NASA-LLIS-0108
Lessons Learned - Gaseous Helium Injection During Slow LOX Fill
active, Most Current
| Organization: | NASA |
| Publication Date: | 20 August 1992 |
| Status: | active |
| Page Count: | 2 |
scope:
Description of Driving Event:
The helium injection system introduces a controlled flow of helium into the aft end of the feedline to prevent geysers during propellant loading and holds before launch. The helium is supplied from panel S72-0697-08 through one series valve (A78410) and two parallel valves. Failure of the series valve or clogging of the downstream filter could cause loss of bubbling. Loss of helium bubbling prior to 2% full or after 98% full in the external tank (ET) could result in damage due to geysering.
Document History
NASA-LLIS-0108
August 20, 1992
Lessons Learned - Gaseous Helium Injection During Slow LOX Fill
Description of Driving Event:
The helium injection system introduces a controlled flow of helium into the aft end of the feedline to prevent geysers during propellant loading and holds before...
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