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Inside Sikorsky's Speed-Record-Breaking Helicopter Technology
Sikorsky's X2 double-rotor helicopter recently broke the airspeed record for a rotorcraft. Here's a look at how they did it.
Pusher Propeller
The pusher propeller in the tail of the X2 is not for stability, it's for speed. "This is a high-performance blade so the aircraft can go really, really fast," Kagdis says. Interestingly, most of the power goes to the pusher prop at high speeds, and very little goes to the main rotor.
"The key message here is that there is a marriage of technologies to the pilot, which allows us to do these four key performance parameters–the speed, the acoustics, the vibration and the lower
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