After the separation, small motor vehicle engines, as well as large trains or large mechanical engines, can be said to be strong, they are the largest scientific research group, the whole number of people have exceeded the original internal combustion engine research institute, only light engines, they have the least personnel, only from the internal combustion engine research institute to transfer some people, and some materials, polymer experts.

It seems that this aircraft engine is abandoned, which also makes the aircraft research institute a little frustrated, what they don't know is that among all three projects, the most high hopes, and the highest degree of future technology, is the aircraft engine.

There is no other reason, this is the industrial flower of the future era, even at the beginning of the 20th century, World War I and World War II, these two technologies are not simple, in addition to sufficient kinetic energy, there is also a very important point, that is, weight.

In train engines, measured in tons, motor vehicle engines measured in kilograms, and aircraft engines, sometimes, a few grams less, would be a huge improvement.

It's a pity that this is a matter of the future, and the aircraft is the icing on the cake for the current Dinghai Navy, the technology is too high, and the requirements are too high, but it has no substantive effect.

In the 21st century, with the development of the automobile industry, especially the development of light vehicles, weight reduction has also become a key to ordinary automobile engines.

But this weight reduction is not the mainstream, and even some small motor vehicles in later generations, but also to win with weight and power, in all the areas of weight reduction, aircraft is the most important one, especially fighter jets, may weigh a kilogram, for a fighter engine, is several grades of difference, thrust-to-weight ratio, as well as the derived thrust and thrust engine, its various performance, the difference is huge.

Zhao Xin, in fact, long before the birth of the aircraft, has been in the Dinghai Navy, in all aspects of the performance of the aircraft, a certain amount of understanding, there are also some foundations, this foundation, because of the internal combustion engine, can not promote the production of aircraft for the time being.

Now that the internal combustion engine is completed, one of the biggest hurdles in the development of the aircraft has been crossed, and the next step is to continuously increase the performance of the internal combustion engine and accumulate various technologies on the aircraft.

For the aircraft, first of all, the power is high, and then the weight is light, and the rest is not important, even if it is a simple one with a low safety factor, as long as the problem of flying into the sky is solved, it can be equipped on the aircraft.

In the original history, until the middle and late stages of World War I, there was the power of the country, invested in the study of aircraft, before that, more than ten or twenty years, airplanes are generally hobbyist toys, this from the first airplane, the Wright brothers invented, they just on a car engine, carried out simple processing, got a certain amount of wood, and other simple processing, on the airplane made.

Perhaps, in terms of science and technology, there is still a certain gap between the current Dinghai Navy and the United States at the beginning of the 20th century, and this gap is not as big as imagined.

The development of all aspects of the navy is uneven, some are high, some are low, but under the integration of Zhao Xin, in many aspects, it has already had a considerable degree of gain, and these aspects, if all of them are superimposed, for the aircraft, it is a strength.

For example, materials, whether it is steel materials, or polymer materials, or even some coatings, these are not available in the world at the beginning of the 20th century, the internal combustion engine is just made, and all aspects are not perfect, but there are already a lot of good places, the most important thing is that Zhao Xin will organize personnel to study some basic theories of aircraft lift-off.

For example, according to these things proposed by Zhao Xin, weight reduction, using aluminum alloy, using polymer composite materials, replacing the original less important materials in the engine, reducing the weight of the aircraft, this point, until the World War II period, was slowly used in aircraft manufacturing, before that, there was no at all.

There are also some flight theories, for example, the hollow layout of the aircraft, perhaps, researchers will consider which layout is better, but which layout has more aerodynamic standards and stronger focus, which has not been until the birth of the aircraft for many years, and even entered the military sequence, this began to appear.

With the help of Zhao Xin's forward-looking vision, even at the moment when the aircraft was not born, it has noticed this, and even opened up an aircraft research institute and a flight engine research institute specifically for the aircraft, and invested a lot of money and manpower and material resources.

For the subdivision of the internal combustion engine, this is also in the early days of the emergence of the internal combustion engine, has not done anything, Zhao Xin for the future, very understanding, directly at the beginning, on the direct subdivision, which is conducive to the development of the engine, each project, can be based on the internal combustion engine, just consider the development direction of the problem, to make a more transferable, more refined engine.

In the middle, perhaps a breakthrough in one link can be used in various fields as a whole in the field of internal combustion engines, and it can also be quickly used in various other fields.

Before, because of the internal combustion engine research institute, there were other important tasks, at that time I was very disappointed, I had to go to the prototype aircraft research institute again, after getting the news of the establishment of the aircraft engine research institute, I was very excited, immediately came over for joint research and development.

The aircraft must refer to the aircraft, this point, the aircraft research institute has a certain accumulation, these accumulations, for the engine, is not of great use, now first, first of all, the shelf is built, the first problem to be solved is the problem of engine weight reduction.

Without considering the problem of power, as much as possible to reduce weight, this weight reduction, for the United States at the beginning of the 20th century, it is very difficult, weight loss requires the use of lighter metal, at that time aluminum alloy did not reach any situation, weight loss is very difficult, for steel-based materials, may be a few ounces are a difficult problem to solve.

However, in the Dinghai Navy, although the investment is the largest, the highest technical indicators are steel, but under certain circumstances, it may not reach a very high level, but there is no problem with reducing the weight of aircraft

Aluminum alloy, this was not until the early stage of World War II, it was gradually developed, in World War II, the emergence of metal fighters was the mainstream, but there were still some wooden aircraft, the reason is very simple, aluminum alloy, not so easy to master, and when the real outbreak, all kinds of materials, are very lacking, sometimes the use of wooden aircraft is no way.

Although electricity has not been popularized on a large scale in Dinghai, lighting electricity and household electricity have appeared in some cities, and some large-scale power plants have also appeared, which provides a foundation for aluminum alloy.

Aluminum industry is a large-scale electricity industry, the amount of electricity, the price of electricity, directly determine the price and output of aluminum, not to mention the 21st century, but the smelting of aluminum is still in progress, and on this basis, a series of alloys have been developed.

A considerable part of these alloys can be directly brought into the engine, according to the specific gravity of steel is about 7.8, while aluminum alloy is generally between 2.2 and 2.8.

With just over a half, the entire weight can be reduced by almost half, which is a huge step forward for an aircraft that needs to be designed for a few kilograms.

Dinghai is not only the aluminum alloy such a kind, in the development of science and technology, especially the development of materials, Dinghai has a lot of advantages, from the vision of later generations, and many advanced things in later generations, these things, together, have become the advantages of Dinghai, this advantage, is placed on aluminum alloy, at the beginning of the birth of the aircraft, even when it was not born, aluminum alloy has been innovative, there are several generations.

At the same time, on the basis of aluminum alloy, there are also polymer composite materials.

No matter how lightened the aluminum alloy is, it is also a metal, with a specific gravity of 2.5, which is much heavier than water, not to mention compared with air, but polymer composite materials, it is different, lighter than water is the norm, lighter than wood, and it is also everywhere, and even some, not to mention compared with air, but the overall density is on an order of magnitude, several times, dozens of times.

This kind of weight loss is very obvious, and it is very possible to lose more than half of the weight, more than three-quarters, which is a very possible thing.

Of course, most of the polymer composite materials are not resistant to high temperatures, aircraft engines, and even every engine in the field of internal combustion engines, they are operated at high temperatures, and those polymer composite materials, once they enter the field of high temperatures, will either burn or melt.

This point, in later generations, is also a key problem, to find flame retardant, high melting point polymer composite materials, that is very difficult.

Of course, in later generations, it is also solved, for the place that requires high strength and high heat resistance, it can be replaced with metal, or some high-grade materials, and others, less important places, can be replaced with lightweight materials, and at the same time, some parts that cannot be separated can be replaced by coatings or multi-layer composite structures.

Even now, the petrochemical industry of the Dinghai Navy is not developed, but the advantage of the card system, plus some extracted materials, still has some gains in the field of polymers, this part, whether useful or not, will be sent to the research institute of internal combustion engines.

In the middle, the prototype was rarely used, and the first practical internal combustion engine was not used, and the aircraft engine project was still very useful.

At the beginning of the 20th century, these three projects, although together, were slightly separated, but the real and complete separation had to wait until the technology was more developed and the classification was more obvious.

But like Zhao Xin, they were directly separated.

The special aircraft project, this is very important, related to the future development, but also related to the future, the connection of the five continents, only the development of transportation to a certain extent, the control of the country, will be stronger.

In this case, lightweight materials, numerous metal coatings, etc., were incorporated into this project, and at the beginning, not the power, but only to reduce weight and increase the thrust-to-weight ratio, which only appeared at the end of the 20th century and even the 21st century, but it was used here.

It seems that several projects that are not related to each other have been merged together, but they have played a considerable effect, weight reduction, for alternatives, it is very easy to achieve, aluminum alloy, and a large number of other non-metallic components, into the engine project, soon, it played a good laugh, the weight of the whole engine, without reducing how much power on the premise, reduced by about 60%.

That is to say, the weight of the entire engine is only a little more than one-third of the previous one, which is a huge increase, and to put it bluntly, the original internal combustion engine, which was about 600 kilograms, was suddenly reduced to 240 kilograms, which is equivalent to a reduction of 360 kilograms.

It doesn't seem like a lot of weight loss, which is equivalent to five or six adult men, which is very effective for the entire thrust-to-weight ratio.

If it's just this, at most, to get an ordinary aircraft, Zhao Xin's mention of the engine project will soon spread to other aircraft projects.

In the flight formula, speed, density, and weight are all important data for aircraft takeoff, under the premise of the same or similar size, the lighter the weight, the less speed required for takeoff.

The weight reduction of the engine is only a part, in fact, the biggest weight reduction is not the weight reduction of this engine, but the aircraft itself. In the past, the aircraft research institute only considered the question of whether there was or not, and for the sake of sturdy performance, the plane was relatively heavy.

However, with the internal combustion engine and this sudden method, under the premise of using a large number of lightweight wood, aluminum alloy and polymer materials, the overall weight of the aircraft has been reduced by 70%.

This does not mean that the take-off speed of the aircraft will be reduced by 70%, but the overall reduction is also very small, according to the calculation, and after a certain integration, the use of this engine under the premise, the take-off speed of the aircraft can be reduced to 60%, that is, about 140 kilometers.

This result, so that the aircraft research institute is very excited, 350 kilometers, for the power of this era, to achieve, it is very difficult, but to 150 kilometers or so, that is an acceptable range, perhaps as long as the power and transmission device, the design is better, on the smooth road, to achieve this purpose, is not very difficult.

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