Why do airplanes fly? Why do airplanes fly?

Generally, the charging ports on the plane are located near the seat, such as behind the seat in front of you, or under your own seat. The charging port of the aircraft is determined by the model of the aircraft. Some planes are only equipped with charging ports in first class, and some cheap or ** planes are not equipped with charging ports.

Where is the charging port of the aircraft seat**? According to the relevant regulations, the power bank is not allowed to charge electronic devices during the flight. For power banks with start switches, they should always be turned off during the flight.

The charging interface on the aircraft is determined by the aircraft model. When a third party makes a booking, the location of the charging port is usually mentioned in the model description. Some airlines only have charging ports in first class, and some low-cost airlines don't have charging ports.

Common charging sockets are the main unit and some medium-sized aircraft (such as China Southern Airlines 320neo).

The reason why the plane can fly into the sky is mainly because of the solution of the following three problems:

power problems in order for the aircraft to have sufficient flight speed;

lift issues to generate enough lift to hold the aircraft up;

Maneuvering problems to change the attitude of the aircraft as needed to enable the aircraft to rise, turn, descend, .......

To solve the first problem, it was the installation of engines that would allow the aircraft to move forward and reach sufficient speed;

To solve the second problem, there are wings or rotors (***). The majority of the aircraft's lift is generated by the wings: the air flows to the leading edge of the wing, divides into two streams, the upper and lower airflows, which flow along the upper and lower surfaces of the wing, respectively, and rejoin at the trailing edge of the wing and flow backwards.

The upper surface of the wing is more convex, the flow rate increases, and the pressure decreases. On the lower surface of the wing, the air flow is blocked, the flow rate slows down, and the pressure increases, so that the pressure difference between the upper and lower surfaces of the wing appears, and the sum of the pressure difference perpendicular to the relative direction of the air flow is the lift of the wing. In this way, the heavier-than-air aircraft overcomes the gravity of the aircraft with the help of the lift gained on the wings and is able to soar through the air.

In order to solve the third problem, there are control devices in the aircraft, including steering sticks, pedals, elevators, rudders and ailerons. With these devices, the pilot can maneuver the aircraft to rise, turn, descend, .......

The reason why airplanes can fly is mainly due to the speed generated by the engine and the lift generated by the wings, and there is a famous saying in the aviation industry: as long as the engine is good, the bricks can also fly. Rockets and missiles (some) can fly without wings, just by a powerful engine.

Since it is possible to fly without wings, why should an airplane be equipped with wings (hereafter by a special name: wings)? Mainly for fuel efficiency.

This is because if you install a large enough wing, a small engine can also produce a lot of lift, such as a human-powered aircraft, the continuous power emitted by people is generally about 100 watts, it is impossible to make the aircraft produce a higher speed, if you want to fly, the general wing area should be 100 square meters, that is, the wingspan is 33 meters, and the chord length is 3 meters. If the wingspan is 10 meters, the chord length is 10 meters, it may not be able to fly, this is because the wing produces lift at the same time but also produces resistance, the ratio of lift and drag is called the lift-to-drag ratio, which is an important parameter of the advantages and disadvantages of the wing. For example, the glider has no power and is dragged by a car or a winch to generate speed, and the wings are made narrow and long.

So, if you want to fly fast, use a big engine and small wings. If you want to save fuel, use a small engine and big wings. But the problem with small engines and big wings is:

Usually there are winds in the air, the wind speed is between 40 and 50 km h, if the plane is below this speed, if it encounters a headwind, it will never reach its destination. Therefore, the engine must not be too small, at least 30 hp (22 kW) or more, and the wingspan should be at least 5 meters (single-seater) or 8 meters (two-seater). Since the engine can be reduced with large wings, why not install wings on the rocket?

This is because the rocket is used to launch satellites, and it has to fly to the outside of the atmosphere, where there is no atmosphere, and the wings not only cannot produce lift, but are a burden, so rockets are generally not equipped with wings.

Summary. Airplanes fly into the sky on the principle of aerodynamics, the main of which are two fluid theorems: the continuity theorem and Bernoulli's theorem.

Most of the lift of the aircraft is generated by the wings, and the air flows to the leading edge of the wing, which is divided into two streams, upper and lower, which flow along the upper and lower surfaces of the wings respectively, and rejoin at the trailing edge of the wing and flow backwards. The upper surface of the wing is relatively convex and the flow tube is thinner, indicating that the flow rate is increased and the pressure is reduced. On the lower surface of the wing, the air flow is blocked, the flow tube becomes thicker, the flow velocity slows down, and the pressure increases.

As a result, there is a pressure difference between the upper and lower surfaces of the wing, and the sum of the pressure difference perpendicular to the direction of the relative airflow is the lift of the wing. With the help of the lift gained from the wings, the heavier-than-air aircraft overcomes its own gravity due to the Earth's gravity and soars into the blue sky.

Why do airplanes fly?

Hello dear, I'm glad to answer your questions, airplanes fly into the sky on the principle of aerodynamics.

Airplanes fly into the sky on the principle of aerodynamics, the main of which are two fluid theorems: the continuity theorem and Bernoulli's theorem. Most of the lift of the aircraft is generated by the wings, and the air flows to the leading edge of the wing, which is divided into two streams, upper and lower, which flow along the upper and lower surfaces of the wings respectively, and rejoin at the trailing edge of the wing and flow backwards.

The upper surface of the wing is relatively convex and the flow tube is thinner, indicating that the flow rate is increased and the pressure is reduced. On the lower surface of the wing, the air flow is blocked, the flow tube becomes thicker, the flow velocity slows down, and the pressure increases. As a result, there is a pressure difference between the upper and lower surfaces of the wing, and the sum of the pressure difference perpendicular to the direction of the relative airflow is the lift of the wing.

With the help of the lift gained from the wings, the heavier-than-air aircraft overcomes its own gravity due to the Earth's gravity and soars into the blue sky.