For the situation of the army, Yang Hui, a person who came from the previous face, has naturally seen too much.

After all, this kind of thing is not unique to the republic, the industrial system of the republic is inherited from the Soviet Union, and the institutional loopholes that will exist on the republic's side actually exist in the Soviet Union.

Of course, the USSR naturally overcame this problem by creating a strong intermediate coordination unit between the army, scientific research units, and from then on let the USSR (Russia)

The military industry and the army have a good regulation.

Of course, as a potential adversary of the republic, the USSR (Russia) could not escape the observation of the republic.

After the USSR (Russia) adopted the creation of a new intermediary adjustment unit, the problems between the army and scientific research units in the military-industrial project, after the republic itself saw the effect, naturally there was a need to study it well.

This is why the General Armament Department, one of the four general departments of the republic, has been established to comprehensively coordinate and manage the development of all the armament of the armed forces, and since the establishment of this department, it has indeed played a great role in coordinating the republic's armament research and development quite well.

However, it has been 98 years since the establishment of the General Assembly, and it must be difficult to count on it now, and Yang Hui does not think that he has the ability to promote the reform of the military system.

Being able to take care of one-third of an acre of land under his own control in his own field is already Yang Hui's thanks, and Yang Hui will definitely not dare to set himself on fire no matter how far ordinary people run in such a thing as army reform.

Yang Hui must know the problem now, but sometimes he is powerless, and Yang Hui can only silently think of other ways when he sees this.

Of course. Pulling the situation back to the bidding here, Fengtiansuo's side can only step down silently.

Although neither the army nor the Science and Technology Commission said that Fengtian's plan was out of play. But the reality is that the chances of Mukden's plan succeeding are slim to none.

Nodding, Director Southwest Cotin, who presided over the meeting, said that it was time for the next project plan.

And the next scenario. Finally, it was the turn of Southwest Science and Technology to take the stage, and he did not get the position of the first speech, but at least he had to get the penultimate finale position.

Facing everyone's eyes, the team of Southwest Science and Industry also moved, and Chief Li naturally stepped into the foreground, and this time was the stage of Chief Li .

Yang Hui was just a supporting role at this time, personally carrying the model materials and walking to the stage with several other staff members.

The model must be big, only after the model is big enough. In order to give people a clearer feeling, there is a super-large model brought by Southwest Science and Industry.

A model that is 10 times smaller is always more flavorful than those that are 30 times or even many times smaller, when Yang Hui and other staff members installed the large model in place.

"Hey, it's another conventional pneumatic layout plan, it seems that this combat attack force still needs to use a conventional pneumatic layout as well, and I don't know which one's plan is more suitable between the two units of Southwest Science and Industry and Fengtian."

Chief Li has not yet begun to introduce the plan, and some people have also begun to point out the plan of Southwest Science and Industry. Various evaluations are being conducted.

The so-called fingering and pointing is definitely not a slap in the face, someone gives a question, and naturally someone has to answer.

"This is worth seeing, although Mukden is the leading leader of domestic military fighters. But the performance in recent years has indeed been unsatisfactory. The corresponding Southwest Science and Industry is different, a typical rising star, the most nourishing military unit in China. The Jian-74 and the JF-17 fighter under development are all well-known projects, and I am afraid that their strength will not be weak at all. ”

For the daimyo of the southwest science and industry here. It's like the shadow of a tree, thundering through the entire system early on.

Listened to this sentence. It seems that there is some truth in feeling, and thinking about the glorious power of this southwest science and industry, I am more sure that this matter is reliable.

"Hey, don't you think this plane is a little strange, although it is a regular aerodynamic layout, I feel that this plane is a little weird in many details."

For the first time, it was the first time I heard someone comment on the plan of Southwest Science and Industry with weirdness, if Yang Hui heard it at this time, I am afraid that the expression would be quite interesting.

And the "weird" here does not refer to the supernatural, but these people are a little strange about the plan brought by the Southwest Science and Industry after carefully watching the large-scale model of the Southwest Science and Industry Program.

The person next to him commented on the plan of the Southwest Science and Industry with weirdness, and the uncle who was more optimistic about the plan of the Southwest Science and Industry just now also said the strangeness of the plan very accurately.

Nodding, he pointed to the model on the stage again, and said with a puzzled expression.

"The scheme of the Southwest Science and Industry, first of all, is completely different in the layout of the vertical tail, the first three plans are all using a single vertical tail, or a double vertical tail design, but this Southwest Science and Industry has given a double vertical tail with camber delivery, which is a bit unusual!"

The iconic cambered double vertical tail was still a high-tech presence in the 80s

Don't look at the back, it's meaningless,-

So, how can you improve the thermal efficiency and propulsion efficiency of a jet engine at the same time, that is, how can you increase the pre-turbine temperature without at least increasing the exhaust velocity? The answer is a turbofan engine. This type of engine adds several turbine stages to the turbojet engine, and these turbines drive a row or rows of fans, and the air flow behind the fans is divided into two parts, one part enters the compressor (inner duct), and the other part is discharged directly into the air (outer duct) without combustion. Because part of the gas energy of the turbofan engine is used to drive the fan at the front end, the exhaust speed is reduced, and the propulsion efficiency is improved, and if the temperature before the turbine is increased to improve the thermal efficiency, more gas energy can be transmitted to the outer duct through the fan by adjusting the turbine structure parameters and increasing the fan diameter, and the exhaust speed will not be increased. In this way, for turbofan engines, thermal efficiency and propulsion efficiency are no longer contradictory, and it is always advantageous to increase the pre-turbine temperature as long as the structure and materials allow.

At present, there are two main types of aviation turbofan engines, namely non-afterburner turbofan engines and afterburner turbofan engines. The former is mainly used for high-subsonic transport aircraft, and the latter is mainly used for fighter aircraft, and the structural parameters of these two types of engines are also very different due to different uses.

The non-afterburner turbofan engine not only has a higher temperature before the turbine, but also has a larger fan diameter, and the bypass ratio can reach more than 8, the economy of this engine is better than that of the turbojet engine, and the available flight speed is higher than that of the piston engine, and it is widely used in the aircraft with a maximum speed of about M0.9 such as modern large trunk airliners and military transport aircraft. According to the principle of heat engine, when the power of the engine is constant, the more working fluid involved in propulsion, the greater the thrust obtained. At the same time, due to the lower exhaust speed, this engine is also less noisy (to be continued). )