A service module (or equipment module) is a spacecraft compartment containing a variety of support systems used for spacecraft operations. Usually located in the uninhabited area of the spacecraft, the service module is jettisoned upon the completion of the mission, and usually burns up during atmospheric reentry. The service module is the equivalent to the spacecraft bus assembly on unmanned spacecraft.
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Famous quotes containing the word service:
“You had to face your ends when young
‘Twas wine or women, or some curse
But never made a poorer song
That you might have a heavier purse,
Nor gave loud service to a cause
That you might have a troop of friends.”
—William Butler Yeats (1865–1939)