File:Bell XV-15 tiltrotor ship 1 and 2 parked on NASA Dryden ramp (EC81-15431).jpg
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[edit]DescriptionBell XV-15 tiltrotor ship 1 and 2 parked on NASA Dryden ramp (EC81-15431).jpg |
English: The XV-15 tilt rotor ships #1 and #2 parked on the NASA Dryden Flight Research Center ramp. The XV-15s, manufactured by Bell, were involved in limited research at Dryden in 1980 and 1981. The development of the XV-15 Tiltrotor research aircraft was initiated in 1973 with joint Army/NASA funding as a "proof of concept", or "technology demonstrator" program, with two aircraft being built by Bell Helicopter Textron (BHT) in 1977. The aircraft are powered by twin Lycoming T-53 turboshaft engines that are connected by a cross-shaft and drive three-bladed, 25 ft diameter metal rotors (the size extensively tested in a wind tunnel). The engines and main transmissions are located in wingtip nacelles to minimize the operational loads on the cross-shaft system and, with the rotors, tilt as a single unit. For takeoff, the proprotors and their engines are used in the straight-up position where the thrust is directed downward. The XV-15 then climbs vertically into the air like a helicopter. In this VTOL mode, the vehicle can lift off and hover for approximately one hour. Once off the ground, the XV-15 has the ability to fly in one of two different modes. It can fly as a helicopter, in the partially converted airplane mode. The XV-15 can also then convert from the helicopter mode to the airplane mode. This is accomplished by continuous rotation of the proprotors from the helicopter rotor position to the conventional airplane propeller position. During the ten to fifteen second conversion period, the aircraft speed increases and lift is transferred from the rotors to the wing. To land, the proprotors are rotated up to the helicopter rotor position and flown as a helicopter to a vertical landing. |
Date | Taken on 3 April 1981 |
Source | https://images.nasa.gov/details-EC81-15431 (image link) |
Author | NASA |
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This image or video was catalogued by Armstrong Flight Research Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: EC81-15431. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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current | 04:23, 23 December 2021 | ![]() | 3,039 × 2,400 (8.78 MB) | Huntster (talk | contribs) | == {{int:filedesc}} == {{Information |Description={{en|1=The XV-15 tilt rotor ships #1 and #2 parked on the NASA Dryden Flight Research Center ramp. The XV-15s, manufactured by Bell, were involved in limited research at Dryden in 1980 and 1981. The development of the XV-15 Tiltrotor research aircraft was initiated in 1973 with joint Army/NASA funding as a "proof of concept", or "technology demonstrator" program, with two aircraft being built by Bell Helicopter Textron (BHT) in 1977. The aircr... |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title |
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Author | NASA |
Copyright holder |
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Headline | XV-15 tilt rotor ship #1 and #2 parked on NASA ramp |
Date and time of data generation | 3 April 1981 |
City shown | Edwards |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CC 2017 (Windows) |
File change date and time | 06:38, 11 July 2017 |
Color space | Uncalibrated |
Copyright status | Copyright status not set |
Date metadata was last modified | 23:38, 10 July 2017 |
Date and time of digitizing | 02:43, 4 March 2009 |
Unique ID of original document | xmp.did:accb6b6c-1fcc-1148-b75e-89eefc5309c3 |
Keywords | XV-15 Tilt Rotor Aircraft |
Province or state shown | CA |
Country shown | USA |
Sublocation of city shown | AFRC |
IIM version | 4 |