Quad A 2011: Piasecki makes VTDP modifications for next phase of testing
Piasecki is looking to move ahead with the next phase of its flight testing on the X-49A Vectored Thrust Ducted Propeller Compound Helicopter Technology (VTDP) demonstrator, according to company officials.
Having proven to the US Army the modified Seahawk can reach 185 kts, Piasecki said the next phase of modifications would allow the aircraft to reach speeds of around 215 kts and boost the aircraft's payload by a further 1,800 lbs. The X-49 uses a ducted fan fitted to the end of the tail rotor pylon to provide forward thrust, but in the first phase of testing it was found to
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