Sikorsky X-2 - future of helicopters?

#3
The Ruskies have been playing around with the contra rotating rotor concept for yonks. Hormones of the 70's & 80's and it's replacement the Helix.

This looks like a cross between the Osprey and the Soviet KA helicopters.
 

Cpt_Black

Lantern Swinger
#4
Possible stupid question, but how does it rotate in hover? The only way I can think of is one of the rotors slows down.
 
#5
Cpt_Black said:
Possible stupid question, but how does it rotate in hover? The only way I can think of is one of the rotors slows down.
I would assume the speed or drag of one set of rotors, (upper or lower), would be altered to affect the torque thereby inducing a rotational force.

However only a guess, maybe a techie will come along shortly and give us the actual method.
 

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