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For example, the orbital maneuvering system pods and forward reaction control system, which provided on-orbit propulsion, were removed and sent to the White Sands Testing Facility for decontamination and removal of oxidizer fuel valves and hypergolic tanks.
The crew members activated and checked out the shuttle robotic arm Friday evening in preparation for a standard survey of Atlantis' Orbital Maneuvering System pods.
Gordon Fullerton ignited another set of engines, the Orbital Maneuvering System, burning off enogh fuel to save weight so that Challenger could reach an orbit that was still safe, though at a lower altitude.
The OME is a pressure-fed, regeneratively cooled, storable bi-propellant engine that is a technically advanced, increased performance version of Aerojet's flight-proven 6000-pound thrust space shuttle Orbital Maneuvering System Engine (OMS-E).
Aerojet manufactured the Orbital Maneuvering System (OMS) engines and the Reaction Control System (RCS) thrusters, each having flown on every shuttle mission since its launch inception in 1981, as well as gas generators supporting the Auxiliary Power Units.
The space agency also reported that Endeavour's left-hand orbital maneuvering system work was completed so efficiently that it was delivered 44 days ahead of schedule, with no major discrepancies.