This long-distance airlift is a huge challenge for Liu Yun and his air force cadets, who have to fly to Wuhan every day, which has a great role in promoting people's endurance training and technical training.

I don't dare to say that all of them are qualified elites, but after Liu Yun's personal assessment, one-third of them still completely meet the standard, and the other two-thirds still need proper rectification and training, but he is already very satisfied with the fact that he can obtain more than 30 qualified pilots at a time.

Of course, compared to the more than 1,000 Air Force cadets, only about 30 qualified, it is really a bit rare, of course, in Liu Yun's view, the rest of the cadets have no chance, so as long as these cadets are given enough opportunities, it is only a matter of time before they become official pilots.

Let all the air force cadets go to drive transport planes and bombers, Liu Yun himself did not agree, before he did not dare to let the cadets test flight, mainly because of the lack of fuel, now that the Fucheng railway has been built, the oil can be sent through the ship reuse railway, and the flight training has begun.

Of course, before the flight training, the instructor will strictly review the qualifications of the trainees, and those who are not qualified will have to continue training on the ground, and if they are not qualified, they will have to be ground personnel, or transferred to other branches of the military, but Liu Yun hopes to get a trainer first, and then talk about flight training.

"Trainer aircraft", Liu Yun has only heard of, and even familiar with it, remember that in the 21st century, Huaxia often launched various types of trainer aircraft, exported to many countries and places, but what is a trainer aircraft, how to build a trainer aircraft, he has no bottom at all, German experts are the only hope.

Seeing Mr. Willy Messerschmidt, Liu Yun hurriedly regarded himself as a student, hoping that Mr. Yang could teach him the ability to manufacture a training aircraft, and the professor was also surprised, thinking that he wanted the most advanced fighter plane, and had already sorted out the BF109 fighter information, but the training aircraft was the only one he did not prepare.

However, the customer is God, Berlin sent an expert group to China, naturally to serve the allies, the intentions of the allies are their guide, Messerschmidt thought clearly, and then asked Liu Yun seriously, "The trainer plane is not as simple as an airplane, and it is not within the scope of the scheduled cooperation."

"Let's put it this way, we only brought the information of the BF109 fighter and the Ju87 bomber with the approval of the head of state, and also brought some information on the pre-developed aircraft, such as the BF110 heavy fighter with two engines and three seats, and the rocket propulsion aircraft codenamed Comet."

When Messerschmitt said this, he glanced at Liu Yun and said helplessly, "I just didn't expect what kind of training aircraft you would want, this is a huge system project, which can be divided into primary, intermediate and advanced according to the level, and can be divided into the reconnaissance type, the transport type and the bombing type according to the type."

A training aircraft is so complicated, Liu Yun also seems to understand it, and he can't take into account the long-coveted rocket engine, and at this time he really understands why the Chinese Air Force fought so badly in the War of Resistance Against Japan, in addition to the industrial base, it is because of the lack of training aircraft.

Professor Messerschmidt, who is a master of aircraft research and development, and things like training planes, may be very troublesome to others, but as long as he knows the basic principles, he can make them immediately, and the reason why he is so pretentious now is that fools know that this guy wants benefits.

The reason why an expert is an expert is that he has expertise in a certain aspect, maybe Liu Yun can solve the problem of the trainer through his own slow exploration, but it will waste too much time, but every day of delay means that there is one less pilot, so he has to accept the blackmail of the expert.

Of course, Liu Yun didn't count on Falkenhausen, this guy was German after all, let him help say what his personal position was, so he asked with a wry smile, "Professor, don't go around the corner, you are an aircraft master, or let's just say it, what conditions are needed to teach the trainer aircraft."

Messerschmidt was also stunned by such an unsubtle question, but this long-lived battlefield was also thick-skinned, and such a gentle cross-examination was simply a drizzle, so he said with some ridicule, "Dear Liu, I am not greedy at all, why don't I give 500 tons of gold."

"You're really not greedy at all", Liu Yun really even blew up in his lungs, wait, he suddenly remembered something, I know, this guy is aiming at his high technology, so his voice changed, and he said lightly, "Professor, I'm disappointed, I don't have what you want here."

As soon as he finished speaking, Liu Yun was ready to leave, how could Messerschmidt give up, hurriedly grabbed him, and said with a smile, "Mr. Liu, you are a smart person, you are the first person to take the initiative to ask for a trainer, it can train pilots on a large scale, and the price can be renegotiated."

Seeing that Liu Yun didn't care, and he was very determined, Professor Messer also knew that if he didn't highlight the real thing, this guy might really run away, so wouldn't it be a trip to Huaxia for nothing, so he had to let go of his hand and said a little depressedly, "I'll tell you about the trainer, what price do you see it's worth."

Trainer aircraft, as the name suggests, is an aircraft for training pilots, many countries are still exploring, only Britain, France, Germany, the United States and the Soviet Union have a mature trainer system, such as Japan and Italy and other countries, it is only in the embryonic form of grassroots, it is not surprising that the professor wants to sell at a high price.

Moreover, many countries have only set up two kinds of training aircraft, primary and advanced, the primary mainly allows flight students to learn the minimum take-off, landing, visual navigation and queue flight, as well as air judgment direction, etc., while the senior requires pilots to fly in bad weather or specific air conditions, such as wind and rain flight and night flight, in short, it is a challenging flight training subject.

However, Professor Messerschmidt does not think so, he believes that the purpose of the primary training aircraft is to train students to become reserve pilots, the intermediate level is to train regular pilots, and the senior level is to train senior pilots, and these three are interlocking systematic flight training processes.

Experts are experts, talking about his professional field, it is simply a god-like existence, a few simple words, so that Liu Yun has an intuitive understanding of the trainer aircraft, understand how European and American pilots train, and asked a little anxiously, "Is there any classic trainer aircraft in Germany?" ”

Messerschmitt did not answer positively, but explained from a different angle, "There are many aircraft factories in Germany, and flight enthusiasts are more extensive and common, and they are no strangers to aircraft, so there is no need for primary training aircraft at all, as far as I know, there are tens of thousands of civil aircraft in China."

Liu Yun was also taken aback, no wonder during World War II, there were a lot of ace pilots in Germany, and there were several of them shot down by two or three hundred, and it turned out that the general quality of the people was relatively high, and according to the requirements of senior pilots, the flight time was only 3,000 hours, and they were afraid that they had already exceeded the standard.

The implicit meaning of Messerschmidt, Liu Yun also understood, for the time being, Germany does not need a trainer aircraft at all, those simple and practical small aircraft in the private sector are the best trainer aircraft, if Huaxia needs, he only has a few on-site design, and the fee is naturally high.

Just when Liu Yun thought that Germany did not have a trainer aircraft, Professor Messerschmidt told him that the training aircraft currently used by the Luftwaffe is the previous model of the BF109 fighter, the "Typhoon" BF108 fighter, is a two-seat sports aircraft, fully movable front and rear flaps, simple and practical to operate.

Liu Yun couldn't help but be overjoyed, and was about to open his mouth to buy the information of this aircraft, but Professor Messerschmidt told him that this aircraft is not suitable for Chinese use, because it was born from sports competition aircraft, dexterous and changeable, extremely fast, although it is a two-seater aircraft, it is a typical high-level training aircraft.

Liu Yun couldn't help but be stunned, yes, if you can fly this aircraft students, you can directly fly the fighter, Huaxia's current main fighter, Hawker III. is known for its flexibility, slightly lacking in flight speed, compared with the BF108 fighter, the comprehensive performance is still worse.

By the way, Professor Messerschmidt is an aircraft design master, or the president of the Bavarian aircraft factory, ask him to redesign a model, the cost is according to the German charging standard, Liu Yun hurriedly asked, "Professor, please design on site, how long does it take?" ”

Messerschmidt smiled slightly, neither refused nor agreed, but just asked Liu Yun a question, "Dear Liu, may I ask what model your country plans to adopt in the future?" I was afraid that Commander Liu would not understand, so he further explained, "For example, what are the main fighters, bombers and transport planes."

Now Liu Yunzhen understood, it is not just a random aircraft can be used as a training aircraft, combined with BF108 and BF109, it is fully understood, this type of aircraft is not a simple training pilot, but has a strong targeting, and at the same time, as the level of the trainer rises, the higher the degree of fighter simulation.

Liu Yun remembers that in the 21st century, many regions are equipped with American F16 fighters, but often they can't buy a suitable trainer, so they have to use the F16 as a trainer.

Liu Yun also began to worry, what kind of fighter was used during the Anti-Japanese War, the current Hawker III. fighter, the equipment has been backward, the only advantage is that the price is cheap, in 1937 just after the outbreak of the all-out war of resistance, it is completely behind the Japanese fighters, for the later Zero fighter is simply incomprehensible.

The problem is that the Zero type did not come out until 1940, and the type of aircraft that could effectively restrain it did not appear until the end of World War II, but the "twin demon" P38 fighter could also compete with it, and the time it came out was 1939.

However, the type of aircraft that Liu Yun can choose is only the Flying Bear I. fighter, which happens to be a twin-engine, whether it can compete with the Japanese Zero, he doesn't even have a bottom, but he still has a way, which is to imitate the Zero fighter, and strive to overwhelm the original with better performance.

In the end, Liu Yun decided to consult experts, in the name of the pre-research model, part of the data of the Zero fighter, revealed to Professor Messerschmidt, using a star engine, about 1,500 horsepower, 1.68 tons of weight, 10,000 meters of ceiling, and a maximum speed of 580 kilometers per hour.

Hearing these data, Messerschmitt was already stupid, and after a little calculation in his mind, he came up with a rough hypothetical data, and concluded that this kind of fighter, even if it uses the latest aluminum alloy, is still a thin-skinned and explosive fighter, which is equivalent to sacrificing the safety of the pilot in exchange for a local maneuverability.

Whether it is cost-effective or not, Messerschmitt believes that this is a matter of opinion, but no matter how strong the maneuverability is, it cannot withstand the enemy's dive attack, taking the BF109 fighter as an example, once it dives, the speed is close to 700 kilometers per hour, as long as it hits once, the fighter will be destroyed and killed.