I can see the loss of tail rotor rpm idea up to a point. What I can say from experience is that when I close a throttle on pilots in an american a/c, it yaws left until they compensate with right pedal. The main reason being too much left pedal being applied for the instantaneous torque requirement, along with slow spool up by the 'good' engine. I never let the Nr decay enough to see the yaw reverse, and I have seen 75% Nr both power off and OEI with no problems. In any case, I find it hard to believe that a type would be certificated with such obvious and dramatic side efects following a single engine failure. On top of that, if the Nr was so low to induce loss of TR control, would there really be enough momentum in the main rotors to drag the thing back out of the water into the hover? Anyone due a 365 OPC soon? if so ask to try and establish a hover following a rejected helipad T/O.
Anyway, rather them than me.
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Another day in paradise
[This message has been edited by 212man (edited 19 September 2000).]