Question: What types of engines are used on a hovercraft?
Hovercrafts use many different types of engines depending on the application. Human powered craft obviously use a person as the engine. Small remote control model and toy hovercrat us small hobby motor.
Most hovercraft use two engines. One is used to lift the craft and
the other engine is used for thrust. Some smaller craft use a single
engine for both lift and thrust.
One of the best engine types for most craft is the 2-stroke engine,
such as those made by rotax. 2-stroke snowmobile engines are also used.
Unfortunately these engines can be noisy and difficult to operate. They
typically run at much higher RPM so a reduction system is employed to
run the propellor of fan at a slower speed.
Larger homebuilt and some commercial hovercraft sometimes use small
automobile engines. Some engines used are the Subaru E81 and the Honda.