From the perspective of a professional like him, if Li Le were not the head of state, there would be no problem at all if he went to the aircraft company to apply for a deputy chief engineer. Pen & Fun & Pavilion www.biquge.info

Whether it is professionalism, the overall planning, or even the speculation of aircraft development, and the macro aircraft design concept, even make him ashamed as a designer.

After a period of flickering by Li Le, Tan Ke has an in-depth understanding of what kind of improvement hidden dangers will be left in the future by the new technology used in the DB series engine, which looks very advanced in front of him.

And this Führer understands technology better than Tan Ke imagined, and can even be said to be proficient in technology.

At least technical components such as the continuously variable supercharger can be readily available, and it is not just casual talk at all, and it is definitely a category of understanding and mastery.

What surprised Tan Ke even more was that the ME-109E fighter, which looked elaborately crafted, seemed to be a little too calculating in the eyes of the Führer.

On the contrary, the Führer was more friendly to the FW-190 fighter, which was obviously somewhat rough and arrogant.

As a World War II weapons fan, Li Le has knowledge of various military weapons of this period. He knew that in the 1940's, the DB engine was relatively superior, mainly due to the fact that it used a lot of fashionable technology.

During this period, German aircraft had better performance at high altitudes and better maneuverability, while compared to the British Merlin engines with average performance and conservative design, they were simply antique.

However, Li Le also knew that under the current conditions, there were two most concise ways to effectively increase engine power: increase engine displacement and increase intake pressure.

The former is very simple, but it has great limitations, such as the DB603A, which is simply enlarged from the DB601, has a displacement of about 44.5L from 33L, weighs up to 900 kg, and has a take-off power of only 1750 horsepower, which is obviously very inefficient.

In contrast, increasing the intake pressure is the fundamental solution. Increasing the intake air pressure is simple, but in fact it faces two difficulties:

The first reason is that the supercharger needs to compress the air as much as possible when the high air pressure is very low, but the single-stage centrifugal supercharger has a speed ceiling, that is, the power is consumed in vain after the speed reaches a certain value, and the inlet air pressure cannot be further increased. On the other hand, the supercharger diameter cannot be increased indefinitely. As a result, this creates a bottleneck in the high-altitude air intake pressure.

Second, at low altitudes, the supercharger is generally able to provide sufficient pressure, however, we all know that compressed air will cause a sharp rise in air temperature and lead to deflagration, which forms a bottleneck for deflagration at low altitudes.

In order to solve the contradiction between these two aspects, there are several basic technical means: the use of two-stage supercharger to break through the bottleneck of high-altitude air intake; Try to cool down the compressed air before it enters the cylinder to avoid deflagration; Use higher grade fuel to violently break through the bottleneck of low-altitude deflagration.

In fact, later the British did exactly what they did on the engines of the Spitfires.

Of course, the German DB engine technicians also know the effectiveness of these means, but these measures are difficult to apply to the DB engine:

The first reason is the technical reasons of the equipment itself, such as the deadly shaft gun.

It squeezed out the precious space that would otherwise be used to lay out the engine, but this was only a secondary reason.

The root cause lies in two other points:

The supercharger of the DB engine is a continuously variable speed supercharger, which is inconvenient to set up a 2-stage supercharger, and the designers of the DB engine are reluctant to abandon the traditional advantage of continuously variable speed.

Secondly, due to the use of fuel direct injection technology, the spark plug is easy to accumulate carbon under high intake pressure conditions, and it is reluctant to give up direct injection, and there is no advanced carburetor technology accumulation.

The rest are the reasons outside the engine:

First of all, the basic technical means of air intake cooling is the use of intercooler, but the intercooler is quite large and not lightweight, which is difficult to use in a small aircraft like ME-109E.

Secondly, there was no effective solution to the high-grade fuel oil until the Libyan oil fields were established.

In fact, technical problems can be avoided by other means, if the trouble cannot be solved, learn from the Soviets to engage in clear high-altitude and low-altitude fighters, such as the MiG-3 and Yak-3, can also make do with survival, but the Third Reich, which was already short of materials, preferred both high and low altitudes......

What is the way to describe it other than a sad obsessive-compulsive person?

Li Le knew that the DB engine was also trying to improve it later, and he also tried two-stage supercharging, such as the failed DB628, but he did not set up an intercooler, and tried to take into account both high and low altitudes, which was a very reasonable tragedy.

The Germans seem to be very fond of generosity, but forget their preferences where they really should.

For example, the general concept of weapon parts and ammunition has always been ignored by German designers.

However, in terms of the main function of the weapon system, the requirements of the German military suddenly insisted on universality.

For example, fighters should take into account both high and low altitudes, and for example, it is even more desperate: let medium-range bombers take into account dive bombing......

These insistences forced to death a lot of "requirements" for the original simple weapon design, and finally forced the German mechanical designers to play the black technology to perfection, but wasted the most precious time.

Just imagine, if you don't waste so much precious time working on a lot of useless designs, maybe Germany will really give birth to a lot of weapons comparable to the classic Allied weapons.

At the very least, it wasn't too difficult for the German engineers who could cram four engines into two engine compartments to design a bomber comparable to the B-17.

The topic is back to the sad DB series of engines - in the end, the engine used in the ME-109 in service was a modified version of the DB 605.

In fact, there is no essential difference between DB605 and DB601, the main difference is that the displacement is slightly increased, and the cylinder compression ratio is slightly increased...... Added two fancy gadgets, MW50 and GM1.

Increasing the displacement is obviously a thankless move, and the real effect is the MW50 and GM1, the two black technology plug-ins.

MW50 avoids deflagration and acts like an intercooler, while GM1 increases the amount of oxygen entering the cylinder and acts like a two-stage pressurization......

Unfortunately, the German engineers who tried to use these two fancy gadgets to make DB both high and low altitudes once again lost more than they gained.

Although the data of the DB engine is okay when using the MW50, the MW50 can only be used for a maximum of 20 minutes, which is a man's knowledge that 20 minutes can sometimes be embarrassing......

After listening to the "magic sound" of Yuan Xiansheng for an hour, Tan Ke decided to firmly follow the Führer's side, study hard and work hard for the construction of the Third Reich......

Even at the Führer's suggestion, Tan Ke made his own suggestion: "My Führer, I think you should hold a brand new conference on aircraft development. ”

"And personally chaired this conference to point out the way for the future of Imperial Aero Engines, as well as aircraft design and manufacturing."

"Your understanding and knowledge of aircraft and the engines they use surpasses that of engineers in most specialized fields, and I myself have benefited greatly from this conversation."

"I will support you and start the design of the new aircraft immediately. My Führer! When Tan Ke left, he still had a look of adoration on his face.

It's obviously much easier to fool technologists than politicians, at least you can come up with some dry goods, and as long as you convince them, you will get them a corresponding degree of attention.

In other words, when they find that they can't fool you with their technology, they will treat you as an understanding person and dare not fool you easily.

Closing the door, Li Le glanced at the clock hanging on the wall, only to realize that it was already midnight. He yawned and ended the day's busy day.

It is obviously a tiring job to intrigue with these celebrities in front of you, or to do something that the Führer will not do while trying to pretend to be a Führer.

He stretched, then called Bowman, the secretary, and listened to the arrangements for tomorrow, and made additional arrangements for some meetings of his own interest, and then went back to his bedroom.

Looking at the ceiling in front of him, Li Le was still full of unreal illusions, he didn't know if what he was doing would change the future, and he didn't know if he would be caught and hanged tomorrow.

There are still too many things he wants to improve, in fact, Germany's seemingly rebellious industrial technology system during World War II seems to be mostly a maverick with a crooked technology tree.

German engineers have either come up with immature technologies that will be decades later, or they have chosen a seemingly flat path of no return and are going further and further.

You say that during World War II, Germany's industrial system was not good? Actually, it's very good. When the Germans played with tank artillery double diameter, they were able to make 71 times the length of the sky.

This is why Germany's industrial strength can barely be supported, and if it changes to another country, it has long been forced to death by its own design engineers.

Similarly, Li Le, who was lying in bed, realized that his dream of improving German science and technology was really a huge and desperate system project.

People say that the Tiger tank is an industrial disaster, but how to improve it is a matter of opinion.

Similarly, from the pistols and rifles used by soldiers to huge airplanes and tanks...... With so many weapons and systems that need to be improved, how could it be that he, Li Le, could do it alone?