NASA-LLIS-0962
Lessons Learned – Space Shuttle Main Engine (SSME): Computer Models of Transient Performance
active, Most Current
| Organization: | NASA |
| Publication Date: | 15 May 1995 |
| Status: | active |
| Page Count: | 2 |
scope:
Description of Driving Event:
Fuel or oxidizer starvation will cause hazardous conditions due to off-nominal mixture ratios in liquid propellant rocket engines. A safe and repeatable start sequence was developed by making maximum use of the engine mounted computer to control propellant valve positions. The report stated that "Without the precise timing and positioning (of valves) allowed by the Main Engine controller (MEC), it is doubtful that a satisfactory start could have been deve.
Document History
NASA-LLIS-0962
May 15, 1995
Lessons Learned – Space Shuttle Main Engine (SSME): Computer Models of Transient Performance
Description of Driving Event:
Fuel or oxidizer starvation will cause hazardous conditions due to off-nominal mixture ratios in liquid propellant rocket engines. A safe and repeatable start sequence...
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