Maneuvering Engines for Space Shuttle Orbiter

The orbit maneuvering engines provide the propulsive thrust to increase or decrease the velocity of the space shuttle orbiter while in earth orbit. The design and operational philosophy of the shuttle vehicle and orbital maneuvering system are discussed along with the design characteristic and selection rational for the current baseline orbit maneuvering system. The need for long life and economic reusability are the new shuttle requirements which must be considered along with traditional factors such as performance, reliability, and weight. Critical development issues and potential alternate designs are also discussed.