How does an Aircraft Fly?

At Gracious Avatar CPL, PPL & ATPL aspirants coming for pilot training, in order to achieve well results in DGCA exams and clearing an interview, you must have basic knowledge of an aircraft.  Like the first question comes in everyone mind that how does an aircraft fly? So here, I will highlight the basic principle and laws behind it.

It is a combination of aerodynamics (how air moves around an object) and propulsion (thrust- forward motion). So how it works????Aerodynamics- It works on a Bernoulli’s principle which states that faster an air travels, lower the pressure it exerts. Aircraft achieve lift because of the design of the wing and cross section of a wing is known as “Aerofoil”. The speed of the air on the upper surface of the wing is greater than the lower surface, which exerts lesser pressure on the upper surface and higher pressure on the lower surface of the wing. As there is a pressure difference on the wing, generates the lift. The vertical movement of an airplane is due to the force of lift.In addition, the forward direction of pulling force is generated by an aircraft engine.

There are basically four forces acting on the aircraft: Lift, Thrust, Drag, and Weight.

Lift and thrust are overcoming two other aerodynamic forces which are known as drag and gravity. In order to produce lift, aircraft uses its wings and to generate thrust it relies on Jet engines/propeller engines.

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