Pusher configuration
（重定向自Pusher propeller）
![Wright Flyer 1903 Pusher.](/Images/godic/202502/05/First_flight23621.jpg")
![Top to bottom: 1870 helicopter;1871 'Planophore;1873 ornithopter.](/Images/godic/202502/05/Pénaud's_flying_models3621.jpg")
![Early photos of Wilbur Wright's, Glenn Curtiss' and Henri Farman's pusher biplanes.](/Images/godic/202502/05/PUsher_Biplanes3621.jpg")
![The First World War Royal Aircraft Factory F.E.2 with classic](/Images/godic/202502/05/Royal_Aircraft_Factory_FE2b_profile3621.jpg")
In a craft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). According to British aviation author Bill Gunston, a "pusher propeller" is one mounted behind the engine, so that the drive shaft is in compression.