Fortunately, they needed to put minimal energy into the impulse drive.

He flung a hand out to slam off the impulse drive.

Therefore, the ship's impulse drive had been called into service to provide much of the power requirements for the current operation.

Despite her best efforts, the ship's impulse drive had failed.

"There is a runabout moving toward our position with its impulse drive."

As for the impulse drive, the best I can give you is one-third power.

We have impulse drive and were able to move off to a safe distance.

Then give us every ounce of power you've got from the impulse drive.

He used impulse drive to move the ship in one direction.

"And we were about to explain impulse drive to him."