NASA-LLIS-0004
Lessons Learned - Flight Hardware Damage (Tires) due to Ground Test System Operational Conditions Outside of Design Limits
active, Most Current
| Organization: | NASA |
| Publication Date: | 19 April 1991 |
| Status: | active |
| Page Count: | 2 |
scope:
Description of Driving Event:
On November 21, 1989 two shuttle orbiter tires skidded sufficiently to cause blowouts following the application of brakes during a ground test at Wright Patterson Air Force Base. The skidding was caused by the brakes locking due to the failure of the anti-skid system. This failure was due to the use of non-flight switching valves as part of the test stand. Additional damage occurred to a hydraulic hose and quick disconnect fitting. An investigation also discovered an error in the abort software and the addition of excessively restrictive non-flight orifices in the brake hydralic lines. All of these findings contributed to the failure.
Document History
NASA-LLIS-0004
April 19, 1991
Lessons Learned - Flight Hardware Damage (Tires) due to Ground Test System Operational Conditions Outside of Design Limits
Description of Driving Event:
On November 21, 1989 two shuttle orbiter tires skidded sufficiently to cause blowouts following the application of brakes during a ground test at Wright Patterson Air...
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