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Some do. A few high performance jet aircraft have a movable wing, called a "swing wing" At low speeds the wing is straight out, but at high speeds the wings fold back. A helicopter is an airplane- a "rotary wing" aircraft. The rotor is not a propeller, but wings that are moved through the air. The wings of regular aircraft also move some- they flex up and down as loads change.
The first aircraft to have wings was the Wright Flyer, the first aeroplane to fly in 1901.
All type of aircraft need wings. They are the parts that make an airplane fly. Without wings it is not even an aircraft.
If the airplane is not a lifting body and has no wings, there could be no lift to hold it aloft. Therefore, the only force acting on the aircraft in the vertical dimension is gravity, and so the airplane falls.
A helicopter is an aircraft without fixed wings. Helicopters can also be known as rotorcraft.
No, but the wings have little flaps that do to control the aircraft from going up and down. the wings do go up and down with the plane but otherwise, no.
If it didn't have wings, it'd be a rocket.
4
Aircraft with two wings are called biplanes.
A big one with wings
vertical loads, longitudinal loads and vertical loads
The web address of the Wings Of History Aircraft Museum is: http://www.wingsofhistory.org