PPRuNe Forums - View Single Post - G2 down in Switzerland - 15 June 2022
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Old 28th Jun 2022, 08:16
  #38 (permalink)  
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Join Date: Apr 2000
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I posted this on another thread
Like many fenstron equipped helicopters, the Cabri requires anticipation of the pedal requirement - in forward flight the fin is producing a lot of the anti-torque.

As you lose ETL, the fan has to work harder to replace that loss of fin-lift and so requires a great deal more power pedal.

Add in a crosswind where the aircraft wants to weathercock and it is quite easy to end up with undemanded yaw - not LTE - and often FULL right pedal is required to maintain or correct the heading.
fenestrons have a different thrust to pedal position curve - a conventional TR is almost linear in its thrust, a fenestron is more S shaped. Training and anticipation are required but the fenestron still works fine.
crab@SAAvn.co.uk is offline