X-38
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| NASA X-38 | ||
|---|---|---|
| Missing image Scaled_Composites_X-38.jpg | ||
| Description | ||
| Role | Crew Return Vehicle | |
| Crew | 0 | |
| First Flight | March 12, 1998 (dropped by B-52) | |
| V131 & V132 Aeroshell Manufacturer | Scaled Composites, Inc., Mojave, CA | |
| V201 Aeroshell Manufacturer & V131, V132, V131R & V201 Systems Integration | NASA, JSC, Houston, TX | |
| Dimensions | ||
| Length | 28 ft 6 in | 8.7 m |
| Wingspan | 14 ft 6 in | 4.4 m |
| Height | ft in | m |
| Wing area | ft² | m² |
| Weights | ||
| Empty | 16,000 lb | 7260 Kg |
| Performance | ||
| Maximum speed | 500 mph | 800 Km/h |
| Avionics | ||
| Avionics | ||
The X-38 was a program under leadership of NASA Johnson Space Center to build a series of incremental flight demonstrators for the proposed Crew Return Vehicle (CRV) for the International Space Station. The program also, in an unusual move for a X-plane, involved the European Space Agency and the German Space Agency DLR.
These vehicles were unpiloted lifting bodies. The flight models were:
- X-38 V-131
- X-38 V-132
- X-38 V-131R, which was the V-131 prototype reworked with a modified shell
- X-38 V-201, which was an orbital prototype to be launched by the Space Shuttle
- X-38 V-133 and V-202 were also foreseen at some point in the project but were never built.
The X-38 V-131 and V-132 shared the aerodynamic shape of the X-24A. It was patterned after a lifting-body shape first employed in the Air Force-NASA X-24 lifting-body project in the early to mid-1970s. This shape had to be enlarged for the Crew Return Vehicle needs (crew of seven astronauts) and redesigned, especially in the rear part, which became thicker.
The X-38 V-131R was designed at 80 percent of the size of a CRV, and featured the final redesigned shape. (Two later versions, V-133 and V-201, were planned at 100 percent of the CRV size.)
The X-38 V-201 orbital prototype was 80 percent complete, but never flown.
In tests the V-131, V-132 and V-131R were dropped by a B-52 from altitudes of up to 45,000 ft (13,700 m), gliding at near transonic speeds before deploying a drogue parachute to slow them to 60 mph (95 km/h). The later prototypes had their descent continue under a 7,500 ft² (700 m²) parafoil wing, the largest ever made.
Flight control was mostly autonomous, backed up by a ground-based pilot.
The X-38 project was cancelled on April 29, 2002 due to budget concerns.
However, a lifting body shape is considered for the Crew Exploration Vehicle and could be considered as an heritage from the X-38 project.
See Also
External link
- NASA Dryden X-38 Photo Collection (http://www.dfrc.nasa.gov/gallery/Photo/X-38/index.html)
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