Piasecki X-49 SpeedHawk
Aircraft model
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The Piasecki X-49 "SpeedHawk" is an American four-bladed, twin-engined experimental high-speed compound helicopter developed by Piasecki Aircraft. Wikipedia
Top speed: 168 mph
Range: 439 mi
First flight: June 29, 2007
Number of seats: 2
Engine type: Turboshaft
Manufacturers: Sikorsky Aircraft and Piasecki Aircraft
Built by: Piasecki Aircraft (modifications and testing)