Bernoulli's Principle is a principle of fluid dynamics that states that for an inviscid flow of a fluid, the total pressure throughout a streamline is constant. It was developed by the Swiss scientist Daniel Bernoulli in the 18th century. This principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
In aviation, the Bernoulli Principle is used to explain lift. According to the Bernoulli Principle, when air moves faster over the top of an object such as an airplane wing, it creates a lower air pressure than the air underneath the object. This in turn causes a net lift force on the object, allowing the plane to take off and fly. The Bernoulli Principle can also explain why the plane has to maintain a certain speed for takeoff and landing, as the air pressure needs to be balanced over the top and bottom of the wings for this effect to happen.
Lift is a concept used in aerodynamics and aeronautics which describes an aircraft’s ability to generate an upward force as it moves through the air. This force is produced by the wing of the aircraft, which creates a difference in pressure between the top and bottom of the wing due to their different angles. The pressure difference causes the air to flow faster over the top of the wing, resulting in a higher air pressure above the wing and consequently, an upward lift.