Orbiter/External Tank
Separation System
Overview When
the external tank separates from the orbiter, several components
act at once for a clean disconnect.
17-inch
Disconnect Mated pairs of disconnects contain valves that allow propellant
to flow until time for ET separation.
External
Tank Separation System
The external tank is separated from the orbiter at three structural
attach points.
Orbiter
Umbilical Doors
After external tank jettison, doors close the umbilical cavities.
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