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Friday, 3 October 2014

Sikorsky S-97 helicopter shoots for speed with unusual design

The Sikorsky S-97 Raider has an unusual configuration, with two coaxial main rotors on top and a pusher propeller in the rear. It's not every day you see a helicopter that looks like this. But that unconventional rotor placement will help drive the S-97's exceptional speed.>








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