Professor Schmidt, sure enough, has real skills, relying only on a few basic data, the performance of the Zero fighter is not far from ten, Liu Yun is too lazy to spare the circle, and goes straight to the topic, "Judging from the development trend of aircraft, what should I do if I encounter this kind of fighter?" ”

Messerschmitt also understood, and pointed in the direction of Japan with his finger, Liu Yun nodded very entangledly, he knew that he couldn't hide it from real professionals, but the professor gasped, how to deal with this kind of fighter, he didn't have any confidence, this is an epoch-making product.

The German professor closed his eyes and simulated this extreme fighter from his professional perspective, from Germany's new BF109 fighter, to the British Spitfire, and then to the current Hawker fighter in China.

The Zero fighter is thin and explosive, provided that you can fight it, hovering and fighting at low and medium altitudes, it has been flexible to the extreme, and the general fighter has no fun with it at all, so use the BF109 fighter to deal with it, the problem is that the time in the air is not as long as it, if one or two dives, can not achieve results, running quickly is the only choice, otherwise just wait to be beaten to die.

Messerschmitt quickly opened his eyes and said to Liu Yun very cautiously, "This aircraft is too extreme for ordinary pilots to fly, if I guess correctly, it can't be manufactured in the short term due to material problems, and when will it be mass-produced?" ”

"About 1939, the premise is that the development of material science and technology is still slow", Liu Yun did not have to hide the need, and told the German professor a little bit about the situation in another time and space, everyone knows that the development of science has a great chance of breaking through, and no one can predict when it will break through.

Messerschmidt was also a dignified, this time was neither early nor too late, it happened to be the scheduled time for Germany to start the war, and he had dealings with the Nazi high-ranking officials, such as Goebbels and Goering, and he also knew some little-known secrets, and he could guess the timetable of the war.

At the beginning of 1936, Japan's relations with Germany were very ordinary, far less popular than China's, and there was no Axis power, so it is not surprising that Japan formed an alliance with Britain and France to deal with Germany together, and Professor Schmidt was still very concerned about the fighter that could threaten the BF109.

Professor Schmidt has calculated the final result, even if the BF109 continues to improve, when encountering this fighter, the chance of winning is only fifty percent, if the actual threat is still on the Spitfire, it is indeed necessary to find a way to confront it, and it is the best choice to use Huaxia for experiments.

The German professor told Liu Yun that there are three ways to solve this fighter: First, "master Yi with long skills to control the enemy", what aircraft they build, what kind of aircraft China also builds, as long as the performance is about the same, if they continue to fight for a long time, each other's losses will be normally distributed, that is, five or five open.

Liu Yun also smiled a little wryly, it is really a good way, Huaxia has a population of 40,000, even if it is tied to one, the Japanese devils have to cry to death, but deliberately sending others to death really violates his own principles of life, not to mention that if you talk about high-quality population alone, Huaxia can't fight Japan.

Professor Messerschmidt had to come up with the second way, which was to equip rocket-driven fighters, well, too mouthful, simply put, jet fighters, but in the early days of World War II, Germany defined it like this, such as rocket engines and rocket fighters.

Liu Yun's face is about to become a bitter melon, these Germans are too lacking in morality, isn't this sincere to harm people, jet fighters are tall, but unfortunately they are still in secret conception, and they can really be used in actual combat, until after 1944, the Me262 fighter produced by the Messerschmitt company.

Your sister, when the jet comes out, World War II is almost over, the Zero fighter was still a hair at that time, and Liu Yun was just slandering, so he had to ask the professor with a smile and teach the third way, Messerschmidt was also a little helpless, and I don't know if this guy really understands or fakes.

The third is the combination of high and low, well, it is also Germany's current high-end move, with BF109 as a low-end fighter, as light and fast as a light cavalry, specializing in cleaning up small flies, while BF110 is a high-end fighter, like a heavy cavalry, thick and powerful, specializing in solving the enemy's main force.

What is the BF110, it is a three-seat single-wing twin-engine heavy fighter, with two machine guns, six aviation machine guns, two engines with a combined output of 2200 horsepower, a maximum speed of 548 kilometers per hour, a ceiling of 13,000 meters, a maximum range of 2,800 kilometers, and strengthened armor protection.

In addition, this fighter is indeed very heavy, with an empty weight of 5.15 tons and a maximum take-off weight of 6.75 tons.

Liu Yun was moved in his heart, and the Flying Bear I fighter, there is a great similarity, that is, the firepower and armor are slightly worse, but the Flying Bear also has a lot of room for improvement, judging from the surface data, only the maneuverability is slightly better, but I don't know who wins and who loses in actual combat situations.

As for the information of BF109 and BF110, they were all brought by Professor Schmidt and were about to be sold to Commander Liu, but the real flight data is impossible to bring, most of them are idealized design drawings, and in the end, whether they can be manufactured depends on Liu Yun himself.

To give a simple example, when Liu Yun and the Germans jointly researched a new tank engine, the idealized data was 800 horsepower, in fact, except for the ant robot, which can be manufactured up to the standard, neither the Hanyang Arsenal nor the German Arsenal can achieve this performance.

Therefore, in the design and manufacture of the ordnance industry, there is always a contradiction between idealization and actual data, not to mention that Liu Yun has become a legend in the German ordnance industry, and in the eyes of many German experts, what they can't do by themselves does not mean that Commander Liu in western Sichuan can't do it.

Otherwise, Hitler was not a fool, why did he give a flying saucer to Liu Yun for nothing, not because he had not taken a fancy to this guy's miraculous ability, and the reason why Professor Messerschmidt, who had a lot of opportunities, personally came to China to exchange work and sell rocket-propelled planes was actually based on this idea.

Through the powerful function of the brain, the parameters of BF109 and BF110 were quickly collected, as for the future Zero fighter, I had to ask Professor Schmidt to think of it, even if it can't be made immediately, but if you want to build an idealized aircraft model, it's still a piece of cake.

Liu Yun is not a grande, there is no intention of pulling out a dime, so the Flying Bear fighter series is completely open to Professor Schmidt, and asks him to help improve by the way, as long as he is sincere in doing things, everything is good to say in terms of remuneration, to gold for gold, and technology for technology.

Although Professor Messerschmitt has become a well-known German entrepreneur, in the final analysis, he is still an expert in aircraft research and development, and as soon as he sees a new or unknown aircraft, he automatically enters a semi-crazy state, and it no longer matters to him how Germany is doing and how it is paid.

In just three days, Professor Schmidt made a model of Zero Battle, Liu Yun just finished collecting data, but found that the professor's brows were tightly locked, staring at the model of the plane, as if thoughtful, and was about to ask, only to see the professor clapping his hands, and he already had a new idea.

"Dr. Liu, I remember that you studied railway engineering in the United States, but since you are a doctorate, you should be able to touch the bypass, I don't know if you have heard of wind tunnel experiments, why don't we work together to build a new wind tunnel group, once the construction is successful, what is the difficulty of conducting aircraft research."

Wind tunnel, wind tunnel experiment, Liu Yun is really surprised, there is such a good thing, he doesn't understand the wind tunnel experiment, but he can't stand the propaganda of the 21st century, remember that only the world's powerful countries can develop their own aircraft, and a large wind tunnel is a prerequisite for research and development.

Seeing that Dr. Liu was so knowledgeable, Professor Schmidt was also depressed, and he couldn't understand whether he really understood this guy for a while, so he pulled out his gold-wire glasses and asked a little tentatively, "Dr. Liu, which one do you think is better to build, is it to use full-size or reduce size?" ”

Liu Yun was also stunned, and this exquisiteness, fortunately, this guy is more realistic, there is no habit of pretending to understand, but as a disciple, he served tea and water, and asked Professor Schmidt for advice, clearly saying that he was like a mountain, and he didn't know much about the wind tunnel, and asked Mr. Yang to give advice.

For such studious students, Professor Schmidt is still quite satisfied, not to mention that it is still a good student like Liu Yun, who is rich and powerful, and is even more kind, so he will talk about the ins and outs of the wind tunnel, and roughly talk about it, the wind tunnel can be divided into two categories: natural formation and artificial creation.

But the real use of aircraft research, or before and after the First World War, pilots engaged in research, are using wind surface calculations, to determine the overall shape of the aircraft, as the speed of the aircraft is getting faster and faster, if the shape is slightly improper, it will affect the flight speed and range.

Therefore, designers in Europe and the United States and other countries have gradually paid attention to wind tunnel experiments, which are simply to simulate the situation of aircraft flying in the air through artificial air blowing in a closed environment, so as to screen various aviation materials, test engine power, and body selection.

However, the earliest idea of the wind tunnel was from the test pool of the Navy warship, which mostly used natural tuyeres during the experiment, which was very troublesome to control, so it was changed to artificial blowing and pressurization, which was mainly flat pipes, and then had to reduce the size of the wind tunnel due to the problem of energy consumption.

Liu Yun didn't bother to ask too much, only asked a little, what is the difference between the two, Professor Schmidt doesn't like to talk around much, so he simply solves it in one sentence, "full size, troublesome to build, extremely energy-consuming work, about one city of electricity, but the most conducive to aircraft testing."

The most important thing in western Sichuan is electricity, the six units of the hydropower station have only opened half of them so far, even if they add three cement plants, it is more than enough, not to mention that Liu Yun has been building a new power station, this time not only to be repaired in western Sichuan County, but also in Maozhou City, electricity is not a big problem.

Then build a full-size one, Liu Yun thought about it again, it still didn't feel right, because with the development of the aircraft, the body size will become larger and larger, so he asked Professor Schmidt with a sneer, can he build three, preferably one large and two small, and the big one is a full-size wind tunnel.

The remaining two will be scaled to a full-scale wind tunnel, one is reduced to one-fifth, and the other is reduced to one-tenth, not only can you do some small experiments frequently, but with the development of the aircraft, it is not realistic to do full-size, and now it is better to do it in one step.