PPRuNe Forums - View Single Post - Robinson helicopters added to safety watchlist
Old 16th Nov 2016, 10:26
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FlimsyFan
 
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Originally Posted by chopjock
rotorfossil


I'm not sure that's a good idea. Do that at 80kts and you risk a negative G event! Surely better to flare a little as you gently lower the lever eh?
Rapidly lowering the lever does not cause a dangerous low G event. From a pilot input perspective, low G is only of concern when induced by a cyclic pushover.

Am very much in agreement about the flare though. Some interesting work done by Dick Sanford (I think) that concludes (IIRC) - time available in cruise to fully lower lever to prevent catastrophic RRPM decay is approx 1s. Time available with no lowering of collective, but with progressive flare - circa 3s.

Haven't checked my facts on that, but he puts forward a strong argument that the flare is even more important during the 'Oh ****' moment than lowering collective. BTW, relates to R22.
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