What is Push-pull aircraft?
[[File:Cessna Skymaster O-2 3.jpg|thumb|'''Push-pull aircraft''''s [[Cessna 337|Cessna O-2]].]] A '''push-pull aircraft''' is a type of [[aircraft]] whose principle is a twin [[engine]]. The first engine is [[Propulsion tools|propulsion]]. The second is [[Tractive effort|tractive]]. The first push and the second pull. On the outside, these aircraft are noticeable by their two [[propeller]]s: one in front and one in back. {{Transport-stub}} [[Category:Aircraft]]