NASA-LLIS-0497
Lessons Learned - Propulsion Valve Contamination Sources in Vendor Test Facilities (1995)
active, Most Current
| Organization: | NASA |
| Publication Date: | 13 March 1997 |
| Status: | active |
| Page Count: | 3 |
scope:
Abstract:
The Cassini/Mars Global Surveyor thruster high pressure latch valve was redesigned to use a Kel-F seal instead of Teflon. Because the harder plastic has less ability to seal around small particles, particulate contamination in the helium gas can cause random leakage. Use high purity helium for pressure testing and for flight consumables, and establish contamination control procedures.
Document History
NASA-LLIS-0497
March 13, 1997
Lessons Learned - Propulsion Valve Contamination Sources in Vendor Test Facilities (1995)
Abstract:
The Cassini/Mars Global Surveyor thruster high pressure latch valve was redesigned to use a Kel-F seal instead of Teflon. Because the harder plastic has less ability to seal around small...
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