A propeller which is housed inside a duct to improve engine performance of aircraft.

A modified turbofan engine with the propeller outside the engine duct of an aircraft.

plural of fan base

A cooling fan in a personal computer

plural of alluvial fan

To spread out into the shape of a fan

An electric, oscillating fan supported by an adjustable height, tiltable head, detachable stand.

Describing a helicopter's shrouded tail rotor, essentially a ducted fan, intended to counteract the torque of the main rotor.

plural of fan belt

Alternative form of fanservice