Its rocket motor burned out, and it began to fall back to earth.

The plant makes and tests rocket motors, but doesn't have enough new orders to keep going.

People often want to know what is the highest force a rocket motor makes.

They saw the rocket motors burn out, noted their direction, and there was little to be done but wait.

The smoke from the rocket motor didn't even come close to the aircraft.

Solid rocket motors also present a significant handling risk on the ground.

I shut off the rocket motor and stumbled out of the ship.

And there are still those scientists who say a new generation of solid rocket motor is needed.

Specific impulse is also used to describe how well model rocket motors work.

Without losing any time, she leaned forward ready to start up the rocket motors.