File:Tiltrotor research aircraft hovering - GPN-2002-000192.jpg

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Description	English: The NASA-Army-Bell XV-15 tiltrotor research aircraft hovered (1976) and then demonstrated conversion and forward flight (1978) as the first tilting rotor vehicle to solve the problems of "prop whirl." Through tremendously difficult research, the tilt rotor aircraft was able to combine the advantages of vertical liftoff and landing capabilities, which are inherent to the traditional helicopter, with the forward speed and range of a fixed wing turboprop airplane. This research can eventually lead to providing the aviation transportation industry with the flexibility for high-speed, long-range flight, united with runway-independent operations, thereby significantly relieving airport congestion. The research success so far has directly led to the V-22 Osprey development. For more information, please see NASA History Monograph 17, The History of the XV-15 Tilt Rotor Research Aircraft:From Concept to Flight by Martin Maisel.
Date	1978
Source	Great Images in NASA: Home - info - pic
Author	NASA

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This image or video was catalogued by Great Images in NASA of the United States National Aeronautics and Space Administration (NASA) under Photo ID: GPN-2002-000192.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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current	23:26, 9 April 2009		903 × 668 (319 KB)	BotMultichillT (talk \| contribs)	{{Information \|Description={{en\|1=The NASA-Army-Bell XV-15 tiltrotor research aircraft hovered (1976) and then demonstrated conversion and forward flight (1978) as the first tilting rotor vehicle to solve the problems of "prop whirl." Through tremendously

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