airscrew

The Fokkers late in 1915 had been fitted with guns which fired through the airscrew.

In all but a few types of machine the airscrew is now retained in the forward position.

The machine gun soon followed, but its use in tractor machines was impracticable on account of the danger of hitting the airscrew.

Verkan Vall read of a Fourth Level aviator, in his little airscrew-drive craft, sighting nine high-flying saucerlike objects.

On this scale he was successful with a machine driven by an airscrew and with a machine driven by the flapping of wings.