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Space Shuttle Main Engines (SSME). HistoryLessons Learned from Mercury-ApolloPump and Nozzle ConstructionFuel and Oxidizer CombinationsContract Awarded March 1972Rockwell Rocketdyne (F-1, J-2, etc)Parts Proven and Verified by J-2 Engine (Apollo)Light-Chill-Light AbilityMaterial Dependability
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1. Space Shuttle Main Engines(SSME)
ELDON TRIGGS
AERO 4730
SPACE MISSION DESIGN
2. Space Shuttle Main Engines(SSME) History
Lessons Learned from Mercury-Apollo
Pump and Nozzle Construction
Fuel and Oxidizer Combinations
Contract Awarded March 1972
Rockwell Rocketdyne (F-1, J-2, etc)
Parts Proven and Verified by J-2 Engine (Apollo)
Light-Chill-Light Ability
Material Dependability/Durability
Throttleability by Pressure Management
3. Space Shuttle Main Engines(SSME) History Continued:
The J-2 features:
Independently driven pumps for both liquid oxygen and liquid hydrogen
A gas generator to supply hot gas to two turbines running in series
Pneumatic and electrical control interlocks for valve control
Altitude restart capability
Propellant utilization system controls mixture ratio
4. Space Shuttle Main Engines(SSME)
5. Space Shuttle Main Engines(SSME)
6. Space Shuttle Main Engines(SSME) BLOCK II High Pressure Fuel Turbopump
Three stage centrifugal pump
Two stage hot gas turbine
36,200 RPM
7. Space Shuttle Main Engines(SSME)
8. Space Shuttle Main Engines(SSME) Purpose of Low Pressure Turbopumps is to prevent cavitation
Cavitation is the phenomenon where small cavities of partial vacuum form in fluid then rapidly collapse, producing a sharp sound
9. Space Shuttle Main Engines(SSME)
10. Space Shuttle Main Engines(SSME)
11. Space Shuttle Main Engines(SSME)
12. Space Shuttle Main Engines(SSME) Contingency Abort (During ascent)
13. Space Shuttle Main Engines(SSME) Return To Launch Site (RTLS)
Transoceanic Abort Landing (TAL)
14. Space Shuttle Main Engines(SSME) Abort Once Around
15. Space Shuttle Main Engines(SSME) Abort Once Around
16. Space Shuttle Main Engines(SSME) Abort To Orbit (STS-51F-Eng 3)
17. Space Shuttle Main Engines(SSME)
18. Space Shuttle Main Engines(SSME)
Questions?