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Radio Control Helicopters

Author: P. Tradelius


Edition: Model Aviation - 1995/07
Page Numbers: 91, 92

RADIO CONTROL HELICOPTERS HELl RADIO FEATURES questions get asked lot especially airplane drivers What makes helicopter radio different airplane radio question really asked lot airplane helicopter radios now have radios specifically designed sailplanes cars boats Helicopter radios still distinct features really quite logical analyzing effect helicopter flight So lets take look some basic functions can expect see heli radio advanced radios providing varied control advanced flier Revolution Mixing Probably first basic function heli radio deals mixing tail rotor collective pitch changed law motion states action equal opposite reaction spinning main rotor system generates certain amount torque also tries make whole helicopter spin opposite direction tail rotor designed counter torque provide yaw control However also means collective pitch main rotor changed torque therefore corresponding change tail rotor example collective pitch increased climb resulting torque helicopter will increase corresponding need change tail rotor same process happens helicopter descends opposite direction coordination tail rotor change collective pitch lot work early days tail rotor compensation developed automatically add tail rotor TIR collective increased above mid-stick reduced T/R collective reduced below mid-stick feature takes quite workload off pilot helps tail follow nose during normal flight Idle-Up Changing collective pitch used normal flight also aerobatics drastically change lift rotor blades perform certain maneuvers heli feature throttle would go idle collective reduced low value would immediately reduce rotor speed therefore ability helicopter fly Idle-up prevents happening acting governor engine means engine allowed increase power throttle/collective TIC stick increased its higher limits T/C stick reduced low value engine remains high power setting provides both power rotor speed throughout phases aerobatic flight Throttle Hold Another throttle function similar idle-up just described drives throttle low setting no matter T/C stick may thereby allowing stick control collective pitch function especially useful doing autorotations simulate inflight engine failure helicopter must descended quickly preserve rotor speed use later flare landing Throttle hold also very useful during almost type inflight emergency engine failure loose failed tail rotor etc because immediately takes power torque off helicopter allowing safely landed minimum time Several years ago Richard Morris Mid-West Helicopter Association hovering inverted about three feet ground lost tail rotor blade Richard presence mind climb spinning helicopter safe altitude flip right side up use throttle hold function eliminate torque helicopter need tail rotor safely make autorotation landing July1995 91 Futaba Skysport JR XF 622 excellent entry-level radios provide basic functions Arise muffler solution small lightweight stock-muffler adapter reduce noise improve performance Larry Bergen holds new self-aligning clutch CNC highvolume fan 60-size X-Cell helicopters KSJ Universal Muffler Horizon Hobby Distributors has nice combination beauty performance durability damage whatsoever Great skill great presence mind emergency Pitch Curves performing individual maneuvers its great help able limit adjust amount collective pitch available helicopter performing normal aerobatics maximum 100 pitch about load engine can handle minimum 30 being about right middle roll Having ability set pitch range makes flying little easier settings would optimum autorotations would like have pitch touchdownsay about 140—and less pitch descents say about 5O Now problem becomes get both quite easily answered using different pitch curves maneuver basic heli radios offer pitch curve advanced heli radios offering pitch curves gives us ability vary pitch high low limits some radios intermediate points wellall finer control helicopter Trainer System helicopter close ground learn hover no time instructor take over should make mistake put helicopter dangerous position wide training gear comes handy prevent mishap once have mastered hovering ready try some forward flight its nice have instructor ready take over needed best way trainer system built transmitter buddy-box transmitter trainer switch enables connect second transmitter using long electrical cord available manufacturer can used buddy-box Computer radios make buddy-box especially easy use since functions presented digital readout can accurately copied second transmitter will have identical control instructor can engage spring-loaded trainer switch master transmitter give control helicopter student can quickly regain control simply releasing switch would like benefit such trainer system find suitable instructor has radio trainer feature get similar make model radio helicopter radios will compatible New Products Arise Inc 2678 Lower Concession Ormstown Quebec JOS lKO Canada has developed muffler solution convert stock muffler quiet free-flowing Simply take off cut off latter half stock muffler use mounting hardware install Arise its simple Although originally developed fixed-wing models Arise works just well helicopters using 900 exhaust adapter original muffler get parallel ground Bergen Machine & Tool 1101 Follett Drive Cassopolis MI 49031 has available new heavy duty gold-anodized ballbearing self-aligning clutch 60-size X Cells Now dont need use dial indicator true starter shaft eliminate vibration just bolt youre ready go new fan CNC machined trueness uses angled fins optimum airflow over engine Morethan-adequate cooling becoming increasingly important demand power engines aerobatic 3D flying summer Horizon Hobby Distributors 4105 Fieldstone Rd Champaign IL 61821 distributing new KSJ N-30 Universal Muffler 30 size engines photo just does muffler justiceit really work art completely CNC machined parts screwed togetherno welded parts break under vibration Because header screwed muffler body can rotated needed particular helicopter Im using Enforcer ZR OS 32 SX-H engine 30% fuel really like combination power idle reliability odel Aviation

Author: P. Tradelius


Edition: Model Aviation - 1995/07
Page Numbers: 91, 92

RADIO CONTROL HELICOPTERS HELl RADIO FEATURES questions get asked lot especially airplane drivers What makes helicopter radio different airplane radio question really asked lot airplane helicopter radios now have radios specifically designed sailplanes cars boats Helicopter radios still distinct features really quite logical analyzing effect helicopter flight So lets take look some basic functions can expect see heli radio advanced radios providing varied control advanced flier Revolution Mixing Probably first basic function heli radio deals mixing tail rotor collective pitch changed law motion states action equal opposite reaction spinning main rotor system generates certain amount torque also tries make whole helicopter spin opposite direction tail rotor designed counter torque provide yaw control However also means collective pitch main rotor changed torque therefore corresponding change tail rotor example collective pitch increased climb resulting torque helicopter will increase corresponding need change tail rotor same process happens helicopter descends opposite direction coordination tail rotor change collective pitch lot work early days tail rotor compensation developed automatically add tail rotor TIR collective increased above mid-stick reduced T/R collective reduced below mid-stick feature takes quite workload off pilot helps tail follow nose during normal flight Idle-Up Changing collective pitch used normal flight also aerobatics drastically change lift rotor blades perform certain maneuvers heli feature throttle would go idle collective reduced low value would immediately reduce rotor speed therefore ability helicopter fly Idle-up prevents happening acting governor engine means engine allowed increase power throttle/collective TIC stick increased its higher limits T/C stick reduced low value engine remains high power setting provides both power rotor speed throughout phases aerobatic flight Throttle Hold Another throttle function similar idle-up just described drives throttle low setting no matter T/C stick may thereby allowing stick control collective pitch function especially useful doing autorotations simulate inflight engine failure helicopter must descended quickly preserve rotor speed use later flare landing Throttle hold also very useful during almost type inflight emergency engine failure loose failed tail rotor etc because immediately takes power torque off helicopter allowing safely landed minimum time Several years ago Richard Morris Mid-West Helicopter Association hovering inverted about three feet ground lost tail rotor blade Richard presence mind climb spinning helicopter safe altitude flip right side up use throttle hold function eliminate torque helicopter need tail rotor safely make autorotation landing July1995 91 Futaba Skysport JR XF 622 excellent entry-level radios provide basic functions Arise muffler solution small lightweight stock-muffler adapter reduce noise improve performance Larry Bergen holds new self-aligning clutch CNC highvolume fan 60-size X-Cell helicopters KSJ Universal Muffler Horizon Hobby Distributors has nice combination beauty performance durability damage whatsoever Great skill great presence mind emergency Pitch Curves performing individual maneuvers its great help able limit adjust amount collective pitch available helicopter performing normal aerobatics maximum 100 pitch about load engine can handle minimum 30 being about right middle roll Having ability set pitch range makes flying little easier settings would optimum autorotations would like have pitch touchdownsay about 140—and less pitch descents say about 5O Now problem becomes get both quite easily answered using different pitch curves maneuver basic heli radios offer pitch curve advanced heli radios offering pitch curves gives us ability vary pitch high low limits some radios intermediate points wellall finer control helicopter Trainer System helicopter close ground learn hover no time instructor take over should make mistake put helicopter dangerous position wide training gear comes handy prevent mishap once have mastered hovering ready try some forward flight its nice have instructor ready take over needed best way trainer system built transmitter buddy-box transmitter trainer switch enables connect second transmitter using long electrical cord available manufacturer can used buddy-box Computer radios make buddy-box especially easy use since functions presented digital readout can accurately copied second transmitter will have identical control instructor can engage spring-loaded trainer switch master transmitter give control helicopter student can quickly regain control simply releasing switch would like benefit such trainer system find suitable instructor has radio trainer feature get similar make model radio helicopter radios will compatible New Products Arise Inc 2678 Lower Concession Ormstown Quebec JOS lKO Canada has developed muffler solution convert stock muffler quiet free-flowing Simply take off cut off latter half stock muffler use mounting hardware install Arise its simple Although originally developed fixed-wing models Arise works just well helicopters using 900 exhaust adapter original muffler get parallel ground Bergen Machine & Tool 1101 Follett Drive Cassopolis MI 49031 has available new heavy duty gold-anodized ballbearing self-aligning clutch 60-size X Cells Now dont need use dial indicator true starter shaft eliminate vibration just bolt youre ready go new fan CNC machined trueness uses angled fins optimum airflow over engine Morethan-adequate cooling becoming increasingly important demand power engines aerobatic 3D flying summer Horizon Hobby Distributors 4105 Fieldstone Rd Champaign IL 61821 distributing new KSJ N-30 Universal Muffler 30 size engines photo just does muffler justiceit really work art completely CNC machined parts screwed togetherno welded parts break under vibration Because header screwed muffler body can rotated needed particular helicopter Im using Enforcer ZR OS 32 SX-H engine 30% fuel really like combination power idle reliability odel Aviation

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