What is the principle of airplanes flying in the air?

The principles of fluid mechanics of fixed-wing aircraft are detailed upstairs. Rotorcraft make use of reaction forces.

The airplane relies on the wings to generate lift, so that the aircraft leaves the land and rises into the air, and after the aircraft lifts off, it relies on the aircraft engine.

The ejected air currents prompt the aircraft to fly through the air.

nbsp;An airplane is a type that is capable of flying in the skyTransportationI believe everyone knows, but why does the plane fly and not fall? What kind of power does it take to fly? Let's find out.

Details:

Air is not invisible, you can think of it as a stealth inflatable cushion, if you hit it lightly, you won't feel anything, but if you accelerate and run into it, it will be bounced back by the gas in the pad, this is the force that air produces on people.

Air energy. The forces provided should be viewed from a spatial point of view, including vertical lift, downforce, horizontal drag, and pull. If the plane wants to fly upward, the lift force must be greater than the downward force, so the wing has a certain elevation angle.

When the air passes, a small part of the air goes up, most of the air goes down, the air above is less, the flow rate is faster, and the air below is more, and the flow rate is slow like a traffic jam;

And in aerodynamics.

In the place where the flow rate is fast, the pressure is small, so the downward pressure above the wing is less than the lift under the wing, and the lift pushes up, and the aircraft will naturally fly, the range hood.

That's the same thing. With one more assist, the faster the aircraft, the greater the lift, and the higher the aircraft will fly.

Everyone knows that the streamlined design of the nose reduces the oncoming air resistance.

The tail has three parts, which are divided into vertical upward directional wings and left-right symmetrical lifting wings. Bottom line, none of them are fixed! There are steerable rudders on the tail fin, and when the aircraft is about to turn, the steering rudder has its own function to change the air force.

Frontal view of the aircraft, if the aircraft is going to turn left, the left elevator should be turned down, and the right elevator should be up, and the fuselage will tilt to the left. The rudder is to the right, the pressure on the right is less than on the left, the tail is pushed to the right, and the nose of the plane naturally turns to the left.

The same application is also when the plane lands, there will be a baffle above the wings to rise, many people think that the plane is broken, but they don't know that it is to reduce the upward flow of air and improve the lift so that the plane will not hit the ground hard, and there is also a part of the forward deceleration function.

1.The ability of an aircraft to fly into the sky is mainly due to the power generated by the engine and the lift generated through the wings.

2.The wing, its front end is semicircular, gradually thinning backward and pointed, the surface of the wing is smooth and uplifting, when the air flows above and below the wing, different flow rates are produced up and down the wing, the air flow rate above is fast, the pressure generated is small, the air flow rate below is slow, the pressure generated is large, therefore, the aircraft has an upward lift, and the thrust of the aircraft is greater and the speed is faster, and the upward lift is also greater.

3.The take-off and landing of the aircraft are carried out under the headwind, in the case of wind and no wind, the distance of the glide is not the same, the distance of the take-off and glide is shorter when the headwind is upwind, on the contrary, when there is no wind and downwind, the take-off and running distance will increase, in short, the higher and faster the plane flies, the greater the power required, and the more fuel is consumed.

The shape of the wing of the aircraft can make the flow velocity under the wing lower than the flow rate above, resulting in the pressure difference between the upper and lower wings, that is, the pressure below is stronger than the pressure above, so there is a lift, and this pressure difference is related to the forward speed of the aircraft.

The ascent of the aircraft is based on Bernoulli's principle, that is, the greater the flow velocity of the fluid, the smaller the pure strength of the press; The smaller the flow velocity, the greater the pressure.

The greater the speed at which the aircraft travels, the greater the pressure difference, i.e., the lift. Therefore, the plane must take off at a high speed so that the plane can take to the sky. When the plane needs to descend, as long as it reduces the speed of its forward, its lift will naturally become smaller, less than the weight of the aircraft, and it will descend and land.

In addition to the wings and engines, there are many other parts of the aircraft, such as landing gear, flaps, etc. These components are designed to make the aircraft more stable and safe to fly in the air.

The principle of flight of an airplane is based on Bernoulli's theorem and Newton's third law. Bernoulli's theorem states that when a fluid is flowing, its kinetic energy increases while its pressure decreases. Newton's third law states that any force applied to an object will have an equal reaction force.

In addition to the wings and engines, there are many other parts of the aircraft, such as landing gear, flaps, etc. These components are designed to make the aircraft more stable and safe to fly in the air.

The wing of an aircraft is a key component in achieving flight. The shape of the wing is an arc, with the upper surface slightly convex than the lower surface. When the plane is flying, the air above the wings will travel farther than the air below because of the bulge of the wings, so the air above will be faster than the air below.

According to Bernoulli's theorem, the faster the air pressure, the lesser the pressure, so the pressure above the wing is less than the pressure below. This creates an upward lift force that allows the aircraft to fly through the air. Rent Zheng.

The wing of an aircraft is a key component in achieving flight. The shape of the wing is an arc, with the upper surface slightly convex than the lower surface. When the plane is flying, the air above the wings will travel farther than the air below because of the bulge of the wings, so the air above will be faster than the air below.

According to Bernoulli's theorem, the faster the air pressure, the lesser the pressure, so the pressure above the wing is less than the pressure below. This creates an upward lift force that allows the aircraft to fly through the air.

In general, airplanes are able to fly in the air by Bernoulli's theorem and Newton's third law. It is through the interaction of wings and engines, as well as the synergy of other components, that aircraft can fly in the air and make it easier for people to get around.

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 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.

The generation of wing lift mainly depends on the action of the upper surface suction, rather than the effect of the positive pressure on the lower surface, the suction formed on the upper surface of the wing accounts for about 60-80% of the total lift, and the lift formed by the positive pressure on the lower surface only accounts for about 20-40% of the total lift.

According to the principle of continuity of air flow and Bernoulli's theorem, the pressure above the wing is smaller than the pressure under the wing, that is, the upward pressure on the lower surface of the wing is greater than the downward pressure on the upper surface of the wing, and this pressure difference is the lift generated by the wing.

The power plant of modern aircraft mainly includes turbine engine and piston engine, and there are four widely used power plants: aviation piston engine and propeller thruster; turbojet engines; turboprop engines; Turbofan engine.

With the development of aviation technology, rocket engines, ramjet engines, and atomic aero engines are also likely to be gradually adopted. In addition to the engine, the power unit also includes a series of systems to ensure the normal operation of the engine, such as fuel ** system.

When it comes to the power plant of the aircraft, we have to talk about the thrust-to-weight ratio of the aircraft. The thrust-to-weight ratio is the ratio of the thrust of the aircraft to the gravitational force experienced by the aircraft. The thrust of a general civil aircraft is less than the gravity of the aircraft, because every additional kn of thrust increases the manufacturing cost of the aircraft.

When the thrust of the aircraft is greater than the gravity of the aircraft, the aircraft can achieve high-speed climb or even vertical climb, and many aircraft that require high maneuverability, such as fighter jets, have great thrust and very little gravity.

It's aerodynamic, where the aircraft engine shoots gas backwards to get the reaction force to propel the plane forward, and the upper part of the wing is the arc, and the lower part is a straight line, causing the air density in the upper part of the wing to be less than the lower part, so that it gets an upward force against gravity, so it flies.

That's what planes take off.

According to the type of aircraft engine, there are propeller aircraft and jet aircraft. Propeller history aircraft, including piston propeller aircraft and turboprop aircraft, aircraft engines are piston propeller type, which is the most primitive form of power. It uses the rotation of the propeller to push the air towards the rear of the aircraft, and uses its reaction force to propel the aircraft forward.

The higher the propeller speed, the faster the flight speed. Jets, including Vortex Jets and Vortex Fan Jets. The advantages of this type of model are simple structure and fast speed, generally up to 500-600 miles per hour; The fuel cost is economical, the loading capacity is large, and it can generally carry 400-500 people or 100 tons of cargo.

Aren't the wings jet engined?

Large airliners are also jets, don't the wings have jet engines? It's just a different shape than a fighter jet.

You should know that the propeller airliner is the same as the propeller fighter.