File:SCA approach.ogv
SCA_approach.ogv (Ogg Theora video file, length 37 s, 640 × 480 pixels, 1.72 Mbps, file size: 7.57 MB)
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[edit]DescriptionSCA approach.ogv |
This 37 second movie clip shows the 747 Shuttle Carrier Aircraft (SCA) approaching Space Shuttle Endeavour suspended in the Mate-Demate Device (MDD). NASA uses two modified Boeing 747 jetliners, originally manufactured for commercial use, as Space Shuttle Carrier Aircraft (SCA). One is a 747-100 model, while the other is designated a 747-100SR (short range). The two aircraft are identical in appearance and in their performance as Shuttle Carrier Aircraft. The 747 series of aircraft are four-engine intercontinental-range swept-wing "jumbo jets" that entered commercial service in 1969. The SCAs are used to ferry space shuttle orbiters from landing sites back to the launch complex at the Kennedy Space Center, and also to and from other locations too distant for the orbiters to be delivered by ground transportation. The orbiters are placed atop the SCAs by Mate-Demate Devices, large gantry-like structures which hoist the orbiters off the ground for post-flight servicing, and then mate them with the SCAs for ferry flights. Features which distinguish the two SCAs from standard 747 jetliners are: -Three struts, with associated interior structural strengthening, protruding from the top of the fuselage (two aft, one forward) on which the orbiter is attached -Two additional vertical stabilizers, one on each end of the standard horizontal stabilizer, to enhance directional stability -Removal of all interior furnishings and equipment aft of the forward No. 1 doors Instrumentation used by SCA flight crews and engineers to monitor orbiter electrical loads during the ferry flights and also during pre- and post-ferry flight operations. The two SCAs are under the operational control of NASA's Johnson Space Center, Houston, Tex. NASA 905NASA 905 was the first SCA. It was obtained from American Airlines in 1974. Shortly after it was accepted by NASA it was flown in a series of wake vortex research flights at the Dryden Flight Research Center in a study to seek ways of reducing turbulence produced by large aircraft. Pilots flying as much as several miles behind large aircraft have encountered wake turbulence that have caused control problems. The NASA study helped the Federal Aviation Administration modify flight procedures for commercial aircraft during airport approaches and departures. Following the wake vortex studies, NASA 905 was modified by Boeing to its present SCA configuration and the aircraft was returned to Dryden for its role in the 1977 Space Shuttle Approach and Landing Tests (ALT). This series of eight captive and five free flights with the orbiter prototype Enterprise, in addition to ground taxi tests, validated the aircraft's performance as an SCA, in addition to verifying the glide and landing characteristics of the orbiter configuration -- paving the way for orbital flights. A flight crew escape system, consisting of an exit tunnel extending from the flight deck to a hatch in the bottom of the fuselage, was installed during the modifications. The system also included a pyrotechnic system to activate the hatch release and cabin window release mechanisms. The flight crew escape system was removed from the NASA 905 following the successful completion of the ALT program. NASA 905 was the only SCA used by the space shuttle program until November 1990, when NASA 911 was delivered as an SCA. Along with ferrying Enterprise and the flight-rated orbiters between the launch and landing sites and other locations, NASA 905 also ferried Enterprise to Europe for display in England and at the Paris Air Show. NASA 911 |
Date | |
Source | http://www.dfrc.nasa.gov/Gallery/Movie/747_SCA/HTML/EM-0064-03.html |
Author | NASA |
This file was selected as the media of the day for 18 January 2010. It was captioned as follows:
English: A 747 Shuttle Carrier Aircraft approaching Space Shuttle Endeavour suspended in the Mate-Demate Device
Other languages
English: A 747 Shuttle Carrier Aircraft approaching Space Shuttle Endeavour suspended in the Mate-Demate Device Македонски: Шатлски носач 747 му приоѓа на спејс шатлот „Индевор“ закачен во направа за прикачување Nederlands: Een Boeing 747-Shuttledrager nadert de Space Shuttle Endeavour, die zich bevindt in de Mate-Demate Device
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Licensing
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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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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:31, 30 April 2005 | 37 s, 640 × 480 (7.57 MB) | Brian0918 (talk | contribs) | This 37 second movie clip shows the 747 Shuttle Carrier Aircraft (SCA) approaching Space Shuttle Endeavour suspended in the Mate-Demate Device (MDD). NASA uses two modified Boeing 747 jetliners, originally manufactured for commercial use, as Space Shuttl |
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