Description: How It Works: Wave Energy, Ocean Energy - Wave Power Station, How Waves Could Power A Clean Energy Future, Wave Energy Converter Turns Waves Into Power, Ocean Wave Energy: Wave Power Station [Wells Turbine], 3D animation video of a wave power plant
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Propulsion is a means of creating force leading to movement . The term is derived from two Latin words: pro , meaning after or forward ; and pellere , meaning to drive . A propulsion system consists of a source of mechanical power, and a propulsor (means of converting this power into propulsive force).
A technological system uses an engine or motor as the power source, and wheels and axles , propellers , or a propulsive nozzle to generate the force. Components such as clutches or gearboxes may be needed to connect the motor to axles, wheels, or propellors.
Biological propulsion systems use an animal's muscles as the power source, and limbs such as wings , fins or legs as the propulsors.