Of course, if you want to smoothly promote the "no regrets" plan, it is not enough to have enthusiasm, after all, Tengfei Group is essentially an enterprise, not a good hall purchased for free zero yuan.

If Zhuang Jianye is impulsive, patting his head and starting an aimless gamble with Tengfei Group, it is estimated that it will not take 15 years, and within two years, the huge Tengfei Group will be exhausted.

What's more, the aero engine is definitely a field of slow work and meticulous work, if the experience can't be reached, the level can't be improved, the technology can't be broken, and it's useless to have empty ideals, because this world is so realistic, and power generation with love can only move those brainless whites, and can't change the cruel world.

As a result, making money and brushing experience have become two major problems in Zhuang Jianye.

Needless to say, this is the great cause of Tengfei Group as always, in how this dedication to profit has been deeply rooted in the marrow of everyone in Tengfei Group, really to launch, Tengfei Group can always find new profit growth points with a number of technological innovations in hand.

The difficulty is the accumulation of experience, especially the accumulation of applications in the field of pure aviation.

The reason why the Americans are able to lead the world in aviation development is that the accumulation of experience in their hands is so large that it can make the vast majority of people despair.

It is precisely in this aspect that Tengfei Group is really inferior to the younger brother level compared with European and American giants.

Not to mention anything else, in order to be able to modernize the aero engine test, since the beginning of the 90s, Tengfei Group has invested heavily in the introduction of a complete set of large aero engine test and monitoring equipment from Europe, including a set of air cannons for bird impact tests.

It is capable of launching up to 4 kg of birds, simulating the ultra-high relative speed of the bird and the aircraft when the aircraft is flying, and then through advanced detection and testing equipment, the data produced by the aero engine in such a process can be obtained, so as to make targeted improvements.

At that time, Tengfei Group's WD-60ML large bypass ratio turbofan engine had just rolled off the assembly line, and it was necessary to do this kind of bird impact test with important safety indicators.

As a result, it was done seven or eight times in a row, and the first-stage fan of the WD-60ML large bypass ratio turbofan engine after each impact would be smashed by the high-speed corpse fired by the air cannon, which in turn caused the fan blades to be sucked into the engine, causing damage to the compressor or even turbine blades and even the scrapping of the entire engine.

As a result, the delivery schedule of the WD-60ML large-ducted turbofan engine, which should have been put into use at the beginning of last year, was greatly delayed, so that the Y-17 that went off the assembly line had to use the Russian-made D-30KP turbofan engine to barely obtain the birth permit.

At that time, Tengfei Group had a headache, turned over countless materials, did various tests, and even made the fourth-generation Z-shaped fan blades, but it was still useless, and the birds fired by the air cannon were like fifty or sixty times the vitality bomb, and the fan blades made by Tengfei Group were full of holes, which was no different from paper paste.

In the end, there was really no trick, and no one could afford to spend so much on the engine, so they could only go to their European counterparts to ask about their experience, and the Europeans were quite enthusiastic, and sent a team of experts to the Tengfei Group after a probe: "Just thaw the frozen chickens, ducks, and geese, otherwise you will not launch the poultry for testing, but the shells!"

In this sentence, Tengfei Group not only paid for six aero engines worth tens of millions of dollars, but also paid only $6 million in consulting fees for this expert group to China.

This past will be similar to a joke in the future, but this also shows from another side that although Tengfei Group has entered the threshold of advanced aviation development, it is still far from entering the house.

There are many similar situations, and Tengfei Group is also stumbling along the way, but most of them can go smoothly after paying a "tuition", but when it comes to the application stage, Tengfei Group will make difficulties.

There is no second model in China that can adapt to WD-60ML models except for Yun-17.

Originally, the Northwest Aviation Plant intended to graft the WD-60ML onto the H-6, and then after several tests, it was found that the WD-60ML large-bypass ratio engine could not be stuffed into the engine compartment of the H-6 at all.

There is no large civil airliner of more than 80 tons in China, Tengfei Group itself has a plan in this regard, but it also stays on the drawings, not because it does not want to implement, but the supporting industrial chain is not complete, and Tengfei Group just can't do it if you want to.

No way, the production and manufacturing of large aircraft with a take-off weight of more than 80 tons is a new field, not to mention others, just the landing gear of this aircraft, the ordinary process can not support such a huge body, and can only use more than 10,000 tons of hydraulic section or hydraulic section to knead the blank like deep forging like dough.

There are very few such heavy equipment in China, and even if there are only a few of them, they are in the fields of shipbuilding, military industry, nuclear energy, etc., and the production capacity is not enough to support the production of this type of aircraft.

Of course, some people will say that McDonnell Douglas 80 and McDonnell Dalwell Douglas 90 are aircraft of this class, doesn't it mean that they have been localized?

It is localized, but this localization needs to be put in quotation marks, because most of the core spare parts of McDonnell Douglas of these two types of aircraft are provided by McDonnell Douglas, and the country is just used as an assembly base.

This includes the landing gear of both aircraft.

Of course, even if the landing gear is solved, if you want to complete the manufacture of large aircraft, there are still many shortcomings in China, for example, the composite materials used in the single-aisle wide-body passenger aircraft designed by Tengfei Group account for 35%, of which two cabin segments and foot wings need to be molded with carbon fiber composite materials at one time.

The problem is that Tengfei Group's idea is good, but there is no large-scale hot pressure irrigation of more than 10 meters in China and large-scale laser spraying equipment that can realize multi-level spraying and weaving carbon fiber.

Japan and the United States have such equipment, but the problem is that people don't sell it for a long time, and they don't even bother to do it for you, and the reason is very simple, can you Tengfei Group guarantee continuous procurement for half a year? If not, where is it cool, where to take it.

This is what the aviation industry often calls the ceiling of large aircraft.

Don't look at the same aircraft, but the one that can enter the field of large aircraft is the real entrance, the problem is that there are very few such companies and countries, do they not want to?

No, the threshold is too high, and the amount involved is too big, so you can't climb it at all.

Tengfei Group has naturally encountered this opaque ceiling, and is even more isolated than other similar enterprises, and it is no longer appropriate to go on at this time, so what should we do?

The Russian aviation industry led by Djokovic is visiting China in a magnificent way, since it is cooperation, naturally you old Maozi can't just make money, and the domestic side will not take advantage of anything, right?

At the very least, you have to let out some blood, otherwise those Davaris, Hala Shao, Ula ~~ or something will not be in vain!