Exactly how does an aircraft stay up in the air?
Answers:
Don't believe all these high-tech people who want you to believe in some magical, invisible force that lifts airplanes up off the ground.
The correct answer to the question "What makes airplanes fly?" is MONEY! If you don't have money, and lots of it, you ain't gonna get that thing off the ground! If you don't believe me, ask anyone who owns an airplane.
It is by the physical miracles of "Lift": high air pressure under the wings and "drag": Low air pressure above the wings.
The aircrart has to be designed with a precise ratio of weight/size to ensure pressure is enough to keep it airborne.
this site will help you http://www.allstar.fiu.edu/aero/fltmidfl.
The thrust from the engines generates forward movement of the aircraft. In turn, due to the shape of the wings, the wind velcoity on the bottom of the wing goes faster than the wind on the top of the wing. This causes the pressure to be higher on the bottom of the wing resulting in a force in the upwards direction.
Given enough thrust ANYTHING can be made to fly.
Gary got it backwards, the air travels faster over the top of the wing generating low pressure above the wing whichlifts the wing and plane up.
How does a Glider fly then Gary T? They dont make any thrust.
The same volume of air has to move over the airfoil as well as under it. Due the Shape of the airfoil the air has to travel a greater distance over the top to reach the trailing edge at the same time as the air under the airfiol. Because of this incerased distance the air must travel faster. This faster moving air creates a low pressure area above the airfiol. Pressure always wants to move from High to Low. The greater the airspeed, the greather the pressure differential, the greater the lift.
Thrust is only used to overcome drag, not to create lift.
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