051 reed engines Throttled 70 available Complete inventory Individual stock custom parts Cox 70 020 049 051 A09 engines Exclusive distributo Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-offs solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5102 Announcing /5 VK WSRE WHEELS ED & REALISTIC Custom built seamists machined rims Delrin bearings two sizes B Nieuport & Triplane 5 5 Proctor models $3595 QUALITY R/C PRODUCTS SINCE 1960 CUSTOM TUNED ENGINES COMPETITION ACCESSORIES ii ek Irstorediately upon acquisition Ace ThC Inc etude service parts available repair centers around world people ProLine systems coald beep goittg aad afraid theyd left cold expeasive radio no has patta felt shin obligation out fellow otodeteta although will never ntnke penoy doing Curtently intl throogh material analyze what have seating ap production replacement coasponensa such battery pachs servos receivers switch harnesses chargers etc misting ProLines will ready tegnlar basis As looh future Ace will prodace line radios ursder ProLiae label will combine oar 28 years enperiersee ProLines dedication quality prodace radio feel wiS carry ca tradition aamarched performaace aad de peadabdiry directed toward tony dedicated SIC modeler aruasmilter will consist basically peosra ProLine gimbals enceplional 5ilver Seven eacoder has beea aaiversally ac cepted will apgrade receiver servos positive palse compatability wore efficient operation goal will re line what made ProLine moat used radio competition circler several years ago add things necessary update current state-of-the-art waite once again Winners hdge cerraiuialy plan stand behind what manafacrnre trap 2b years thss hastoess rn proof Pro Line Electronics Division AU I/ mn would like Info parts service call write PRO LINE Box 735 E 203 W 19th St HigginsvilleMo 64037 Telephone 816 584 7121 July1981 111 NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size bulkhead firewall up toProvides sealed tank compartment elImInates fuel lIne chaffing Color Coded Identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for $195 FOURMOST PRODUCTS Bomb Release Fourmost Bomb-release mechanism simple light weIght device Ideal fun-fly events Fasten unit plane screws provided Attach spring-loaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon sprIng Stainless Weight 1/10 OUNCE PRICE $250 4040 24th Ave Forest Grove OR 97116503 357-2732 THE RISING STAR IN N GIANT SCALE ENGINES * -K -K -K 4 honest yourself feel youre still little shakey Level IV go back keep working until youre very very comfortable Helicopter previous maneuvers dont have level confi dence go back Youll risk too much going previous levels John Simone has supplied comments add some perspective additional information what doing course study level almost Johns method adapted FLI learning model Ive written notes added supportive data hence JS comments will appear end-point level able fly race track courseno Beyond up Well approach end same way have pointstep step 24 cc inch 32 HP 8000 RPM 51/i lbs 3 Ring Piston Ball Bearings Crank Sealed Points MPGS BUG RETAIL 219GB Dealer Inquiries Welcome ROUSH P0 Box 251 Sandyville OH 44671 Ph 216/866-9462 216/484-4374 First need developthe skills necessary stop descent transition hover way forward flight should end As usual start 3-ft hover stable begin vertical climb about 10-12 ft establish hover now should able handle T/R adjustments required increase power climb stable high hover reduce lift little slowly drift downstopping 3 ft hover Continue process until can make fairly rapid descent about 3 sec stop 3-ft hover Its important proficient simple maneuver used flight involving lateral motions will often used rescue mode early forward flight training Keep mind descending vertically will passing through own rotor wash say will descend through turbulence created rotor blades will make machine somewhat skittery admonished about evaluating basic skills situation dangerous need toes time Ill once again ask self-check proficiency maneuvers point proceed youre honestly ready Youre now finished maneuvers can performed limited area require hard smooth surface go out find field continue training Dimensions 300 400 feet side would about minimum size should have smooth area takeoffs landings Also make sure still have privacy initial landing zone LZ measure out about 25 feet Set marker down can see standing 25 feet away Fig 9 shows handy base flag markers going need three 25-ft pace-offsall straight line wind maneuver wind should light steady practice day will require new pace-off unless have meteorological anomaly wind always same direction Heres what going Ill discuss 3-ft hover going fly forward next LZ maintaining between 3 6 ft altitude Pause next zone 3ft hover walk up Helicopter continue next LZ same manner last LZ 1800 tail-in circle-around Level IV walk machine back initial LZ Perform another circle-around land wind Maintain tail-in orientation throughout maneuver Well start ma neuver very slowly work up speed fast walk Now discussion going talk about system balance next series tricks Helicopter Refer Fig 10 notice Helicopter hover has forces equalized maintain overall system balance going look two forces realizing need other two essential also should old hat nowleft right cyclic plus T/R Figure 11 shows two forces lift/gravity fore/aft Youll again see balance system please note lift always perpendicular rotor plane machine move forward must unbalance forces forward force rearward Fig 12 shows exaggerated forward tilt machine required divert portion vertical lift rearward gain forward thrust also note divert portion rearward must give up some vertical lift Since weight Helicopter has changed Helicopter will sink Therefore need little lift avoid sinking ground Now moving another force comes play have dealt before translational lift As machine moves forward forward speed added rotor speed lift developed just fixed-wing aircraft Thus once moving forward excess lift develops must reduce power again put learning practice begin ward flight add just enough power cause slow climb stable 3-ft hover will add additional lift need beginning forward flight order avoid sinking see climb begin nudge cyclic forward begin slow forward flight altitude begins increase will translational lift occurs reduce power hold altitude 112 Model Aviation 1 YEAR WARRANTY WARRANTY OR SERVICE WORK CAN RE SORE BY ROOSR MFO OR YOOR NEAREST ECRO-KIORITZ PRODUCTS DEALER * * * * * * *-K-K*K*KK*K*KK 4** -K** K** ** Exhaust Manifold Velocity Stack Kits Available *