How does the plane fly? How do airplanes fly?

Anyone who has learned about flow rate should know it. The pressure is small where the flow velocity is large, and the upper side of the wing is convex, so that a strong flow velocity can be generated when the aircraft is flying, the pressure is reduced, and the lower part is smooth, so the pressure is greater than the above, and the upward support force on the wing will be formed, which is the lift, if the aircraft thrust is greater, the lift will be greater. Complete.

The design of an airplane is the same as that of a bird's wings, which is equivalent to towing it upwards.

The upper part of the wing is arched, the lower part is flat, and when a certain speed is reached, the air flow speed in the upper part will be faster than that below (because the distance is long, the time is the same, so the speed is faster). In physics, the pressure is low where the flow velocity is high, so there is a pressure difference between the upper and lower wings, and the strong air pressure in the lower part of the aircraft is used to hold the aircraft up. That's why the planes have to run in groups before taking off.

Helicopters are also a principle.

Turboprop is the use of its high-speed rotation, accelerate the air flow rate of the lower or rear of the blade, to make the aircraft fly, turbofans and jet aircraft are used, the air intake inhaled in the engine, after combustion, expand, so that the aircraft to obtain forward thrust, in addition, most of the fixed-wing aircraft is the use of high-speed flight of the aircraft, the air flow velocity of the upper wing surface is greater than the lower surface of the lower wing surface to reduce the pressure of the upper wing surface, so that the flight can obtain lift, so as to fly, *** is also the use of this reason, however, Its wings evolved into *** blades.

1. To know the principle of aircraft take-off, we must first know a basic principle in fluid mechanics: flow velocity is inversely proportional to pressure. That is, the faster the air moves, the less pressure the air will be, and vice versa.

We can do a famous simple experiment: take a piece of paper in each hand, hold it at a certain distance in front of your mouth, and blow gently in front of the two pieces of paper, and you will find that the two pieces of paper are not blown open by you, but by you.

Because the air between the two papers flows, the pressure becomes smaller, and the air on the outer side of the two papers does not flow, and the pressure increases relatively, and the paper is "pressed" by the air.

2. The principle of aircraft take-off: the wing structure of the aircraft is covered, and the shape of the upper and lower sides of the wing of the aircraft is different, the upper side should be more convex, and the lower side should be flat. When an airplane taxi, the wings move in the air, which is equivalent to the air flowing along the wings in terms of relative motion.

Since the shape of the upper and lower sides of the wing is different, the air on the upper side of the wing flows more distance than the air on the lower side (the curve is longer than the straight line) in the same amount of time, that is, the air on the upper side of the wing flows faster than the air on the lower side.

According to the principle of hydrodynamics, when the aircraft slides, the air pressure on the upper side of the wing is less than that on the lower side, which causes the aircraft to produce an upward buoyant force. When the plane taxied to a certain speed, this buoyancy reached a force sufficient to make the plane fly. So, the plane went into the sky.