PPRuNe Forums - View Single Post - Sikorsky X2 coaxial heli developments.

22nd Feb 2010, 17:17

#575 (permalink)

Lt.Fubar

Join Date: Nov 2007

Location: Poland

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Dave, no wonder they didn't do it.. I see worm drive in there

Good in differentials, not good for efficiency, and in this case - flight safety. Without torque from the engine, it's a brake.

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