DB Mathews ZI n1m following fundamental material might lead reader say already know skip column Yet brief refresher order considering failure remember several instances Its Gas Earths atmosphere composed molecules several gases ranging oxygen rare ones such helium atmosphere held round Earths surface gravity thins nothing about 100 miles up closer earths surface atmosphere lies dense law physics states heating gas causes its molecules disperse proportion temperature conversely cooling gas causes its molecules move closer other becomes dense So What variables gas densities severely affect full-scale model flight several ways Less-dense gases have fewer molecules moving across wing given vertical speed warm air provides less lift cool expanded gas also provides fewer molecules per ingested volume internal combustion engine adversely affecting its air/fuel mixture same phenomenon affects propeller efficiency much same way affects wing makeup atmosphere ingested internal-combustion engine affects its performance air contains higher amounts moisture power produced per gulp greatly decreased humidity altitude temperature increase fuel mixture must leaned since less air fuel mix variables calculated arrive mathematical representation atmospheric conditions derive index called ity altitude Its critical importance flight Full-scale aircraft ranging simple single-engine Cub highperformance WW II fighter have some method calculating altitude temperature humidity wind velocity takeoff weight enable pilot arrive safe takeoff landing speeds controlled airports towers meteorologic service provides data flights Cropdusterswho often operate non-updated facilitiesactually measure heat humidity wind velocity altitude calculate safe loading spray airplanes situations airports air temperature and/or altitude higher normally encountered aircraft can often require 20% 30% runway order fly Once air rate climb can also severely degraded aerobatic 122 Model Aviation eese Reservoir Silver Cliff CO 8000 feet altitude Sangre De Cristo range Rocky Mountains background 14000 feet high Sea Cruiser built Hangar Designs kit Jim Rogers Rich Concialdis Pueblo CO Vought OSU-2 Kingfisher Thunder Pueblo CO Merco 60 power MonoKotenice flier Tiger 36 added ailerons MonoKote 5 pounds Chain fell through holes fastened lead will pulled back toward center section Chain secured clothespin maneuvers must adjusted variables driven home watching Air Disasters piece Learning Channel videos five Aerobatic airplanes completing Inside Loops below ground level airshows three Pitts biplanes Sukhoi beautifully restored Spitfire Mk IX crashed burned pilots died pilots probably done Inside Loops aircraft numerous times well qualified otherwise would have special clearance FAA Federal Aviation Administration perform aerobatics below 500 feet simply messed up failing consider density altitude factors Airshows frequently scheduled summer months segments often flown during hottest part day Add unfamiliar airports natural desire thrill crowd accidents become understandable Pitts crashed snow-covered ground mountainous area leading conclude accident related air temperature air thinned altitude Us same density altitude factors apply model airplanesFree Flight Control Line Radio Control RC Have ever flown model skis winter Did notice much shorter takeoff runs strong engine ran smoothly model flew particularly compared same model hot days summer attended two fly-ins held 1000 days Several models lifted off after usual takeoff run length stagger side side before accelerating flying speed Landings inclined same side-to-side semistall phenomenon though several fliers blaming radio interference Two models crashed final radio failure thumbs running sticks What saw reduced lift engine performance propeller efficiency associated heat-related density altitude changes thats enough make pilot aware impact heat humidity altitude adjust ones flying according conditions also attended Float Fly Silver Cliff Colorado flown lake 8000 feet Flying RC model floats challenge time requiring power longer takeoff runs careful piloting compensate added drag weight floats Add high altitude lowered density atmosphere equation have real challenge took 60-powered model flown rather well floats 1800 feet usually jumping right off water flying respectable aerobatics Silver Cliff unable get fool thing break surface Takeoff runs extended much slightest misalignment floats grossly exaggerated other hand several fliers area able fly successfully larger-than-normal engines aircraft floats tracked well enough allow long takeoff runs did get impatient takeoffs landings However several float planes flew adequately morning hours Silver Cliff could get off water afternoon Because air temperature increased about 200 changing marginal takeoffs cool morning air failures warmer afternoon Turning high altitude problems around friend Paul Schlegel flies float models Gunnison Colorado about 7700 feet years ago insisted try flying off floats did Paul flying 4-60s 90 four-stokes etc no difficulty performed quite well next summer Paul attended Ace Float Fly Higginsville MO same models altitude lower 7000 feet Paul fired up 4-60 placed water advanced throttle accustomed rpm immediately airplane leapt air well before ready fly absolutely astounded engine/airplane/prop combination working vastly better lower altitudes Density altitude works both ways Youll have just much fun flying hot days high altitudes consider density altitude compensate say Think little before horsing model off ground doing lowaltitude aerobatics slowing down final Elementary Watson fliers Silver Cliff brought float-equipped model flown successfully several years including location day model would accelerate nicely water refused rotate break flight aircraft same previously successful power plant propeller no changes float rigging etc made slight change smoothing up flat-bottom foam floats little removing wedge aft bottom portion widest part back what happened advantage 12-hour return trip time reflect puzzle about things such arrived explanation whether correct remains seen reducing width rearmost portion floats could push farther down water up elevator applied caused wing reach higher angle attack placed stalled condition small change floats put wing too high angle attack good lift presume takeoff problem could have cured shimming aft fuselage/float attachment bit wing running lower angle attack rotation Thats take whats yours Hint little construction gimmick has worked well last three December 1998 123 Ball chain used thread extension leads through wing holes Right has pulled through temporarily taped down ProIVLagTM Mag Wheels NC machined aerospace-grade aluminum barstock Nytonbushings friction-free running long Wear RadiusBd corners high-stress areas FivdspoJe man wheel functional good looks Tire Retention System ig power hub keep wheel collar sized fit 5/32 axles including ts Aluminum C-Clip Axles oirrxoie lightweight flat-spot resistant foam design smooth ground u good looks iient foam tires nylon uIIiIItl5 readily available VISA Master Card welcome Dealer inquiries invited call write Precision Model Products 3 Hix St nia Michigan 48154 432-1093 four projects shop Ive decided share Although Ive tried repeatedly photograph cant come up way illustrate clearly youll bear Ill try explain can look photos Remember chains used attached bathtub stoppers kept people making off pens bank post office series small round metal balls joined together segments wire stuff actually still available hardware stores ball chain super threading servo extensions through holes dropping chain slowly through smaller opening wing gently dragging across ribs can actually feel fall through hole fishing repeated until chain appears servo well point both ends chain should secured clothespin avoid having fall back servo extension plugged onto chain gently drawn out smaller hole Once done extension lead plugged servo lead connection tightly wrapped heat shrink electrical tape trick learning curve involved developing feel chain dropping through holes wing etc held close vertical since gravity doing work Only small amounts chain fed time avoid bunching technique usually eliminates need paper guide tubes long connectors wrapped avoid unwanted disconnects simple idea works really well Give try dont like can use chain keep track hobby knife C 0S32 SX 0S46 SF OS46SX0546FX 0546 FX 0S46 VF 0S46 EX-H 0546 VR 0561 RFN-H0S61 RFN-H 0S61 SFN-H0561 SEN-H 0S61 SX 0S61 Hanno SpI 0S61 RX 0S91 VRDF 0561 SXWC 0S108 FSR 0S65 VRM Y546 FR 0S65 VRDF Y545 ES 0S91 VRDE 0S14D RX Y561 ST-H 124 Model Aviation Nationals Winner Bill Hemple Edge 540 1st Place MAC Nationals Unlimited Division end 1st Mace Free Stle Event Edoe 540 also place 4th MAC Nationals three oat of tea 1997 Masters Tournament Also Available 33% Laser 200120 Extra 300 40% G20237% 300L 25% Edge 5401/4 Scale Extra 120 Ultimate Profile Nimdniilt Manakete Covered Hand Painted Fiherlass Parts S35l 121 Sine Extra 300 120 Size Ihimate 1z nioai IA Uflit U Aurora Al UU13 Ph 1303 367-9792 755-5826 worRsFax 303-306-1141 WORLD CLASS AIRCRAFT~ True Chrome Will Peel Custom Porting High Performance Pistons/Cylinders V Timing Options Available Some Versions Factory Installation Available Send $3 00 1998 Catalog Dealer Inquiries Welcome PERFORMANCE SPECIALTIES P 0 Box 3146 nerville NV 89410 e 702-265-7523 702-265-7522 E-mail perfspec@acinet
Edition: Model Aviation - 1998/12
Page Numbers: 122, 123, 124
Edition: Model Aviation - 1998/12
Page Numbers: 122, 123, 124
DB Mathews ZI n1m following fundamental material might lead reader say already know skip column Yet brief refresher order considering failure remember several instances Its Gas Earths atmosphere composed molecules several gases ranging oxygen rare ones such helium atmosphere held round Earths surface gravity thins nothing about 100 miles up closer earths surface atmosphere lies dense law physics states heating gas causes its molecules disperse proportion temperature conversely cooling gas causes its molecules move closer other becomes dense So What variables gas densities severely affect full-scale model flight several ways Less-dense gases have fewer molecules moving across wing given vertical speed warm air provides less lift cool expanded gas also provides fewer molecules per ingested volume internal combustion engine adversely affecting its air/fuel mixture same phenomenon affects propeller efficiency much same way affects wing makeup atmosphere ingested internal-combustion engine affects its performance air contains higher amounts moisture power produced per gulp greatly decreased humidity altitude temperature increase fuel mixture must leaned since less air fuel mix variables calculated arrive mathematical representation atmospheric conditions derive index called ity altitude Its critical importance flight Full-scale aircraft ranging simple single-engine Cub highperformance WW II fighter have some method calculating altitude temperature humidity wind velocity takeoff weight enable pilot arrive safe takeoff landing speeds controlled airports towers meteorologic service provides data flights Cropdusterswho often operate non-updated facilitiesactually measure heat humidity wind velocity altitude calculate safe loading spray airplanes situations airports air temperature and/or altitude higher normally encountered aircraft can often require 20% 30% runway order fly Once air rate climb can also severely degraded aerobatic 122 Model Aviation eese Reservoir Silver Cliff CO 8000 feet altitude Sangre De Cristo range Rocky Mountains background 14000 feet high Sea Cruiser built Hangar Designs kit Jim Rogers Rich Concialdis Pueblo CO Vought OSU-2 Kingfisher Thunder Pueblo CO Merco 60 power MonoKotenice flier Tiger 36 added ailerons MonoKote 5 pounds Chain fell through holes fastened lead will pulled back toward center section Chain secured clothespin maneuvers must adjusted variables driven home watching Air Disasters piece Learning Channel videos five Aerobatic airplanes completing Inside Loops below ground level airshows three Pitts biplanes Sukhoi beautifully restored Spitfire Mk IX crashed burned pilots died pilots probably done Inside Loops aircraft numerous times well qualified otherwise would have special clearance FAA Federal Aviation Administration perform aerobatics below 500 feet simply messed up failing consider density altitude factors Airshows frequently scheduled summer months segments often flown during hottest part day Add unfamiliar airports natural desire thrill crowd accidents become understandable Pitts crashed snow-covered ground mountainous area leading conclude accident related air temperature air thinned altitude Us same density altitude factors apply model airplanesFree Flight Control Line Radio Control RC Have ever flown model skis winter Did notice much shorter takeoff runs strong engine ran smoothly model flew particularly compared same model hot days summer attended two fly-ins held 1000 days Several models lifted off after usual takeoff run length stagger side side before accelerating flying speed Landings inclined same side-to-side semistall phenomenon though several fliers blaming radio interference Two models crashed final radio failure thumbs running sticks What saw reduced lift engine performance propeller efficiency associated heat-related density altitude changes thats enough make pilot aware impact heat humidity altitude adjust ones flying according conditions also attended Float Fly Silver Cliff Colorado flown lake 8000 feet Flying RC model floats challenge time requiring power longer takeoff runs careful piloting compensate added drag weight floats Add high altitude lowered density atmosphere equation have real challenge took 60-powered model flown rather well floats 1800 feet usually jumping right off water flying respectable aerobatics Silver Cliff unable get fool thing break surface Takeoff runs extended much slightest misalignment floats grossly exaggerated other hand several fliers area able fly successfully larger-than-normal engines aircraft floats tracked well enough allow long takeoff runs did get impatient takeoffs landings However several float planes flew adequately morning hours Silver Cliff could get off water afternoon Because air temperature increased about 200 changing marginal takeoffs cool morning air failures warmer afternoon Turning high altitude problems around friend Paul Schlegel flies float models Gunnison Colorado about 7700 feet years ago insisted try flying off floats did Paul flying 4-60s 90 four-stokes etc no difficulty performed quite well next summer Paul attended Ace Float Fly Higginsville MO same models altitude lower 7000 feet Paul fired up 4-60 placed water advanced throttle accustomed rpm immediately airplane leapt air well before ready fly absolutely astounded engine/airplane/prop combination working vastly better lower altitudes Density altitude works both ways Youll have just much fun flying hot days high altitudes consider density altitude compensate say Think little before horsing model off ground doing lowaltitude aerobatics slowing down final Elementary Watson fliers Silver Cliff brought float-equipped model flown successfully several years including location day model would accelerate nicely water refused rotate break flight aircraft same previously successful power plant propeller no changes float rigging etc made slight change smoothing up flat-bottom foam floats little removing wedge aft bottom portion widest part back what happened advantage 12-hour return trip time reflect puzzle about things such arrived explanation whether correct remains seen reducing width rearmost portion floats could push farther down water up elevator applied caused wing reach higher angle attack placed stalled condition small change floats put wing too high angle attack good lift presume takeoff problem could have cured shimming aft fuselage/float attachment bit wing running lower angle attack rotation Thats take whats yours Hint little construction gimmick has worked well last three December 1998 123 Ball chain used thread extension leads through wing holes Right has pulled through temporarily taped down ProIVLagTM Mag Wheels NC machined aerospace-grade aluminum barstock Nytonbushings friction-free running long Wear RadiusBd corners high-stress areas FivdspoJe man wheel functional good looks Tire Retention System ig power hub keep wheel collar sized fit 5/32 axles including ts Aluminum C-Clip Axles oirrxoie lightweight flat-spot resistant foam design smooth ground u good looks iient foam tires nylon uIIiIItl5 readily available VISA Master Card welcome Dealer inquiries invited call write Precision Model Products 3 Hix St nia Michigan 48154 432-1093 four projects shop Ive decided share Although Ive tried repeatedly photograph cant come up way illustrate clearly youll bear Ill try explain can look photos Remember chains used attached bathtub stoppers kept people making off pens bank post office series small round metal balls joined together segments wire stuff actually still available hardware stores ball chain super threading servo extensions through holes dropping chain slowly through smaller opening wing gently dragging across ribs can actually feel fall through hole fishing repeated until chain appears servo well point both ends chain should secured clothespin avoid having fall back servo extension plugged onto chain gently drawn out smaller hole Once done extension lead plugged servo lead connection tightly wrapped heat shrink electrical tape trick learning curve involved developing feel chain dropping through holes wing etc held close vertical since gravity doing work Only small amounts chain fed time avoid bunching technique usually eliminates need paper guide tubes long connectors wrapped avoid unwanted disconnects simple idea works really well Give try dont like can use chain keep track hobby knife C 0S32 SX 0S46 SF OS46SX0546FX 0546 FX 0S46 VF 0S46 EX-H 0546 VR 0561 RFN-H0S61 RFN-H 0S61 SFN-H0561 SEN-H 0S61 SX 0S61 Hanno SpI 0S61 RX 0S91 VRDF 0561 SXWC 0S108 FSR 0S65 VRM Y546 FR 0S65 VRDF Y545 ES 0S91 VRDE 0S14D RX Y561 ST-H 124 Model Aviation Nationals Winner Bill Hemple Edge 540 1st Place MAC Nationals Unlimited Division end 1st Mace Free Stle Event Edoe 540 also place 4th MAC Nationals three oat of tea 1997 Masters Tournament Also Available 33% Laser 200120 Extra 300 40% G20237% 300L 25% Edge 5401/4 Scale Extra 120 Ultimate Profile Nimdniilt Manakete Covered Hand Painted Fiherlass Parts S35l 121 Sine Extra 300 120 Size Ihimate 1z nioai IA Uflit U Aurora Al UU13 Ph 1303 367-9792 755-5826 worRsFax 303-306-1141 WORLD CLASS AIRCRAFT~ True Chrome Will Peel Custom Porting High Performance Pistons/Cylinders V Timing Options Available Some Versions Factory Installation Available Send $3 00 1998 Catalog Dealer Inquiries Welcome PERFORMANCE SPECIALTIES P 0 Box 3146 nerville NV 89410 e 702-265-7523 702-265-7522 E-mail perfspec@acinet
Edition: Model Aviation - 1998/12
Page Numbers: 122, 123, 124
DB Mathews ZI n1m following fundamental material might lead reader say already know skip column Yet brief refresher order considering failure remember several instances Its Gas Earths atmosphere composed molecules several gases ranging oxygen rare ones such helium atmosphere held round Earths surface gravity thins nothing about 100 miles up closer earths surface atmosphere lies dense law physics states heating gas causes its molecules disperse proportion temperature conversely cooling gas causes its molecules move closer other becomes dense So What variables gas densities severely affect full-scale model flight several ways Less-dense gases have fewer molecules moving across wing given vertical speed warm air provides less lift cool expanded gas also provides fewer molecules per ingested volume internal combustion engine adversely affecting its air/fuel mixture same phenomenon affects propeller efficiency much same way affects wing makeup atmosphere ingested internal-combustion engine affects its performance air contains higher amounts moisture power produced per gulp greatly decreased humidity altitude temperature increase fuel mixture must leaned since less air fuel mix variables calculated arrive mathematical representation atmospheric conditions derive index called ity altitude Its critical importance flight Full-scale aircraft ranging simple single-engine Cub highperformance WW II fighter have some method calculating altitude temperature humidity wind velocity takeoff weight enable pilot arrive safe takeoff landing speeds controlled airports towers meteorologic service provides data flights Cropdusterswho often operate non-updated facilitiesactually measure heat humidity wind velocity altitude calculate safe loading spray airplanes situations airports air temperature and/or altitude higher normally encountered aircraft can often require 20% 30% runway order fly Once air rate climb can also severely degraded aerobatic 122 Model Aviation eese Reservoir Silver Cliff CO 8000 feet altitude Sangre De Cristo range Rocky Mountains background 14000 feet high Sea Cruiser built Hangar Designs kit Jim Rogers Rich Concialdis Pueblo CO Vought OSU-2 Kingfisher Thunder Pueblo CO Merco 60 power MonoKotenice flier Tiger 36 added ailerons MonoKote 5 pounds Chain fell through holes fastened lead will pulled back toward center section Chain secured clothespin maneuvers must adjusted variables driven home watching Air Disasters piece Learning Channel videos five Aerobatic airplanes completing Inside Loops below ground level airshows three Pitts biplanes Sukhoi beautifully restored Spitfire Mk IX crashed burned pilots died pilots probably done Inside Loops aircraft numerous times well qualified otherwise would have special clearance FAA Federal Aviation Administration perform aerobatics below 500 feet simply messed up failing consider density altitude factors Airshows frequently scheduled summer months segments often flown during hottest part day Add unfamiliar airports natural desire thrill crowd accidents become understandable Pitts crashed snow-covered ground mountainous area leading conclude accident related air temperature air thinned altitude Us same density altitude factors apply model airplanesFree Flight Control Line Radio Control RC Have ever flown model skis winter Did notice much shorter takeoff runs strong engine ran smoothly model flew particularly compared same model hot days summer attended two fly-ins held 1000 days Several models lifted off after usual takeoff run length stagger side side before accelerating flying speed Landings inclined same side-to-side semistall phenomenon though several fliers blaming radio interference Two models crashed final radio failure thumbs running sticks What saw reduced lift engine performance propeller efficiency associated heat-related density altitude changes thats enough make pilot aware impact heat humidity altitude adjust ones flying according conditions also attended Float Fly Silver Cliff Colorado flown lake 8000 feet Flying RC model floats challenge time requiring power longer takeoff runs careful piloting compensate added drag weight floats Add high altitude lowered density atmosphere equation have real challenge took 60-powered model flown rather well floats 1800 feet usually jumping right off water flying respectable aerobatics Silver Cliff unable get fool thing break surface Takeoff runs extended much slightest misalignment floats grossly exaggerated other hand several fliers area able fly successfully larger-than-normal engines aircraft floats tracked well enough allow long takeoff runs did get impatient takeoffs landings However several float planes flew adequately morning hours Silver Cliff could get off water afternoon Because air temperature increased about 200 changing marginal takeoffs cool morning air failures warmer afternoon Turning high altitude problems around friend Paul Schlegel flies float models Gunnison Colorado about 7700 feet years ago insisted try flying off floats did Paul flying 4-60s 90 four-stokes etc no difficulty performed quite well next summer Paul attended Ace Float Fly Higginsville MO same models altitude lower 7000 feet Paul fired up 4-60 placed water advanced throttle accustomed rpm immediately airplane leapt air well before ready fly absolutely astounded engine/airplane/prop combination working vastly better lower altitudes Density altitude works both ways Youll have just much fun flying hot days high altitudes consider density altitude compensate say Think little before horsing model off ground doing lowaltitude aerobatics slowing down final Elementary Watson fliers Silver Cliff brought float-equipped model flown successfully several years including location day model would accelerate nicely water refused rotate break flight aircraft same previously successful power plant propeller no changes float rigging etc made slight change smoothing up flat-bottom foam floats little removing wedge aft bottom portion widest part back what happened advantage 12-hour return trip time reflect puzzle about things such arrived explanation whether correct remains seen reducing width rearmost portion floats could push farther down water up elevator applied caused wing reach higher angle attack placed stalled condition small change floats put wing too high angle attack good lift presume takeoff problem could have cured shimming aft fuselage/float attachment bit wing running lower angle attack rotation Thats take whats yours Hint little construction gimmick has worked well last three December 1998 123 Ball chain used thread extension leads through wing holes Right has pulled through temporarily taped down ProIVLagTM Mag Wheels NC machined aerospace-grade aluminum barstock Nytonbushings friction-free running long Wear RadiusBd corners high-stress areas FivdspoJe man wheel functional good looks Tire Retention System ig power hub keep wheel collar sized fit 5/32 axles including ts Aluminum C-Clip Axles oirrxoie lightweight flat-spot resistant foam design smooth ground u good looks iient foam tires nylon uIIiIItl5 readily available VISA Master Card welcome Dealer inquiries invited call write Precision Model Products 3 Hix St nia Michigan 48154 432-1093 four projects shop Ive decided share Although Ive tried repeatedly photograph cant come up way illustrate clearly youll bear Ill try explain can look photos Remember chains used attached bathtub stoppers kept people making off pens bank post office series small round metal balls joined together segments wire stuff actually still available hardware stores ball chain super threading servo extensions through holes dropping chain slowly through smaller opening wing gently dragging across ribs can actually feel fall through hole fishing repeated until chain appears servo well point both ends chain should secured clothespin avoid having fall back servo extension plugged onto chain gently drawn out smaller hole Once done extension lead plugged servo lead connection tightly wrapped heat shrink electrical tape trick learning curve involved developing feel chain dropping through holes wing etc held close vertical since gravity doing work Only small amounts chain fed time avoid bunching technique usually eliminates need paper guide tubes long connectors wrapped avoid unwanted disconnects simple idea works really well Give try dont like can use chain keep track hobby knife C 0S32 SX 0S46 SF OS46SX0546FX 0546 FX 0S46 VF 0S46 EX-H 0546 VR 0561 RFN-H0S61 RFN-H 0S61 SFN-H0561 SEN-H 0S61 SX 0S61 Hanno SpI 0S61 RX 0S91 VRDF 0561 SXWC 0S108 FSR 0S65 VRM Y546 FR 0S65 VRDF Y545 ES 0S91 VRDE 0S14D RX Y561 ST-H 124 Model Aviation Nationals Winner Bill Hemple Edge 540 1st Place MAC Nationals Unlimited Division end 1st Mace Free Stle Event Edoe 540 also place 4th MAC Nationals three oat of tea 1997 Masters Tournament Also Available 33% Laser 200120 Extra 300 40% G20237% 300L 25% Edge 5401/4 Scale Extra 120 Ultimate Profile Nimdniilt Manakete Covered Hand Painted Fiherlass Parts S35l 121 Sine Extra 300 120 Size Ihimate 1z nioai IA Uflit U Aurora Al UU13 Ph 1303 367-9792 755-5826 worRsFax 303-306-1141 WORLD CLASS AIRCRAFT~ True Chrome Will Peel Custom Porting High Performance Pistons/Cylinders V Timing Options Available Some Versions Factory Installation Available Send $3 00 1998 Catalog Dealer Inquiries Welcome PERFORMANCE SPECIALTIES P 0 Box 3146 nerville NV 89410 e 702-265-7523 702-265-7522 E-mail perfspec@acinet
