File:Dream Chaser - Atlas V wind tunnel model.jpg
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[edit]DescriptionDream Chaser - Atlas V wind tunnel model.jpg |
English: The Dream Chaser model with its Atlas V launch vehicle is undergoing final preparations at the Aerospace Composite Model Development Section's workshop for buffet tests at the Transonic Dynamics Tunnel at NASA Langley. The scale model is being tested as part of NASA's Commercial Crew Development program to regain the American capability to launch astronauts safely to the International Space Station. The lifting body reusable spacecraft would carry as many as seven astronauts to the space station. Sierra Nevada Space Systems is developing the craft under a Space Act Agreement with NASA.
With the help of hundreds of pressure transducers, engineers from Sierra Nevada Corporation, the United Launch Alliance and NASA Langley will look at the pressure fluctuations the model and launch vehicle stack experience during the critical ascent to orbit, especially at transonic speeds. Shock-waves form on launch vehicles as they approach the speed of sound and may result in regions of highly unsteady flow. Within these regions of the Dream Chaser and launch vehicle, the resulting buffet forces and high frequency acoustic noise must be clearly understood as part of the vehicle design process. Transonic wind-tunnel testing of large, highly instrumented scale models is the only method of determining the buffet environments of launch vehicles with complex shapes. |
Date | |
Source | http://www.nasa.gov/multimedia/imagegallery/image_feature-2243.html |
Author | Ron Beard |
Licensing
[edit]Public domainPublic domainfalsefalse |
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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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:49, 8 May 2012 | 4,288 × 2,848 (8.98 MB) | Craigboy (talk | contribs) |
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Orientation | Normal |
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Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS4 Windows |
File change date and time | 08:24, 7 May 2012 |
Color space | sRGB |
Image width | 4,288 px |
Image height | 2,848 px |
Date and time of digitizing | 04:16, 7 May 2012 |
Date metadata was last modified | 04:24, 7 May 2012 |
Unique ID of original document | xmp.did:586DE09A3F98E111810DAA8B4E7C8248 |
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