propulsion

It is adopting technology—in rocket propulsion, composite construction, and aerodynamic refinements—already in use elsewhere.

These mostly focus on propulsion and transport, but 4M is a different concept.

It certainly cannot sail under its own power, as 80 percent of the electricity generated on board is used for propulsion.

It seemed to lie flush with the ground; there was no visible means of either support or propulsion.

They are about fifty feet long, fish-shaped, heavily armored and have some unknown method of propulsion.

No one talks of the liver secreting bile, or of the heart acting for the propulsion of the blood, by instinct.

Gauthier proposed to use that engine in the propulsion of paddle-wheels placed at the side of the vessel.

The screw was found to possess many advantages over the paddle-wheel as an instrument for ship-propulsion.