Chapter 272

Yang Weiping's words were quite heavy.

Most of the old scientists in the audience bowed their heads in shame.

Director Yang said well, how old is he? At the beginning of the 10-year turmoil, I was afraid that he was still a teenager, right? But how can people not be affected in the slightest and study professional skills assiduously?

Don't look at the tension between China and the Soviet Union now, it has reached the lowest freezing point in history, but in the eyes of these old experts and professors, the Soviet Union's technology is still first-class. Because the vast majority of them had the most access to Soviet technical materials.

It is true that the United States is a military power, but the Soviet Union is no worse than the US imperialists! In terms of military strength, the Soviet Union is even a few points stronger than the US imperialists.

"In terms of age, most of you here can be my grandfather. After a pause, Yang Weiping looked around the audience with bright eyes, and continued in a loud voice: "However, in the fields of science and technology and academia, regardless of age and seniority!

The Nobel Prize Organizing Committee sent me many telegrams inviting me to accept the 1977 Nobel Prize in Physics, but I didn't care about it at all! Honor and fame have become not important to me at all. In my mind, China's aviation industry cannot afford to develop, and it is impossible to build a world-class third-generation fighter to protect the motherland's airspace and maritime frontiers.

It's not that I, Yang Weiping, am young and frivolous, and it's not that I'm boasting about myself here, because I can tell you completely responsibly about the development of future military aircraft, the development of future aero engines, and the development of future aerospace materials on this earth. I, Yang Weiping, admit that I am second, and no one dares to call one!

The ancient sages once summed it up and summed it up, people. There is foresight, there is foresight, there is foresight, there is foresight, and more so I can sit here today. Thanks to the trust and entrustment of the CPC Central Committee, the State Council, and the Central Military Commission, it is not because I have any old qualifications and qualifications, but because I Yang Weiping is that kind of prophet and foresight!

This. It is not that I, Yang Weiping, are boasting about myself, but that it has been unanimously recognized by scientists from all over the world! Therefore, I solemnly emphasize here today that I do not need anyone to point fingers in front of me Yang Weiping for the next development direction of China's aviation industry!

The right direction can not only save us a lot of detours, but more importantly. The correct research direction will not waste China's current limited resources, funds, manpower and material resources!

You are all engaged in scientific research and academic research, and you should all know that scientific and technological innovation, sometimes you only need to go in the right direction, and you can draw inferences from one another. All-in-one. On the contrary, if you are wrong, or even walk into a dead end, you will go all the way to the black!

Comrades, in the past 30 years, we have been imitating Soviet products and techniques! From the MiG-15, MiG-19, and MiG-21 to the MiG-23 and MiG-25, from the Soviet P11, P13, AL19, and AL21 to the British Spey 512 and Spey 202, we have been imitating and copying the cat and the tiger all the time!

It is certainly true to learn from the enemy's long skills to defeat the enemy. However, when we imitate and learn from the strong points of others, we have to limit our thinking to the thinking patterns of others for what reason?

But how to take, how to go, how to define the essence and the dross correctly, this requires us to use our brains to the fullest, to use our wisdom. I once said that the wisdom of our Chinese nation is incomparable! I firmly believe in this, whether it was in the past, at present, or in the future!

To innovate and create, we must dare to think and do! Don't be timid and shy away! On a correct road of development, we can diverge and display our wisdom and thinking to our heart's content! Here, I solemnly reiterate and stress once again that I don't need you to think about the right and wrong directions, you just need to follow my established research direction, unswervingly go down this road, open up mountains in every mountain, and build bridges in rivers! If you encounter a stubborn rock that stands in the way, then resolutely blow it up!"

"Whoa, whoa, whoa, whoa......" The scene erupted in warm applause.

Through this meeting, Yang Weiping established and unified the development direction and policy of Huaxia Aviation Industry, and took turbofan engines as the main direction of aero engines.

At the same time, the serious defects and erroneous ideas that existed in the past design process of the J-8 were corrected. A pure delta wing and a long fuselage layout lacking an optimized design were categorically rejected.

A small number of discordant voices have largely disappeared after this symposium. Everyone according to their own division of labor, in their best field, in order to maximize their independent innovation spirit.

In the design of modern fighters, the first thing to determine is the thrust level, thrust curve characteristics and thrust-to-weight ratio of the engine, because the performance of the engine determines the design concept and performance of the fighter.

The development equipment and performance indicators of aero engines have a bearing on national security and territorial integrity. The lack of a suitable engine model usually has a fatal impact on the design and equipment of fighter aircraft, resulting in the incomplete and inefficient tactical system of the entire air force, and an aero engine with advanced performance and excellent reliability can also make fighter performance "decay into magic".

The high-thrust military turbofan engine is the engine type with the highest thrust level, the most difficult development technology and the most core engine type in the development of the type spectrum among all military aviation engines. The high-thrust turbofan engine has a direct impact on the development, equipment, and performance of twin-engine heavy fighters and single-engine medium-sized fighters, and thus has a bearing on the formation of key tactical capabilities such as the air force's struggle for air supremacy, medium-range interception, and long-range precision strikes.

Its improved turbofan engine with large bypass ratio is usually the preferred power for strategic bombers, strategic transport planes and large passenger aircraft, so it also has a far-reaching impact on the national strategic deterrence, striking power, the development of civil aviation and even the national economy.

Pre-research engineering, core machine planning, engine serialization. It is the development path determined by Yang Weiping for Huaxia Aviation Industry.

In fact, these three key concepts and concepts are an inseparable whole, which constitute the backbone of the entire thinking system of developed countries in the development of aviation power.

The research and development of aero engines is divided into: basic research, exploratory development (applied research), advance development and engineering development.

Aero engines, especially military high-push turbofans, are the highest technological achievements of a country's industrial and scientific research system; in fact, only the five permanent members of the UN Security Council are the only countries that can develop advanced military turbofans. And these five countries are all recognized by the world as great powers and powers with nuclear weapons.

The development of science should not have too strong utilitarian colors, and it is always far from quenching the thirst of the near to develop it from scratch when it is needed.

Physically speaking, the core engine is the core part of a gas turbine engine consisting of a compressor, a combustion chamber, and a turbine that drives the compressor. It continuously outputs gas with a certain amount of usable energy, so it is also called a gas generator.

In terms of technology, it is a core machine composed of advanced components that have been verified in exploration and development (applied research). Its main characteristics are that the blades are relatively short, the working environment temperature is high, the pressure is high, the speed is high, and the stress is large. In use, there is a lot of failure rate in this part. Therefore, the process used is complex, the material is expensive, and its development cost and development cycle account for a significant proportion of the engine development. It has become the most concentrated part of the main difficulties and key technologies in the development of aero engines, and it is also a concentrated embodiment of the advancement and complexity of aero engines.

The most important way to serialize the engine is to change the main cycling parameters of the engine, such as pressure ratio, bypass ratio, air flow, turbine inlet temperature, etc., by changing the diameter and stage of the fan or low-pressure compressor and the cooling technology or material of the turbine under the condition that the basic geometric parameters of a mature core machine remain unchanged, so as to obtain engines with different performance and use.

By equipping the same core machine with different "low-pressure components such as fans, low-pressure turbines, afterburners and related systems", a series of engines covering a certain thrust (power) range can be developed with low risk. Meet the power needs of aircraft for different purposes, so as to achieve the multi-purpose goal of the core aircraft. The road of developing a series of engines using multi-purpose core aircraft has always been highly valued by developed aviation countries. And it has become the main technical way for the development of engine series.

This concept is Yang Weiping's later generations to summarize the development characteristics of the American aviation industry, it is the implementation of the above three scientific research and research and development concepts throughout the development of the engine, to forge the world's top and most advanced military and civilian power models.

The correct direction of development has been determined, and American, Soviet, and British aero engines for reference have also been brought in. How to create a third-generation core aircraft with Huaxia's completely independent intellectual property rights, and develop a series of aero engines based on this has become the top priority of Huaxia First Aviation Industry Group.

For the first third-generation core machine plan that Huaxia began to develop, Yang Weiping put forward two plans in a targeted manner.

The first solution focuses on the design, development and validation of core engines and related components at 18 kg/s (40 lb/s) first-class flow rates or more, and the developed technology can be used in future large turbofan and turbojet engines.

At its core, it is the development of turbine engine gas generator technology for current and future aircraft propulsion systems. The goal is to incorporate evolving technologies into advanced gas generators to evaluate performance, cost, durability, repairability, and maintenance in a realistic engine environment.

Through the test of this test core machine, the key technology of the engine can be enhanced to be transformed into engineering development at an early stage and with low risk, so that it can be applied to derived or new engines. These technologies can be used in a wide range of military and civilian systems, including aircraft, missiles, land combat installations, and corresponding space launches from ships.

The other solution is the design, development and verification of the core engine and related components mainly for the flow rate of 2.27-13.6kg/s (5~30lb/s), and the developed technology can be used for future turboprops, turboshafts, small turbofans and turbojet engines.

The scheme is divided into three parts: one for engines up to 2.27 kg/s (5 lb/s), the second for turboshaft engines in the 4.53 kg/s (10 lb/s) flow range, and the third for axial and centrifugal vanes in the 6.8~13.6 kg/s (15~30 lb/s) flow range.

Once this plan is successful, the size of these core engines can be doubled or halved, and the corresponding low-pressure components can be combined to form a series of engines that meet the requirements of a wide range of aircraft.

Obviously, Yang Weiping does not intend to copy neither the AL31 of the Soviet Rurika Design Bureau, nor the F100-PW-100 of the American Pratt & Whitney Corporation and the TF30-P-412 of the British Rolls-Royce Company. He wants to rely on his grasp of the future development trend of aero engines, not only to develop the third-generation core engine of Huaxia, but also to develop the fourth, fifth, sixth, and seventh generations!

It is also based on this starting point that Yang Weiping almost completely denied and overturned the imitation and improved aero engines such as WS6 and WS9 that are currently being developed in China. Without its own core aircraft, it is impossible for Huaxia's aviation power business to achieve a real take-off.

Yang Weiping gave detailed guidance on the specific division of labor to the various enterprises affiliated to Huaxia First Aviation Industry Group:

Design, fabrication, assembly, testing, and analysis of advanced components in order to grasp the characteristics of new and improved components in terms of aerodynamics, thermodynamics, mechanical properties, production costs, and maintenance costs;

An initial structural evaluation study is conducted, focusing on the validation of the structural life model, but does not include the evaluation of the durability and other structural characteristics of the gas generator component technology in the next step. Validation is followed by life assessment, assurance, steady-state and transient performance, and verification of advanced components that are mature enough for technical transfer;

One of the most important tasks is to evaluate the technology of turbine engine components, validate performance, structural and cost models and design systems through gas generator testing. The use of the core engine has been proven to significantly reduce fuel consumption, increase thrust-to-weight and power-to-weight ratios, and improve the reliability and maintainability of the engine's gas generator.

Yang Weiping took the internal secret code name "Plan A" for this huge plan, which was directly managed by the Commission of Science, Technology and Industry for National Defense, with an annual budget of $300 million.

In Plan A, Yang Weiping not only fully implemented the concurrent engineering method, but also introduced the ISO quality management standard system. It has fundamentally changed the backward management mode and methods that domestic enterprises have always used, and then realized the integration with international standards! )

PS: The F100 engine was mistakenly written as General Motors in the previous article, and it is corrected here, please forgive me!