Wiktionary
n. A rocket engine especially a solid rocket or a hybrid rocket.
Usage examples of "rocket motor".
Concentrated mass means a smaller rocket motor, smaller tanks, smaller ship, less dead weight all around.
A fragment from the exploding rocket motor had drilled a hole the size of a beer can right through her left wing, missing a fuel tank by three inches.
The trouble is, test-firing a rocket motor isn't what you'd call inconspicuous, and we'd probably have a visit from the Lizards in short order.
He used his forward rocket motor to kill his velocity relative to the little asteroid on which Dome 27 had gone up, then guided the scooter into the dome's airlock with tiny, delicate bursts from his attitude jets.
He opened the rocket motor behind him gently, letting its thrust raise his speed to the highest his little craft could take at this altitude.
These drive a set of centrifugal pumps which force the main fuel into the rocket motor.
These were the electronic nerves of the great pumps that would force fuel into the rocket motor.
The rising SM-2 missile, its rocket motor still burning, homed in on the reflected signal, focusing, closing, seeing the source of the reflected energy that drew it as a moth to a flame, a kamikaze robot the size of a small car, going at nearly two thousand miles per hour, seeking an object going six times faster .