When it comes to gear transmission technology, there is still a 10% share to be agreed, which is simple and ensures that MTU is convinced.

"The remaining 10 percent share is for our company to complete the engine control system, which is just right, and I believe that MTU will not object to this."

What is there to oppose this, MTU has only a 40% share in the first place, and it is just right to count the engine control system as 10%. The most important thing is that MTU itself has not played with the turbofan engine control system, and has not developed the turbofan engine machine, so the control system should not be considered.

Readily agreed, even if the core machine and control system were taken by the Southwest Airlines Science and Industry United Company, the remaining projects also included fans, external channel casings, low-pressure rotors, tail nozzles, fuel systems, lubricating oil systems, starting systems, etc

Although it is piecemeal, most of them are not difficult projects, but they are not simple at all, and there is no problem with MTU working together.

Being able to take this opportunity to master the design and manufacture of fan blades for turbofan engines with high channel ratio is the biggest gain of MTU this time, and it is not all insignificant projects.

After roughly calculating, it felt that there was basically no problem, and Claude readily agreed.

"Okay, our MTU company accepts this task allocation plan, so can we discuss the long-term development of this engine?"

The so-called long-term development here refers to the serialization of an engine, and the aero engine will be continuously improved from the first basic model. There are models with increased thrust and models with reduced thrust, and two or three engines derived from one engine are the least. The engine with great potential and large market has been changed out of more than a dozen. It's normal to form a family.

Since the German side has this kind of idea, the institute naturally cooperates with the research.

"Of course, we have to develop in series, we can make changes on the core machine to achieve a change in thrust, but under normal circumstances, this total plan is a bit more than worth the loss, and it is best for you to change it on the fan."

The change of the core machine is not a fun thing, of course, if the total temperature of the high-pressure turbine of the core machine is broken. That could be improved. This thing only needs to change the material to achieve additional push, and it is the simplest and most effective to change, and it is also the most demanding for basic industries.

MTU is also mixed in the aero engine industry, knowing that a follow-up improvement has little to do with the core machine, most of them are only improved outside the core machine, and Claude will not say more, and it will be improved slowly in the future.

"Okay, since that's the case, let's put this aside for the time being. We talk about other things, such as how big the diameter of this engine is, which will directly affect the diameter of our fans. ”

Claude's question is not the answer that Yang Hui and Director Bai can give, this thing has to be given by Xifei and MBB aircraft engine installation method: wing crane or tail crane.

If the tail crane is used. The diameter of the natural engine is not too strict, and if the wing crane is used, the distance between the wing and the ground needs to be taken into account. This will directly limit the diameter size of the engine.

You don't see the Boeing 737's engine short, it is no longer a complete circle. The arc near the ground has been stiffened to a 'tangent line', which looks uncoordinated.

The reason for this is that the engine size is too large. If the nacelle is not changed, the ground clearance of the engine will exceed the red line, and the possibility of accidents will increase greatly.

Now, it is impossible for Xifei and MBB to give a definite data, the new aircraft is still in the JDP development stage, and before this stage is completed, it is not possible to give the subsystem interface data of the aircraft, so MTU can only make the fan diameter as small as possible, or put this aspect first.

"Today, we have made great progress in our talks, and a preliminary consensus has been reached.

As Director Bai announced the adjournment of the meeting, everyone realized that they had unconsciously discussed it here at ten o'clock in the evening, and the overtime shift was like this.

Of course, in the 0011 base, 10 o'clock in the evening is not too late, the heavy project makes everyone like a winding machine, constantly moving forward as planned, ten o'clock is just the time for supper, not until 12 o'clock at night, and there are really few who will get off work.

Director Bai left in a hurry, Yang Hui knew that there must be something, and he didn't say more, he took these guests from afar to the guest house to stay, and then went to the office, there must be something else.

As expected, Yang Hui saw Director Bai in the office, he should have been waiting for him for a long time, but it shouldn't be a bad thing to see this way, just this point, Yang Hui was greatly relieved.

It's not a living person, after Yang Hui found a place to sit down, he asked about the situation, and the news he got made Yang Hui a little surprised, the efficiency of the Americans is so high?

"That's the case, just now Northrop came to the news, they have passed the review of the United States, the first batch of 12 avionics engineers, plus the F20 cockpit avionics system data has taken off; Northrop's eight engineers in charge of aerodynamic design brought the YF17's edge wing materials all packed. ”

Northrop is very anxious, but this is what Yang Hui likes, and Yang Hui is also happy to learn the technology early.

"So, the base needs to arrange accommodation for these people, and at the same time prepare to start the pre-research of the new twin-engine fighter?"

Looking at Yang Hui with a smile, Director Bai wondered, how could this Yang Hui be so smart, he could guess anything, it was too demonic, not normal.

Fortunately, Niu Kesi's ideamakers don't believe in cow ghosts, snakes, and gods, and this kind of sign is suppressed as soon as it appears.

"That's right, the construction of the expert building of the base has just begun, and it will take time for the engineering troops to be efficient, and the new building will not be used until at least next year. But now these are not problems, the main thing is to prepare for the pre-research of the new aircraft, and the base is ready to hand over this project to you, so you just pack up and rush to one overnight, and you don't have to worry about the engine here. ”

Pre-research of the new aircraft, leave this matter to yourself!

A good thing, an absolute good thing, Yang Hui likes this kind of work the most, the pre-research of a new aircraft, Yang Hui can arrange the architecture of the new aircraft as he likes, and later generations have seen so much, now is the time to play a role, especially the aerodynamic design.

Yang Hui also proposed the aerodynamic design of Jianjiao 7A, and at the same time, the side plate technology was proposed by Yang Hui, and in the base, Yang Hui can be said to be the first person to deserve the pneumatic architecture.

Although the aerodynamic design of the aircraft that Yang Hui took out is not the best, it is definitely the most suitable, and this ability is particularly valuable in the eyes of the base.

did not shirk, Yang Hui happily prepared to start the pre-research of the new aircraft, and now Yang Hui did not know what he could do in this pre-research, and now the situation has become a little different.

The biggest thing is the engine, if the development of the new medium thrust core machine goes smoothly, then the new aircraft will definitely not use the turbofan 10 that Yang Hui planned at the beginning, this thing has too little thrust, and F404.

On the basis of the newly developed core machine, the development of a new medium thrust, the thrust will not be too different from the RD33, a military engine with a maximum afterburner thrust of nine tons, installed on the YF17 is already the F-18E / F level of the later generations, that is called the Super Hornet, it is already a quasi-heavy aircraft.

As for the Super Hornet, Yang Hui thinks it's pretty good, focusing on ground attacks, and the bomb load is not small, and the Su-27 introduced in the Republic can only fight rockets in the nineties, and can make an aircraft similar to F-18E/F.

That guy simply doesn't say anything, equipped with anti-ship bombs to attack the sea, an absolute sharp weapon, the self-defense ability is stronger than the leopard by more than a star and a half, and against Wanwan and Vietnam, this kind of aircraft with strong attack ability is a sharp weapon.

As for saying that the range of the F-18E/F is shorter than that of the Leopard, this is simple, there is a thing called a conformal fuel tank, which does not occupy the wings and under-anchor points after being installed, and can also be capable of running with long legs. (To be continued......)