Original:  A standard 6-inch rocket was bonded to an aluminum case , and the rocket nozzle was supported by a pusher plate, which would impart the acceleration thrust to the missile through the aluminum wall casing.
Revised:  A standard 6-inch rocket was bonded to an aluminum case , and the rocket nozzle was supported by a pusher plate, which would impart the missile's acceleration through the aluminum wall casing.
Edit intent: clarity