How does an aircraft take off?
Answer:
The shape of the airfoil in the airplane's wing is critical. First and most obviously, the curved upper surface uses Bernoulli's Principle to induce a pressure drop above the wing. This causes the air pressure to be higher beneath the wing, which has the effect of lifting the plane into the air.
Less well known is the importance of the sharp trailing edge of the wing. As the plane accelerates down the runway for takeoff, the airstream above the wing begins to travel at a different rate from the air beneath. The sharp trailing edge allows the wing to change cleanly into a flight configuration. If you were to remove the trailing flaps and ailerons from a plane, squaring off the back of the wings, not only would you have an uncontrollable plane (the ailerons are important!) but your plane would never even leave the ground.
The shape of the wing causes air to take longer to travel over the wing top surface than it does to travel under it, generating a low pressure area at the top of the wing as the whole thing moves forward thru the air.
the aerodynamic wing of the aircraft based on Bernoulli's Principle creates a low pressure on the top and a high pressure on the bottom creating the lift.
this is aided by the engines that take in air, super heat it and compress the hot air and release it to power the aircraft to move forward.
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