Wiktionary
n. The blast of air created by an airplane propeller.
Usage examples of "prop blast".
Once he was there, and we knew it was safe to land, we were able to land another plane, load him into that, and with the pilot sitting on Ed's lap and ducking his head to get it out of the prop blast, he was able to make off and get Ed back to the base.
Rick shoved the nose of his plane down, wincing as the black biplane screamed by so close that the Cub was tossed around in its prop blast.
If the bigger plane got too close, its prop blast would throw the Cub into a spin.
The scream of helicopter blades drowned out voices, the gale-force prop blast scattered straw hats and precious satchels into the dark night, and flashing red under-lights and blinding spot beams disoriented the few lucky enough to have made it that far.
Pitt slid open the side window, stuck his head into the prop blast and looked back.
The wind, or the prop blast, caught him the wrong way and threw him into the horizontal stabilizer.
The three ran around the wing, bracing themselves against the prop blast.
Presumably the same technique would keep the prop blast from blowing this life raft away.
The door closed and the plane was whirling, catching them in its prop blast.
The stair to the rear door was lowered and Felter and an army nurse (of all things) in full uniform, her hair blown out of place by the prop blast of the idling engines, came up the stairs.
The prop blast flung him backward: The plane was going close to top speed, he realized, and felt brief anger.