Examples from the Web for airscrew
(p. 103) A later difficulty caused by the forward position of the airscrew had nothing to do with flying.
On this scale he was successful with a machine driven by an airscrew and with a machine driven by the flapping of wings.
The motive power was supplied by twisted strands of rubber which, as they untwisted, turned the airscrew.
The machine gun soon followed, but its use in tractor machines was impracticable on account of the danger of hitting the airscrew.Aviation in Peace and War|Sir Frederick Hugh Sykes
A good illustration of this may be found in the question of the airscrew.