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.
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.
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 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 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!
All Topics 180 autorotation 180 degree turn 200 pilot hours 3rd class medical 40 hours 91.119 acs add on add on pilot reactions afi aft cyclic airport ramp airspace airspace lessons amazing helicopter pilots approach autorotation autorotations aviation weather aviation weather tools behind the scenes bell jet ranger block time cabri helicopter california highway patrol canadian helicopter pilot training certified flight instructor cfi check ride check ride passed check ride prep check ride preparation check ride success clearing turns closed runway coffee with kenny coffeewithkenny cold weather flying collective angle collective control college degree commercial check ride commercial helicopter pilot commercial pilot commercial pilot requirements cross country cross country helicopter flight cyclic hovering cyclic speed daily video day 4 dolly monster doors off flying dynamic rollover ems ems helicopter jobs ems pilots endorsements engine failure enstrom enstrom helicopter enstrom helicopters etl effective translational lift lesson experimental helicopters eye exam eye test faa safety faa wings faa wings credit fear of failure female pilot first class medical first flight fixed wing add on fixed wing or helicopter flight instruction flight instructor of the year recommendation flight reviews flight school flight school scams flight schools flight simulators flight trainging flight training flying in high winds flying in indiana foreign student helicopter training free helicopter ground school frequency of flying future pilots governor vs throttle ground school on any computer or device ground school podcast guarding the collective guimbal hazards headsets heli expo 2019 helicopter accident helicopter accident review helicopter add on helicopter add on rating helicopter cfi helicopter check ride helicopter chip light helicopter confined area landings helicopter controls helicopter faq's helicopter ferry flights helicopter flight helicopter flight control helicopter flight controls helicopter flight instructor helicopter flight over water helicopter flight prep helicopter flight school helicopter flight tips helicopter flight training helicopter fuel gauge helicopter ground school helicopter gusting winds helicopter hems pilot helicopter hovering helicopter icing helicopter instructing helicopter instructor helicopter jobs helicopter knee board helicopter landing helicopter lesson helicopter maximum performance take off helicopter mel and mmel helicopter motion sickness helicopter online ground school helicopter ownership helicopter pedals helicopter pilot helicopter pilot jobs helicopter pilot weather decisions helicopter pilots helicopter practice test helicopter preheating helicopter radio call helicopter radio communications helicopter rating helicopter rides helicopter right pedal helicopter safety helicopter safety tips helicopter seats helicopter set down helicopter simulaters helicopter student helicopter students helicopter study notebook helicopter take off helicopter test flight helicopter timer helicopter tour accidents helicopter tour business helicopter training helicopter tree trimming helicopter utility inspection pilot helicopter weather helicopter written test helicopters heliport accident prevention - what you don't know can kill you! helmets hogs hogs hangar hogs vlog hogs wall of fame hour requirements hover hover pre take off checks hovering hovering autorotations hovering with pedals how to become a helicopter pilot iimc inadvertent imc fatal accident review instrument pilot instrument pilot online course insurance requirements introduction landing landing in snow landing on a dolly live training live training tuesday long helicopter flights loss of tail rotor effectiveness low g low rotor rpm lte lte loss of tail rotor effectiveness lesson medical cerificate medical certifcate member support michael waltrip online ground school part 141 flight school part 61 flight school pilot in command pilot jobs pilot motivation pilot passion pilot shortage pressure altitude private check ride private pilot private pilot requirements professional pilot pts quick stops r44 radio communication radio communications raido calls remote pilot retreating blade stall robinson robinson helicopter robinson helicopters robinson r-22 robinson r-44 rotary to airlines rotorway helicopter schweizer helicopters settling with power sfar73 awareness training solo student pilot student pilots tail rotor dangers tail rotor failures tail rotor strikes test testimonials thank you veterans i r-44 ferry flight i tim tucker top ten check ride tips towered airports training syllabus updates vfr charts vision vortex ring state vuichard recovery method weekend helicopter flying weight limitations written test prep