The type of "push" most commonly of interest in aircraft are from reaction-based engines which create needed forward thrust to produce lift. The reaction that creates the thrust is implicit in the name "aircraft"; a common illustration would be the blade of a propeller pushing against air; the force of the reaction against the blade pulls on the aircraft by virtue of the fixed connection to the engine; the consequent motion of air across the lift surfaces (typically, wings) generate the lift. Other devices which create this reaction include jet engines, turboprops, rocket engines (rarely), and the like.
a propeller
a engine
It is the propeller.
propeller.
propeller
The propeller pushes or pulls the aircraft forward, once sufficient forward speed is attained the wing can produce lift and the aircraft flies.
A propeller is the object on the aircraft that rotates to produce thrust almost like a fan makes wind... it aims the wind behind it and pushes the aircraft forward
Lift keeps an aircraft up, thrust pushes it forward.
This is interesting: The engines produce forward thrust, which in turn makes the aircraft go forward. The wings are airfoil-shaped, so, when the aircraft moves forward they push air downward, which in turn pushes the aircraft upwards.
Aircraft fly based on the principal of lift. Lift is the force that pushes a plane up. A wing is curved, which means the air flowing over the top of the wing is moving slower than the air moving under the wing. This faster moving air pushes up on the wing and the plane, making it fly.
The propulsion system of an aircraft moves the air backward. Air in turn pushes the aircraft forward. This is based on the Third Law of Newton.
It works in the same way as a fan it pushes air due to the angle or pitch of the blades