tip jets

jet rotor

jet rotor
A helicopter rotor driven by jet engines mounted on the blades. Also called tip jets.
References in periodicals archive ?
Tip jets travel east from the tip of Greenland towards Iceland, at speeds of 30 to 40 metres per second.
Now known as reverse tip jets, these also force circulation of water over the Labrador Sea to the west of Greenland.
It is similar to a gyroplane in that, after takeoff, it flies in autorotation (non-powered rotor) with the tip jets turned off, using an engine driven propeller for thrust (like airplanes and gyroplanes).