Clockwise Rotating Helicopter Differences
Oct 28, 2018Clockwise Rotating Helicopter Differences
With some members learning in the Guimbal Cabri G2 helicopter and others owning the experimental Rotorway helicopter, we decided to add this lesson.
In this video, we discuss the differences you will experience with torque and gyroscopic precession, when flying a clockwise turning main rotor system.
In reality, adapting to the differences will come quite natural to a somewhat experienced pilot. It is more challenging to explain the differences, than it is to jump seats and fly the opposite rotating system.
Most training helicopters, until recently, have been counterclockwise systems. Example: Robinson, Enstrom, & Schweizer.
The newest training helicopter and some experimental ones are clockwise systems.
Example: Guimbal Cabri and Rotorway.
Gyroscopic Precession
Note that gyroscopic precession will be opposite In Clockwise rotating helicopters.
For this reason, you will notice a difference in the following aerodynamics.
Transverse Flow Effect will cause the helicopter to drift left at approximately 10 knots, instead of right.
This is due to the front of the rotor system becoming clean and this increased lift is felt 90 degrees later in the plane of rotation (right side). To avoid drift on take off, the pilot adds a little right cyclic at this point.
Another thing that the opposite rotation will affect is Retreating Blade Stall. The helicopter will pitch up and lean to the right (retreating side), due to the lack of lift occurring on the right side (retreating side), and the lack of lift is felt 90 degrees later (on the rear of the disk). Recovery is the same, lower collective some and slow down.
Torque
Second thing to consider is the torque. Torque and Anti-torque are opposite in a clockwise rotating helicopter.
For this reason, you will notice the following differences in aircraft characteristics.
The tail rotor will be on the right side, and thrusting to the left. The aircraft will want to spin left due to main rotor torque, and the tail rotor is countering that with thrust in the opposite direction. This makes the right pedal the “power or increased pitch pedal”.
Any loss of tail rotor function will cause the helicopter to yaw left. An engine or transmission failure will cause the helicopter to yaw right.
There are several things to talk about with this change.
When you reach ETL on take off, you will need less right pedal to maintain heading.
So combine the difference in gyroscopic precession and torque, and you will note that the pilot will add some right cyclic as the helicopter hits 10 knots and left pedal at 16-24 knots in order to maintain track and heading during take off.
One example of a loss of tail rotor function would be total failure. Another is LTE (loss of tail rotor effectiveness).
LTE (loss of tail rotor effectiveness)
Fast left pedal turns becomes the concern for (LTE). Two of the “dangerous winds” for LTE will be different in a clockwise rotating system.
The tailwind remains the same, although a front right quartering wind becomes dangerous due to main rotor disk interference. A right 90 degree crosswind becomes dangerous, due to the danger of tail rotor vortex ring state.
Translating Tendency
Translating tendency will be opposite in a clockwise rotating system. The clockwise system will drift left in a hover, due to the tail rotor thrusting in that direction. This is corrected by pilot input on the cyclic or rigging of the mast.
Low G
Low G characteristics in the clockwise rotating system will be slightly different due to tail rotor thrusting in the opposite direction. After feeling light in the seat due to a push over or turbulence, the helicopter will roll to the left due to tail rotor thrust.
The recovery is the same! Gentle aft cyclic to reload the main rotor system, before correcting for the roll!
Categories
All Categories #204 #233 #234 #256 #257 #258 #259 #260 #261 #263 #264 #265 #266 #267 #268 #269 #270 #271 #272 #273 #275 #276 #277 #278 #279 #280 #281 #282 #283 #284 #285 #286 #287 #288 #289 #290 #291 #292 #293 #294 #295 #296 #55 #59 #60 #79 #90 #certifiedflightinstructor #commercialpilot #finalapproachcourse #helicoptergroundschool #helicopterhoverauto #helicopterhovering #privatepilot #learningtohover #helicopteronlinegroundschool #helicopteronlinegroundschool #helicopterpilot #helicoptertraining #hogs #hoverauto #hoverautomistakes #hoveringautorotation #kennykeller #privatepilot #r44 #rating #robinsonr44 #vip 10 101 12 year sale 180 autorotation 180 degree turn 200 pilot hours 2018 flight instructor of the year 2019 heli expo 3rd class medical 40 hours 91.119 91.17 accident acs add on add on pilot reactions aeronautical afi aft cyclic aircraft aircraft accidents aircraft checks airline pilot to helicopter pilot airport ramp airspace airspace lessons airwork las vegas amazing helicopter pilots anniversary approach autoroations autorotation autorotation overspeeds autorotations aviation weather aviation weather tools behind the scenes bell 47 bell jet ranger block time blueprint bonus book button buy a helicopter cabri cabri g2 cabri helicopter california california choppers california highway patrol canadian helicopter pilot training certified flight instructor cfi cfi time cfi training cfii check check ride check ride passed check ride prep check ride preparation check ride study guide check ride success check ride tips checklist checkride checks class g vs class d clearing turns closed runway coffee with kenny coffeewithkenny cold weather flying collective angle collective control college degree commercial commercial check ride commercial helicopter pilot commercial pilot commercial pilot requirements copy cost of flying helicopters course crasg cross country cross country helicopter flight cyclic hovering cyclic speed cyclic trim dan "taz" christman danger day day 249 day 250 day 252 day 253 day 254 day 255 day 4 deal decision designated doors doors off flying down dpe dynamic rollover ems ems helicopter jobs ems pilot ems pilots endorsements engine failure enstrom enstrom helicopter enstrom helicopter transition enstrom helicopters enstrom transition etl effective translational lift lesson examiner exclusive experience experimental helicopters eye exam eye test faa faa medical certificate exam faa safety faa wings faa wings credit faa written test fac fatal accident fatal helicopter accidents fatal helicopter crash fear of failure female pilot final final approach course first first class medical first flight fixed wing fixed wing add on fixed wing before rotor? fixed wing or helicopter fixed wing time flight flight computers flight instruction flight instructor of the year recommendation flight school flight school scams flight schools flight simulators flight trainging flight training fly flying at night flying in indiana flying with passengers and cargo foi's foreflight foreflight on ipad foreign helicopter student foreign student helicopter training free free helicopter ground school frequency of flying full future pilots gear golden gate bridge gopro governor vs throttle ground ground resonance ground school on any computer or device ground school podcast guarding the collective guimbal guimbal cabri g2 guimbal cabri g2 training h.o.g.s. hai hangar hangar safety hazards headsets helcopter helcopter ground schools heli expo heli expo 2019 helicopter helicopter abnormal vibrations helicopter accident helicopter accident review helicopter accidents helicopter add on helicopter add on rating helicopter aerobatics helicopter altitude helicopter approach helicopter approach and landing helicopter careers helicopter cfi helicopter cfi pilot helicopter cfii helicopter cfii pilot helicopter check ride helicopter check ride prepare helicopter check ride test tips helicopter check ride tips helicopter checklist helicopter chip light helicopter collective helicopter confined area landings helicopter controls helicopter cost helicopter cross country helicopter dolly helicopter dolly monster helicopter dreams helicopter ems jobs helicopter ems pilot helicopter engine failure helicopter faq's helicopter fatal accidents helicopter ferry flights helicopter flight helicopter flight control helicopter flight controls helicopter flight instructor helicopter flight instructor of the year helicopter flight lessons helicopter flight over water helicopter flight prep helicopter flight school helicopter flight schools helicopter flight time helicopter flight time hours helicopter flight tips helicopter flight training helicopter flight training schools helicopter flight training' helicopter flying at night helicopter flying careeres helicopter fuel helicopter fuel amount helicopter fuel gauge helicopter go around's helicopter ground helicopter ground school helicopter ground schools helicopter handbook helicopter hangar helicopter hems pilot helicopter hours helicopter hovering helicopter icing helicopter instructing helicopter instructor helicopter instrument pilot helicopter instrument training helicopter insurance helicopter intro flights helicopter jobs helicopter knee board helicopter landing helicopter lesson helicopter lessons helicopter lift helicopter logging flight time helicopter maneuvers helicopter maximum performance take off helicopter mel and mmel helicopter motion sickness helicopter night vision goggles helicopter online flight schools helicopter online ground school helicopter online ground schools helicopter online school helicopter online training helicopter ownership helicopter pedals helicopter pilot helicopter pilot careers helicopter pilot education helicopter pilot flight risk assessment matrix helicopter pilot jobs helicopter pilot lessons helicopter pilot medication use helicopter pilot retirement helicopter pilot schools helicopter pilot training helicopter pilot weather decisions helicopter pilots helicopter pre flight helicopter preflight helicopter preheating helicopter private pilot helicopter private pilot cost helicopter radio call helicopter radio communications helicopter rating helicopter rental helicopter rides helicopter right pedal helicopter rotor blade safety helicopter running landing helicopter safety helicopter safety briefing helicopter safety procedures helicopter safety team helicopter safety tips helicopter schools helicopter seats helicopter set down helicopter set downs helicopter simulaters helicopter solo helicopter solo flight helicopter stuck pedal helicopter student helicopter student pilot helicopter student pilots helicopter students helicopter study notebook helicopter take off helicopter test flight helicopter throttle helicopter timer helicopter torque limits helicopter tour accidents helicopter tour business helicopter tours helicopter training helicopter training blueprint helicopter tree trimming helicopter trimming helicopter utility inspection pilot helicopter weather helicopter wire strikes helicopter written test helicopters heliport accident prevention - what you don't know can kill you! helmets high school graduate helicopter pilot hobbs time hogs hogs hangar hogs mobile app hogs vlog hogs wall of fame hour requirements hover hover pre take off checks hovering hovering autorotations hovering flight hovering with pedals how to become a helicopter pilot iimc imc inadvertent imc inadvertent imc fatal accident review indy 500 instructor instrument instrument helicopter pilot instrument helicopter rating instrument pilot instrument pilot online course instrument pilot rating insurance requirements introduction just breathe ken keller field kenny kenny keller kenny keller creator kneeboard kobe bryant lake tahoe landing landing in snow landings law enforcement pilot learn to fly license live training live training tuesday loss of tail rotor effectiveness loss of tail rotor thrust low g low rotor rpm lte lte loss of tail rotor effectiveness lesson main and tail rotors maneuvers maximum performance takeoff medical cerificate medical certifcate member support mesh michael waltrip money motivation national guard helicopter pilot new book new york city helicopter tour pilot night flight goggles no no go off offer one-on-one online online ground school online helicopter ground school online helicopter ground schools online helicopter school online helicopter schools online helicopter training overwhelm paperback part 141 part 141 flight school part 61 part 61 flight school part 91 pencil whipping perfect pinnacle pic pick pilot pilot failures pilot in command pilot jobs pilot motivation pilot passion pilot shortage poh police helicopters post flight checks pre pre-flight checks preflight preflight checklist pressure altitude private private check ride private pilot private pilot 101 private pilot hours private pilot requirements professional helicopter pilot professional pilot pts pumping collective quick stops r-22 r-22 transition r-44 r22 training r22 vs r44 r44 r66 radio communication radio communications raido calls remote pilot required helicopter ems hours retreating blade stall ride robinson robinson helicopter robinson helicopters robinson r-22 robinson r-22 preflight robinson r-44 robinson r22 roman atwood rotor tips rotors colliding saftey save school schools schweizer helicopters scud running september11 set settling with power sfar73 awareness training signed smile more llc solo solo flight start stirring the pot student student helicopter pilot student helicopter pilots student pilot student pilots study surprises tail rotor dangers tail rotor direction tail rotor failure tail rotor failures tail rotor malfunction tail rotor strikes tail rotor thrust take ten test testimonials the helicopter poscast throttle chop throttle chops tim tucker time tips top top ten check ride tips towered airports training training syllabus transition from r-22 turbine time turkey sandwich up updates vfr charts vfr in ifr vip vision vortex ring state vuichard recovery method weekend helicopter flying weight limitations written test prep yoda youtuber zeroStay connected with news and updates!
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sed sapien quam. Sed dapibus est id enim facilisis, at posuere turpis adipiscing. Quisque sit amet dui dui.