Slowed-rotor technology, an aviation concept developed and demonstrated by Carter Aviation Technologies, eliminates drag in a rotorcraft, allowing the aircraft .\r
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Carter Aviation Technologies An Aerospace Research & Development Company is a research and development company, pioneering new aviation concepts.\r
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Also: Able Flight Loss, A Very Polished C-47, WWII Vets Tardy Pilot Cert, Aerojet Rocketdyne Wants ULA, OK Storm, Carter Aviation, RAF Typhoons Blue Origin .\r
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Helicopter The Piasecki X-49 is a four-bladed, twin-engined, experimental compound helicopter under development by Piasecki Aircraft. The X-49A is based on .