On 12 December, Contini and Antonio arrived in Berlin and met Duhey again.

"Calais, you're late!" As soon as I met Du Hei, he didn't have a good face, "I said to give you a week, but you were late for 3 days, although Italians are notoriously late for their habits, but you are different from others, you will do great things in the future, I hope you have a little sense of time and discipline!" ”

Contini smiled slightly: "Teacher, although I arrived a few days late, it did not delay your work, I have completed the visit and exchange of the Bavarian aircraft factory, and also wrote the investigation report. ”

Seeing the few pieces of paper handed over by Contini, Du Heilen paused for a moment, and then reacted and said: "I hope you don't be perfunctory, I will accept it if you explain the lateness, but if you hang yourself in the research and investigation, I will ......."

"Teacher, since you recognize me as a student, you should have a minimum understanding of me, can't you evaluate it after reading the report?"

"Wait for me for a few minutes."

Antonio smiled, and sat down casually in disdain: The young master did go to visit the aircraft factory, because now the aircraft factory is part of BMW's business, but it is obvious that the young master is very interested in BMW's motorcycle business, but he sneers at the concept of aircraft manufacturing, he spends more time chatting with other people, as for what to talk about, I don't know, after all, he is busy with closing positions and transferring money, and it is impossible to keep an eye on it all the time.

Sure enough, after reading the report, Du Hei raised his eyebrows and asked in a surprised tone: "Do you think BMW has no future in the field of aircraft manufacturing in the next five years?" ”

"Yes." "This company was the largest aircraft factory in Bavaria (BFW) at the time of the last war, with a production capacity of 200 aircraft per month, and the end of the war completely changed all that. Orders disappeared, production capacity was idle, and more than 3,000 people became a great burden for the company, which began to lose money continuously from 1919. Last year, Italy-born Austrian financier Camilo Kastilloni bought a controlling stake in the company and renamed it BMW. Their focus is now on furniture and kitchen equipment, and it is said that they will also enter the motorcycle and automobile business, with aircraft manufacturing relatively rear......"

Contini's words are not fabricated, most of the fighters produced in World War I use wood as the main raw material, so BFW also has the most advanced timber factory, and now Germany is banned from equipping military aircraft, and the civil aviation market has not yet released its potential, so there is no way out for building aircraft in the short term, otherwise this company will not change hands. What's more, the company still stocked the raw materials to produce hundreds of aircraft after the war, and it seemed like a good idea to use the existing resources to produce furniture and kitchen equipment......

"It seems to you to be disgusted by building airplanes out of wood, but nowadays most airplanes are made of wood, you can't build airplanes, isn't it normal to make furniture and kitchen equipment out of wood?"

"I don't see the present, I look at the future, I had an in-depth conversation with a young aircraft designer, and he completely agreed with my understanding, only on some technical issues."

"Tell me about what you're talking about."

"First, the horsepower of aircraft engines will increase rapidly, this year's mainstream engine horsepower is still 200-250 horsepower, next year there will be 300-400 horsepower engines, he and I expect that by 1930 there will be more than 1000 horsepower mature products;

Second, two-wing or even three-wing aircraft will quickly become obsolete due to the increase in engine horsepower, and in the future, aircraft will be dominated by monoplanes, which means faster speed and better visibility;

Third, the material of the aircraft will quickly transition from the current wood and cloth to metal-based or even all-metal structures - not steel, but aluminum alloy and dura aluminum, which can allow the aircraft to obtain better performance and perform more dangerous maneuvers, such as dive bombing;

Fourth, aircraft equipment will be further upgraded, and what sealed cockpits, radio stations, and bombing sights will emerge and be equipped on aircraft. ”

Some of these views were quite close to his own, but he was not as optimistic as Contini had predicted, and he thought that it would take 20 years for this kind of change, and his students thought that in 10 years there would be a radical change.

He couldn't help but be interested, and asked, "What about your differences?" ”

"In the choice of mainstream aero engines in the future, he prefers liquid-cooled engines, which are compact in structure and have high power per unit weight; I think liquid cooling and air cooling have their own strengths, and they can't be wasted, and even in a sense, the air cooling that can be completed by liquid cooling can basically be completed, but the advantages of air cooling are irreplaceable by liquid cooling......"

"It's an interesting idea, I'll hear it in detail."

"In the simplest example, naval aviation needs air-cooled engines more...... In the fierce confrontation of war, the liquid-cooled engine is likely to be damaged by the enemy and the cooling system will crash, which is equivalent to death in the vast sea, while the air-cooled engine can barely fly back even if 1-2 cylinders are destroyed - the pilot is much more valuable than the aircraft; Replenishing coolant for liquid-cooled engines at sea is a hassle, and air cooling does not have such concerns; Finally, air-cooled engines are comparatively more fuel-efficient than liquid-cooled engines, which are good for supporting longer ranges. "For example, we in Italy need a single-engine fighter with a range of more than 1,500 kilometers after carrying an auxiliary fuel tank, which can take off from Sicily to Tripoli and then turn back!" Without the full protection of this kind of fighter, the bomber group that the teacher admired would be beaten down one by one. ”

"What nonsense are you talking about? When am I going to bomb Tripoli? ”

"You don't believe there will be such a day?"

"Uh......" Du Hei was speechless, although Libya is an Italian colony, but it has always been very uneasy, resistance one after another, it is said that the leader is very dissatisfied with the status quo, planning a big operation! Of course, he had listened to Contini's inferences, expecting that equipping such long-range fighters to attack Libya would be better that he was going to deal with the British Mediterranean Fleet and Malta!

The embarrassed Du Hei immediately changed the topic and asked: "This designer must be different from you at first sight, what is his name?" ”

"Willie Messerschmidt, five years older than me, is still a nobody, but I think he has a lot of potential."

"Don't you want to set up an aviation company, you can invite him to Italy, Italy has better development space than Germany, right? At least we can build military aircraft. ”

"Please, people don't want to do it for the time being, he wants to make a name for himself, I even raised your name teacher, he said that he must go to Italy to meet you if he has the opportunity, but he has no plans to come to Italy to play for the time being."

"Well, that's just to blame for him missing the opportunity...... I'm sorry! ”

Contini smiled: "I'm sorry too. ”

Duhey is kind words, but Contini is really sorry - Messerschmidt is the chief designer of the Bf-109 and one of the two aircraft designers of the Third Reich! (Another is Kurt Tanck, who designed the Fw-190 and is the same age as Messerschmidt, who has not yet graduated from college because he served in the Army during World War I.)

Speaking of this, Du Hei's face finally softened, this student seems to have done a lot of work, and it is even more rare that he did not stay on the surface to listen to the introduction, but went deep into the grassroots and workshop to see, which is much better than most young Italians.

Now he looks at Contini more and more pleasing to the eye, and said with a smile: "My book draws on a lot of your statements, and adds some latest information in Berlin, and learns more about academic trends and scientific and technological development prospects, indeed as you said, the radio detection device Mr. Marconi has talked about it when he went to the United States for study and exchange in the first half of this year, but it is not as clear and clear as you said, I think this thing may really come out in the next 10-15 years, and it will be a new interference and challenge to the seizure of air supremacy. So I've been thinking about how to deal with ......."

"I have a solution."

"You've got a way? You have a way to even shadow things? Let's hear about it. ”

"Two." Contini raised two fingers, "First, ultra-low-altitude flight, covert approach, compress the detected distance, and reduce the enemy's warning time - the earth is round, and the radio waves can only run in a straight line, when the flight altitude drops, affected by the curvature of the earth, the detection of radio waves will be blocked by the earth; Second, interference. Isn't it possible to detect objects in the air through reflection of radio waves? I simply let the planes carry all kinds of false targets and jammers, so that the enemy can't tell which is the real plane and which is the fake plane. ”

Duire looked at Contini like a monster, and finally had to admit that the two methods were convincing from a scientific point of view.

"Calais, can you put your ideas and theories in my book?"

"You are my teacher, and you have imparted all this knowledge, why not?" Contini smiled slyly, "But it's better to be vague, you don't want the British, the French, or the Germans, or the Russians to come to your door in this way, do you?" ”

"You kid really have a bad stomach, you don't look like a 19-year-old at all."

Contini laughed: Nonsense! I'm not 19 years old, I'm in my 40s! But there was an innocent look on his face: "Teacher, what are you talking about, why can't I understand a word?" Didn't you pass on this knowledge? Everyone knows that air supremacy is your theory, not mine, and it seems that my study of this theory is still too shallow. ”

Now even Antonio, who had been listening, couldn't help but laugh.