What is the classification of aero engines?

In fact, there are many problems in the development of engines in China, which are systematic. It's not just a matter of just finding one person or a few people. I won't talk about it here.

In the beginning, when we developed the WP and WS engines, we used the engines as an adjunct to the aircraft, and later during the honeymoon period between China and the United States, we had the opportunity to come into contact with foreign experience in this area. Especially GE and others, at that time we found out that foreign engines took the road of core engines, and the engines were independent of the aircraft. Why?

Mainly due to the fact that the development of the engine took several years longer than the aircraft. You can imagine that if you develop together, or even the aircraft is developed before the engine, and then the plane comes out, and the engine is not ready to use? What will happen then?

It is likely that the state will outsource, so that the impact on the progress of a country's engine is huge, and it will be difficult to do when the time comes, and it will even lead to a nausea cycle! Since then, we have been working on the engine as a stand-alone and pre-developed engine. Of course, in addition to the above situation, there are also characteristics such as difficulty in the research and development of aero engines and large capital needs.

As for the mismatch you mentioned, this can actually be avoided, as long as you coordinate it beforehand.

By the way, the research and development of engines, our country has long been on the right track. Of course, there are still many problems that need to be solved, but overall it is good.

The above content is based on the content of the Q group lecture activities in the lecture hall of the Chinese Nation.

The existing engine is very important, the engine is one of the core components of the fighter, only the independent ownership will not be controlled by others, the existing engine is designed to design the aircraft, the engine compartment of the aircraft must accommodate the engine, the maneuverability of the aircraft must be designed according to the performance of the engine, the aircraft first and then the engine makes the aircraft performance not meet the design standards, and the engine development cycle is very long, once it lags, the aircraft can not be put into service, resulting in a decline in combat effectiveness. It was forgotten that during World War II, Japan could only use zero top cylinders because of the unqualified engine of Zidian.

You're quite right. At the time of Wen Ge, some domestic aero-engine experts were detained as "science and technology only, forgetting the supreme instructions of the hierarchical struggle," and the scientific and technological personnel who returned from foreign countries were branded as "Su Xiujian die" and "US imperialist service." Among them, most of the experts invited by Japan were precision machinery experts, and many aviation experts and economic experts were invited by the United States and the Soviet Union.

There was no precedence between the development of engines and airplanes, because the manufacturers of engines and airplanes were originally two families.

Civil aircraft generally have 2-4 engines.

4 rounds: Boeing, Douglas DC-8, Airbus A300, A340, A380, DH106 Comet, VC10, Il-62, Il-86, Il-96. Chinese Y-10.

3 rounds: Boeing 727, Lockheed L-1011 Samsung, Douglas DC-10, HS121 Trident

2 rounds: Boeing, Douglas DC-9, McDonnell Douglas MD-80, MD-90, Airbus A310, A320, A-330, A-350, BAC1-11,

Boeing's are generally under the wings, the propellers are generally on both sides of the wings, and some are in the nose.

Jet fighter engines are generally in the armpits.

In the case of a twin-engine aircraft, two engines work at the same time, and a four-engine aircraft has four engines working at the same time.

Of course,,, the three major aero engine brands independently developed by China are: Kunlun, Qinling and Taihang.

The Kunlun engine is the first aero engine in China that has completed the whole process of self-design, trial production, test and flight test, and is the most advanced military turbojet engine with medium thrust in China. The military code name of the Kunlun engine is "Turbojet 14".

"Qinling" engine: China's first medium-thrust afterburner aviation turbofan engine "Qinling" is another major breakthrough in the field of aero engine manufacturing in China after the "Kunlun" engine. The engine is a twin-rotor turbofan engine, which has the characteristics of stable operation, reliable and rapid starting, good altitude and speed characteristics, low cruising fuel consumption rate and good maintenance.

The "Taihang" engine is China's first high-performance, high-thrust, afterburner turbofan engine with independent intellectual property rights, which ends the blank of domestic advanced turbofan engines. The Taihang engine was developed by China 606 Institute and is a third-generation domestic large military aviation turbofan engine. It adopts a large thrust ratio and a fully automatic digital control system, and the maximum thrust does not exceed 12,000 kg.

At present, it is mainly used to equip China's third-generation high-performance J-10 fighter.

PS: Although after years of hard work, China's self-developed engines have made great progress in various performance indicators, but there is still a certain gap with foreign countries (especially Western countries).

There are two categories. One.

Piston Aero Engines :

Generally, reciprocating piston engines are used, but there are also rotary piston engines and free piston engines.

For vintage or light ***, vintage or light propeller fixed-wing aircraft, paramotors, rotorcraft, hovercraft, armored vehicles, etc.).

It is characterized by simple, cheap, economical manufacturing and maintenance technology, and is widely used in civilian use.

Two. Jet:

There are five categories of gas turbine engines.

1 Afterburner and non-afterburner turbojet (for fighters, attack aircraft, bombers, etc.) fuel-efficient supersonic engines.

2 Afterburner and non-afterburner turbofans (used in large transport aircraft, civil aviation, bombers, early warning, fighter jets, etc.) are more fuel-efficient than turbojets.

3 Turboshafts (modern ***, and new tanks, etc.) *** special, new tanks are also used.

4. Turboprops (medium-sized transport aircraft, such as Y-8, ground effect aircraft, etc.) are used to modify piston propeller aircraft to increase speed.

5 Turbo propeller fan (Mao Zi made out to save some fuel An 70 first use.) did not generalize) faster than vortex.

The above 5 types are divided into axial flow type and centrifugal type according to different compressors. Now the basic use is axial flow type, centrifugal type has been eliminated.

Then there are all kinds of liquid or solid fuel propulsion engines, and the technology is mature

Ramjet engines - in 3 categories - "subsonic" close to and less than Mach 1, "supersonic" 1-5 Hz, "hypersonic" 6-15 Mach.

Composite combination engine --- several different engines and combined into a new engine group to meet different flight needs.

Plasma engine--- Ion engine The United States has matured, and it is used in satellites and other engines for attitude and orbit adjustment.

New concept engines under development are:

There are three types of pulse engines - pulse detonation engines, oblique detonation shock wave engines, and continuous shock wave engines. (Wide range of applications in the future).

There are two types of atomic engines--- which use controlled atomic decay to cast energy propulsion (it is estimated that Gao Meng's first code is polluted, so it can be used for missiles).

- Use nuclear power generation technology to generate enough electrical energy to supply ion thrusters (energy-saving, environmentally friendly, low-carbon, suitable for space stations and space vehicles).

Alternative engines that are not in the above two categories:

Other engines used in the aerospace sector.

I've heard of the unseen, the electromagnetic anti-gravity engine, the Van de Graff combined engine, the Marconi vortex engine. (Used on flying saucers.) It is said that the drawings were stolen by the United States, and the physical prototype was blown up by the Nazis. ）