A propulsion system consists of a source of mechanical power, and a propulsor (means of converting this power into propulsive force). Plucking a guitar...

used to power a fuel cell to generate electricity to power an electric propulsor. It cannot be stored in a traditional wet wing, and hydrogen tanks have...

submarines—such as the British Vanguard class—began to be fitted with pump-jet propulsors instead of propellers. Though these are heavier, more expensive, and less...

upgrade of historic touristic tramways used at the grottes de Han. Hybrid Marine propulsors. SA, Green Propulsion Engineering. "Propel yourselfinto tomorrow's...