How do jets move forward, and how do jets work? What is the scientific basis?

Jet engines provide thrust, the force is reciprocal, and the air pushes the aircraft forward.

But if that's all there is to it, the plane can only glide on the ground, and thrust alone is not enough to get the plane flying. The key to the ability of an airplane to fly is the cross-sectional shape of the wing.

The profile of the wing resembles an elongated teardrop, and the upper edge is more curved than the lower one. According to the principle of aerodynamics, an air pressure difference will occur between the upper and lower surfaces of the wings, and the size of this pressure difference depends on the speed of the aircraft taxiing (that is, the speed at which the air flows through the upper and lower surfaces of the wings), and when this pressure difference is greater than the weight of the aircraft, the aircraft can float.

Which aspect do you want to know, is it the principle of airplanes or the principle of jets?

A jet is a type of aircraft that uses a jet engine as its power source. Relying on the gas produced by the jet engine to fly forward in a high-speed backward jet manner, the aircraft gets more thrust and flies faster. Due to the different principles of engine operation, jets need to be at altitudes between 10,000 and 15,000 meters for optimal propulsion efficiency.

In addition, most jetliners are equipped with pressurized cabins to accommodate the drop in air pressure during high-altitude flight, and pilots flying jet military aircraft are required to wear flight suits and flight masks with pressurization.

He has two working principlesThe first is Newton's law, which applies Newton's third law of reaction.

An air compressor is installed in the front of the engine, modern compressors are divided into 7-9 stages, the rotor of the compressor is filled with blades, after the engine starts, the compressor rotates to suck in the outside air, and the outside air enters the navigator, the gas concentration is getting higher and higher, and the pressure is also increasing. Then it goes into the combustion chamber, in the combustion chamber the electric jet ignition, the gas contains oxygen, expands when burned, the gas is ejected backwards, there is a turbine behind the combustion chamber, the turbine mounts the turbine, the turbine mounts the blades, the turbine mounts the turbine, the turbine mounts the blades, the turbine mounts the turbine, the turbine mounts the blades, the turbine mounts the turbine, the turbine mounts the blades, the turbine mounts the turbine, the turbine mounts the blades, the turbine mounts the turbines, the turbine mounts the turbines, the turbines mounts the turbines. Create a reaction force that causes the aircraft to fly forward.

The second is the burning of kerosene

Many people have the illusion that airplanes all burn gasoline. In fact, this is not the case, modern jets are fueled with kerosene. Unlike piston engines, jet engines do not work the same way, and their combustion process is not interrupted.

Once the oil ignition is on fire, the engine will stall until the oil breaks. Therefore, if the fuel is not required to have good evaporation performance, burning gasoline will be overkill. Not only that, but modern jets fly higher and faster, which poses a big problem:

Aircraft flying at high altitudes, the fuel is at low pressure due to the thin air and low air pressure. In this environment, if the gasoline is used as fuel, the gasoline in the tank and oil circuit will boil immediately, resulting in a large amount of oil vapor, blocking the oil circuit and causing an air lock. Due to the lack of access to fuel, the engine also stops in the air, which can lead to a serious plane crash.

In order to avoid "gas locks", jets can only use kerosene, which has a high boiling point and does not evaporate easily.

Moreover, kerosene has better lubrication than gasoline, and gasoline will make the lubrication performance of various engine parts worse, greatly shortening the life of the engine, so this is another reason why aircraft burn kerosene.

There are mainly two working principles: Bernoulli's theorem and the continuity theorem of fluids. The fuel engine mixes air and fuel, and the gas will be sprayed backwards after expansion, and the aircraft is subjected to two forces when flying, and the forward force is generated under the joint action of the upper and lower two forces, so that the aircraft can fly.

The working principle of this kind of aircraft is to use the combustion of fuel, the instantaneous gas to propel the aircraft, the scientific basis is that when the fuel burns instantaneously, a huge vapor will be generated, and then the pressure will be generated, so that the aircraft will fly.

The working principle is that there is a level of compression, and the pressure can be increased a lot, and finally through the exhaust ejection, there will also be some reaction force, because this is our invention, so there is a certain scientific basis.

The interaction between objects is reciprocal; The pressure is low at the location where the fluid flow velocity is large.

The continuity theorem of fluids: When a fluid flows continuously and steadily through a pipe of varying thicknesses, the mass of the fluid flowing into any surface and the mass of the fluid flowing out from the other section is equal at the same time, since no part of the fluid in the pipe can be interrupted or squeezed up.

The basic content of Bernoulli's theorem: when a fluid flows in a pipe, the pressure is small where the flow velocity is large, and the pressure is high where the flow velocity is small.

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The action of force is reciprocal ...