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Photo of Main Engine Installation

Space Shuttle Main Engines (SSME) & Main Propulsion System (MPS)

View the NASA Human Space Flight web site and learn about Space Shuttle Main Engines. Read how they operate and all the different terms associated with them. Learn about their size, weight, and much more!

Explore the Space Transportation System NSTS 1988 News Reference Manual and read about the Main Propulsion System (MPS) and how it is essential for lift off. Learn about all of the other systems that assist the MPS, and how they work.

Visit the NASA Space Shuttle Main Engine web site and read all about the SSME by using a SSME clickable map.

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Page Last Revised: 03-May-2004
Curator: Berta Alfonso Berta.A.Alfonso@nasa.gov / NASA, XA-D1
A Service of the NASA/KSC External Relations and Business Development Directorate, Lisa A. Malone, Director