While canceling the imported guide vanes, the bearing fulcrum at the front end of the fan is also canceled, which is quite radical.

This design has absolutely no precedent for twin-rotor military turbofan engines, and Southwest Science and Industry can really come up with the engine in accordance with the specified time node?

This has become a point of concern in everyone's hearts, after all, this kind of design is too risky, only at this time, Wu Daguan Wu Lao was thoughtful.

Wu Lao is very clear about the technical ability of Southwest Science and Industry, and from the perspective of the current scientific research ability of Southwest Science and Industry, it is really possible to cancel the front end bearing point of the fan.

But due to his previous work experience, Wu Laona also worked as the chief designer of the Hongqi Factory, responsible for the localization of the turbofan 9, and it is still a little impossible to stand up and speak for the Southwest Science and Industry at this time, after all, the palms and backs of the hands are meat.

However, the people who understand the situation are not young and old, and soon some people stood up to affirm the Southwest Science and Industry Program.

"I think Southwest Science and Industry has the technical ability to complete the design of the scheme, for many reasons, on the one hand, the fan design of the Southwest Science and Industry scheme is excellent, and the overall weight can be significantly reduced, which will be much lighter than the Soviet RD-33 engine; On the other hand, Southwest Science and Industry has a technology to manufacture a high-performance twin-rotor turbofan engine spindle, and the two points should add up to the same design as the RB-199 engine, that is: cancel the front point bearing point of the fan. ”

Hearing that someone finally stood up to affirm the Southwest Science and Industry Plan, Chief Li finally breathed a sigh of relief, although Chief Li was also full of confidence in this plan. But being confident alone is not the same as being affirmed by others.

At this time, Yang Hui also agreed with this, and Yang Hui naturally knew what the technical ability of Southwest Science and Industry was. Cancel the imported guide vane and fan front point bearing point, which is now the only aspect that Southwest Science and Industry can do in other subsystems except the core machine.

With the technical ability of Southwest Science and Industry. This can be done with a single pick, and there are a range of benefits that can be brought by lighting up this technical solution.

Thinking back to the previous one, it seems that when Rolls-Royce developed the EJ-200 engine, it once again inherited the low-voltage fan bearing point design of the RB-199 and adopted this design.

Now it's different, Southwest Science and Industry also wants to use this technology, although now the EJ-200 engine jointly developed by Europe and Security has also achieved the operation of the verification machine, but this has not yet been finalized, and the final new push and EJ-200 two engines who are the first to finalize the production. Then it depends on the technical ability of Southwest Science and Industry.

Now Yang Hui pointed out that the southwest science and industry program adopts this design, which can be regarded as the strength of a hundred schools, as long as the southwest science and industry successfully conquers this technology, it can be regarded as a local technology to the forefront of the world, it is necessary to know that the last super artifact F-119, F-135 two turbofan engines can also only use the design of imported guide blades and fan front point support at the same time.

There may be a difference between the big push and the medium push, but there is no doubt that the US imperialists did not use this technology in the previous face, and they also did not use this technology in the US imperialists' F-414 mid-thrust turbofan engines.

To put it more objectively, the non-imported guide vane and the cancellation of the fan front point support technology adopted by the new Zhongtui are more like the arc end gears widely used in European aero engines. It's all an original design by the British.

It's not that these two technologies have the same effect, but that the two technologies have the same background and experience, and they are both very good techniques.

The reason why the United States does not use this technology in its aero engines is due to the unique design habits of the United States. This habit formed over the years in design will become a very powerful demon in subsequent design.

It can be said that as long as the US imperialists can come up with the same effect, or even inferior technology, the arrogant US imperialism will disdain to use these technologies of the Europeans. After all, in the aero engine industry these years, both in terms of scale and technology. The United States is the center of the world, and the boss still can't lose face.

Regardless of how good some of the "tricks" of the Europeans are. Anyway, you can't surpass the existence of my Great America, and the strength of my Great America is not something opportunistic, but a dignified use of a strong comprehensive strength, can you Europe do it

The United States disdains to use these excellent technologies, but it does not mean that these technologies are backward, on the contrary, these technologies are still super good things, and the Republic cannot ignore these technologies if it wants to develop rapidly.

Old Europe is still quite rich in many times, and it is sure that you can find some good things by panning for gold.

Fortunately, the current Southwest Science and Industry has no historical baggage in the design of the new push, and there is no fixed habitual design.

For example, in addition to using a large number of excellent European designs in the development, the latest excellent designs of the Soviet Union were also used to install new medium-thrust engines.

At this time, for example, questions were raised from the military side. Just now, the army has not spoken, and listened to the report of the Southwest Science and Industry Department, and now I hear that the Southwest Science and Industry is becoming more and more radical in the design of the new promotion, and finally no longer silent!

"For the mature core machine of the Southwest Science and Industry Program, the army is naturally very welcome. But is Southwest Science and Industry a little too radical in the design of the fan now? Cancel the imported guide vane, fan front end bearing point, such a design is currently only used in the European RB199 engine, in the twin-rotor engine can be done, we do not know ......"

Hearing this, Yang Hui's heart also sank, and the army felt that such a design was a bit too radical, so what about it......

After all, the army is the purchaser and investor of the engine, and if the army has special requirements, Southwest Science and Industry will naturally not be able to twist its arms and thighs.

Chief Master Li on the stage also understood this, and his heart jumped, feeling that things were a little more than expected, and immediately turned to ask the army's opinion.

"Our Southwest Science and Industry naturally hopes to use all the technologies we can use in Xinzhong, but it depends on whether the army is willing to take these risks, if the army feels that there is no need to take too many risks, it is naturally ......."

At this time, Mr. Li is also because he has been in the southwest science and industry for many years, and is deeply affected by the market-oriented scientific research system, and all scientific research projects must be subject to the requirements of customers, and now the customer is the army!

Chief Li's response made the current army a little confused, and he didn't expect that the southwest science and industry changed its words so quickly, and the army was not very adaptable for a while at this time, when was our request so easily satisfied?

I think that when I was on the military project in the past, I didn't have to have to fight with the Science and Technology Commission and the project developer for several months, but now this is really ......

I suddenly didn't think that the army would naturally ask for too much.

"To say that our army is naturally not particularly dissatisfied with the plan of Southwest Science and Industry, on the contrary, we think this is a very good plan, that is, there are some worries about the design of canceling the imported diversion vanes and the front fulcrum of the fan."

As soon as he finished speaking, he felt that something was not appropriate, and in a blink of an eye, it was another statement.

"We do not advocate the elimination of imported guide vanes. The main thing is that we need to have a higher surge margin in the new push, if it can reach more than 30% of the surge margin, then whether you want to cancel the imported guide vanes is up to you. ”

The army is not false, the army is worried that the impact on the engine surge margin after the cancellation of the imported guide vane is too great, so it reported a surge margin of 30 percent, hoping to use this ultra-high design index to let the southwest science and industry return to the "right path".

However, did Southwest Science and Industry really give up the original design before this 30% target?

This is not the inherent style of the Southwest Branch, although the army has directly changed the original 20% surge margin to 30%, but it is not impossible to achieve this with the technical ability of the Southwest Science and Industry. (To be continued.) )