GM, as the biggest beneficiary of the Rolls-Royce bidding team's mistakes, appeared to be decent in the subsequent introduction of the CF-34-3 engine, and roughly explained the situation of the CF-34-3 engine.

As the developer of the engine, GM must have picked up everything and said, before and after the CF-34 engine performance introduction is quite comprehensive, but also the CF-34-1/2 series of finalized delivery a few years ago are also introduced by the way, aiming to introduce the excellent performance of the previous engines in several other regional airliners, to add color to the overhauled -3 engine, and win the engine supporting project.

At this time, Yang Hui also made all kinds of difficulties and exposing the shortcomings of the CF-34-3 engine brought by GM, which is exactly the purpose of this meeting.

"For the CF-34-3 engine you brought, I don't know how General Motors can say that a 7-ton aero engine is a modification of a four-ton aero engine, the thrust gap seems to be about to double, this is definitely a new design of the engine, CF-34-1/2 The successful experience of the two engines may not be extended to the current new engine, so this so-called prototype experience is better to wash and sleep."

For this engine planned in the 7.5-ton class, this thrust has reached the level of the previous CF-34-10A, and in the previous GM's promotion of the CF-34-40A engine, GM at that time was happy to say that it was a newly designed engine. There is always a problem with the argument that these two very different manifestations of the common are used.

Yang Hui obviously agrees with the general statement of the previous face. Aside from the new design, Yang Hui couldn't think of any way to nearly double the thrust of an engine.

Yang Hui exposed GM's lies at this time. This makes the general side really a little annoyed, but fortunately, everyone is a battle-tested warrior, and the general breed can still have its own interpretation for this statement.

Although it sounds a bit far-fetched, people are thick-skinned enough: "This is not right, our CFG-34-3 engine this time is indeed an improvement on the basis of the CF-34-2 engine." We first improved the core of the CF-34-2 engine, added a one-stage high-pressure compressor to increase the air flow of the core by 13 percent, and improved the fan design. Expand the bypass ratio. The design of the combustion chamber, high/low pressure temperature turbine, and control system still inherits the excellent design of the previous one, and these time-tested designs will surely make the development of our CF-34-3 engine more smooth. ”

Yang Hui heard for the first time that there was such a high-sounding Zhang Guan Li Dai, not only changed the engine fan design, but also changed the design of the core machine, such a major operation was embarrassed to continue to say that it was a small improvement, which has been compared to the Southwest Science and Industry from the turbojet 13 based on the improvement of the turbofan 10 engine.

I didn't see the Southwest Science and Technology Association cheekily say that the turbofan 10 engine was a turbojet 13-X model, and now Yang Hui can be regarded as seeing the cheekiness of the old giants.

However, GM has said that it inherits the combustion chamber, high/low pressure turbine, and control system design of the CF-34 series engine, so what else can be said. Since people have inheritance, it can be said that it is an improved model, and the big deal is said to be a major change, as for what the situation is, I believe the review team can still understand.

In this way, Yang Hui's purpose was achieved. Later, it will be up to the review team to see how this engine will be viewed, but Southwest Science and Industry did not continue to say anything, and Luo Luo, who was still full of combat effectiveness just now, died down at this time. It seems that they don't find anything wrong with GM's boasting of the CF-34-3 engine.

This silent performance made the judging team even more dissatisfied with Rollo, didn't I call you here this time just for people, and you expose each other's shortcomings? You don't cooperate with the work. This performance is a bit too disappointing.

Seeing that Rollo was silent, the judging team had no choice. I can only turn to the last and let Rolls-Royce state the advantages and disadvantages of this BR715 engine they brought, without too many words, as if he was going through the motions.

The dissatisfaction of the judging team is almost clearly on his face, and Luo Luo can see that this thing is wrong no matter how blind he is, but there is no good way now, so he can only silently do the right thing that should be done first, and talk about other things later.

When Rolls-Royce began to state that he had brought the BR-715 engine to participate in the bidding, it could be seen that Rolls-Royce had put a lot of effort into it before he came, but at this time, it was half the effort.

After Rolls-Royce finished stating the situation, it was not Yang Hui who was the first to criticize Rolls-Royce's BR-715 engine, nor was it the MTU who had just torn up with Rolls-Royce, but GM took the lead in attacking Rolls-Royce's BR-715 engine.

Although Rolls-Royce did not embarrass GM's CF-34-3 engine just now, this does not mean that GM now wants hello, hello, everyone, this is a moment related to the future of the engine of both sides who can seize the lead in the seven-ton turbofan engine market, in GM's view, the threat of Rolls-Royce is greater than the initial CG-2000, compared to the huge risk of CG-2000 engine, the threat from the old opponent BR-715 is the most important to consider.

There was no hesitation at this moment: "The BR-715 engine is also a completely new engine, and it is clear who is more risky to develop a completely new engine than to build on an engine that has only recently been finalized and has performed well in service, and we need not say more." ”

Now it is to make a comparison on the strengths of GM's own engine, first step on Rolls-Royce's BR-715 engine hard, but this is not enough, to deal with this kind of old opponent, after seizing the opportunity, you must make a big move, you must not let the opponent have the slightest chance to counterattack, it is best to kill in one hit.

Rollo's eyes are now green, what do you want to do, just now I took the initiative not to dismantle your platform, you don't understand the rules now will take revenge, now the biggest task of both sides is to squeeze this CG-2000 engine out of the market first, the world aero engine market is so big, don't you know that this market can't support too many aero engine manufacturers?

For Luo Luo's idea, although he has a big picture of the overall situation, but the general people here are blind and can't understand Luo Luo's thoughts, or they pretend not to understand, and people have their own ideas.

In any case, the general had already issued a battle horn, and it was impossible for Rollo not to respond, but without waiting for Rollo's explanation, Generic questioned again.

"Although the performance of the BR-715 engine is good, this engine also makes the same mistake as the CG-2000 engine, which is to blindly pile up new technologies, but although the BR-715 engine is new, it does not play a prominent role, but increases the cost of use, which is even worse than the CG-2000 engine, which is a very unrealistic design for a low-cost regional civil aviation engine."

The question raised by GM this time is actually somewhat untenable, Rolls-Royce's BR-715 uses some advanced technology, compared with GM's engine developed from the CF-34-1 engine to have advantages in basic design, after all, GM's CF-34 engine is still a civilian model developed from the military TF-34, which is the old guy who was finalized and delivered in 72.

Naturally, GM's CF-34-3 engine is old and the manufacturing process is relatively backward, and various factors lead to lower production costs, but it is not so much about BR-715, Yang Hui is the first time to see that when his technology is backward, he can batch the engine that is more advanced than himself so useless, which can be regarded as a trick.

Seeing that GM's side could be so strong, Rollo angrily launched a Jedi counterattack and vowed to give GM a good look.

"Our BR-715 engine" (to be continued. )