Not long after Liu Fei's engine was successfully tested, the military approached him, hoping to cooperate in the development of a new generation of primary teachers. lā

The new generation of training aircraft that the military hopes to see is a large training aircraft that uses the engine that Liu Fei has just successfully tested, although it is a two-seat version, but it needs to be equipped with a lot of new things that have been produced in recent years, and it is also necessary to reserve enough space for oil and upgrades.

The "Haiyan" training plane raised in the rabbit's house is already old, and the small engine with several hundred horsepower can no longer be satisfied, and the propeller is a two-bladed propeller with poor output, and the service life of this aircraft for more than 40 years should also be at its limit.

The open-top design also limits its maximum flight speed and maximum flight altitude, which is not in line with the practical design of modern aircraft. Today's planes are more likely to operate at high altitudes, and there are even fighters operating at ultra-high altitudes of 20,000 meters. These trainers can only be responsible for the initial training of students, and in the later stage, there is no way at all, because they cannot be supersonic or super-altitude.

In addition, the military also hopes to have a twin-engine bomber trainer, which can be used in the initial stage. Plug engine, and then the military means to gradually change the engine to a turboprop engine, so that the aircraft becomes a high-altitude trainer, which is another attribute.

Liu Fei said that the design of the single engine is expected to be finalized within two months, and the design of the double engine can be successfully manufactured within one year. The twin-engine design carries 10 to 16 people, and is expected to be finalized and manufactured within two years, which is suitable for the early pilot training of military jet bombers and civil and civil aircraft, which is a relatively versatile aircraft. If others say so, the military will definitely go up with a big mouth right away, but this is the Einzberen family, this is not an ordinary family. And.. When the national aviation industry was just starting, if it were not for the drawings and material technology of the Einzberen family, the aviation industry of the rabbit family would not have developed into what it is now. After all, at that time, a total of .. And.. China has led the world for many years by relying on these technologies......

Although Liu Fei is not very optimistic about only producing this kind of light and small aircraft, but now due to the situation, Liu Fei can only produce such small aircraft, and the others cannot be produced. This made Liu Fei a little painful, because the profits of this kind of small aircraft are really small, and only the aircraft that touches the word "turbine" can be regarded as a profitable aircraft. Turboprops, for example, are a more lucrative project because they are fast and fuel-efficient, making them suitable for small family travel aircraft......

As for why the military did not spray directly .. A large-scale weapon of destruction such as a shooting fighter, Liu Fei still feels that he understands a little. After all, the military industry is a country. The foundation of the country, if it is easily controlled by foreigners, then it can only be hehe.

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Out of the need for his own image, Liu Fei immediately began to lead his "design team" to start designing new aircraft, and even adopted a lot of his own original technology on the new aircraft.

Liu Fei's strategic purpose is to be able to get a large number of orders to support his follow-up research and development, after all, the cost of a large aircraft is definitely more than 50 million US dollars, and the little money he gets is not enough to squander it. These funds can't even make the engine for the prototype, you must know that aviation, aerospace and navigation are all money-burning jobs.

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Since this is something that the military needs, then Liu Fei will calmly do it according to the needs of the military, anyway, the customer is God, so Liu Fei just needs to do what God needs, there is absolutely nothing wrong with it.

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The test flight of the new aircraft takes a long time, and because this is a training aircraft, it must be a group of novices flying these aircraft, so the handling performance of these aircraft has become a top priority. If the trainer cannot easily change the tailspin state, it cannot be a really good trainer.

Fighter pilot training can be very high-energy, and even the simplest fighter jet needs to do some big maneuvers. This kind of action is difficult for students to find a good time, it is easy to let these unlucky students fall into a tailspin state, this is the time for the instructor to appear, the instructor needs to change the tailspin as soon as possible, and then meet the pilot how to overcome the tailspin.

Considering all kinds of needs, Liu Fei believes that his aircraft must be designed to be as strong and durable as possible, even if it is 10G, there will be no problem, and it is also loaded with a well-configured on-board computer, which will take the initiative to restore the flight attitude of the aircraft when it is thought that the members of the plane will enter a dangerous state due to overload, and if necessary, can directly control the aircraft to land at the airport.

Although this design was criticized by the military, the military still accepted this design, anyway, the training aircraft could not have any classified documents in it, and there was not even a data link. In this case, even if the on-board computer is hacked, there is no problem~~~

Liu Fei quickly completed the production of prototypes, and many aircraft flew together to complete flight tests, and then began the acceptance of the military.

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The military's acceptance is very strict, but for Liu Fei, there is nothing rude about it.

After all, this is a training plane that is related to the life safety of old pilots and pilot seed members, so I have to be very careful.

If something happens to a fighter, only a trained pilot will be lost, and of course, a well-trained pilot must be an experienced pilot, then there is a high probability of successfully parachuting out.

But flight students don't have this skill, and flight instructors need to protect their students, and they can't choose to parachute!

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In fact, the final result was very satisfactory to Liu Fei, and the military said that the quality of this batch of training aircraft was very good, and if it were not for the fact that the carrying capacity was too small, the military would even be willing to buy a batch for small-scale tactical transport activities or ground support operations.

Liu Fei expressed strong concern about this, and repeatedly stressed that the Einzberen family has sufficient capacity to develop aircraft with a larger load......

So the two sides reached a consensus on various cooperation matters, and decided to continue to enter the tactical transport aircraft industry, and initially prepared to produce a six-engine cargo aircraft, with a carrying capacity of about 30 to 40 tons, in fact, it is definitely a value-for-money tactical transport aircraft.

Because of such a large cargo capacity and the cargo density limited by the military, this aircraft has become equivalent to a strategic transport aircraft.

But Liu Fei understood the military's demands and offered his own plan — six turboprop engines modified from 4,500-horsepower turboshaft engines or four 6,000-horsepower turboprop engines with small-swept wings and a huge belly.

In short, it is very much in line with the appetite of the military.