PPRuNe Forums - View Single Post - Co-axial rotor systems... a couple of Qs
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Old 25th May 2008, 17:01
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Lt.Fubar
 
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I see somebody is getting prepared for DCS: Black Shark

BTW that autorotation presentation video. 120 kph IAS, was not Knots, but Kilometers per hour - as it is Russian design, and they use the metric system for everything. And with this "3g touchdown" performed, I would expect ground resonance very shortly.

For those that have no idea what video I'm talking about, here it is:
http://www.youtube.com/watch?v=YeCO9O_3me8

I understand that the two Ka-50 self-midairs were the result of excessive negative g at high airspeed. I was therefore wondering of there were any other areas of the envelope that would lead to self-midair.
Low G maneuvers and sharp, or prolonged yaw to the right may be also dangerous as anything making the lower rotor to cone. The Ka-50 maneuvering envelope might be similar to that of a Cobra. Not really a dogfighter Which is kinda funny to read in late 80's books about it, where they say it was designed to fight other helicopters... on the other hand the same authors claimed that F-117 was supersonic

Last edited by Lt.Fubar; 25th May 2008 at 17:16.
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