In the early stages of aircraft design, calculations were based on calculations, but the calculation methods of naval science, including the complete experimental path, also proved from the side that it was not difficult to achieve the aircraft.

Previously, even if the internal combustion engine trial machine research is completed, the Navy did not dare to try to make the aircraft, because the standard of more than 300 kilometers is too high, this height is not now possible.

The power in the blessing to a certain extent, especially the wind resistance and high resistance, coupled with the power, can not offset the increase of resistance, 300 km is almost impossible to achieve.

However, 150 kilometers, is not a difficult thing, you know, in the steam-powered locomotive, has achieved 175 or even 180 kilometers per hour of speed, although the newly completed internal combustion engine, his overall power above, much smaller than the steam engine, but the weight of the aircraft is much lighter.

The first prototype has been designed because, given the performance of the relationship above, the use of biplanes, in the large use of lightweight wood, and some other things, make the overall weight very light, the whole strength, not very high, but enough to support a person's weight.

In the previous theoretical research, has done a lot of planning, and even in advance to do a lot of settings, all designers, are gathered together to design the first aircraft of the Navy, once the design of this aircraft is completed, it is definitely a historical existence.

With the basic data of the engine, it is much easier to redesign the aircraft, and they are much more, so that the entire part of the fuselage fits the engine, and shows maximum ability.

In the case of preparing the prototype, there is a good news, on the basis of the original internal combustion engine, eat through some of Zhao Xin's things, the Zhao letter said more vague things, to get out, just a stroke and closed engine interior, plus some transmission devices, so that the performance of the internal combustion engine increased by 30%, this can also be used on the internal combustion engine, will not add much weight., ,

This is a huge good news, and soon, it is used on the new design of the flight engine, because the aircraft designers are very clear that the engine represents the overall performance, even if the entire setup does not make large-scale improvements, with the power improvement, it is enough to make the aircraft's performance to a higher level.

Now, this overall program has not yet been applied to the aircraft engine, but the two sides are thinking, but added some steps, a little into it, will not let the overall volume have a huge increase, but promote the overall performance.

This sudden discovery also made the aircraft designers realize that after the emergence of the internal combustion engine, after the completion of the basic setting, if you want to develop, it will be very fast, to a certain extent, as long as you can get through the strange settings of Zhao Xin, the promotion of the entire internal combustion engine is huge.

You know, the power of the internal combustion engine before, has reached 20 horsepower, this number, compared to the steam engine thousands, or even thousands of horsepower, the difference is huge, but for the internal combustion engine, is already a very large, on the basis of 18, and increased by about 30%, that means that the entire horsepower, will cross 25, which is a huge increase for the aircraft.

Know that in the future, it can even be foreseen for a short period of time, the power of the aircraft engine, there will be a huge increase, in this case, designers, of course, will not be conservative, they are quite radical, left, the location of the engine installation, a little left some margin, such as volume, such as weight, a little increase, will not let the overall performance of the aircraft drop how much, but once the power to break through, for the aircraft, is huge.

After a little earlier, and magnifying this part of the engine, the final design of the aircraft, it is formed, not only the weight loss of the engine itself, but also the overall weight loss of the aircraft fuselage, after a series of reduction, the overall weight has been reduced to about 180 kg, which is a total length of 6 meters, the wingspan width of up to 8 meters, the entire fuselage height is also more than 2.5 meters of behemoth, in the use of a large amount of light wood, and some hollow settings, the weight of this aircraft, has been light to the extreme.

The horsepower of the engine, about 25 horsepower, which is already the ultimate in the aircraft engine horsepower after weight loss, plus fuel, the upper man, and some equipment, the maximum take-off weight of about 280 kg, compared with the previous, reduced by at least more than 60%, but also with, the take-off speed will be reduced a lot.

In theory, the take-off speed will be reduced to 180 to 190 kilometers, which is an easy to achieve the speed, the performance of the internal combustion engine, compared to their initial expectations, improved quite a lot, it can be said that he is naturally suitable for racing and development of a power set, although, in this period, the aircraft has not been completely stereotyped and designed, but according to the general number, made a similar weight, slightly smaller than the size of the model, after the internal combustion engine, can be faster, on the aircraft preset runway.

This is a very large boost for the people of the aircraft research institute, before, just a fantasies, a design aspect, now, as long as the overall setting of the aircraft is completed, and the power and transmission are optimized, not to mention the speed of 250 kilometers per hour, even 180, 190, can be accepted.

The designers brainstormed, a few easy drafts, and finally got a definite setting, more suitable for aerodynamics, and the force device is also more excellent.

The Navy has already had a propeller, the earliest time, is on the ship, when it is still the way of human transmission, the propeller turns in the water, there are some unique settings of strength and twists, now, the use of the air, can also live to take over, but as a separate engine, a separate propeller, this propeller, very large.

Only a huge propeller can provide sufficient function, this radius has a person with a high propeller, make full use of the height of the aircraft, almost the bottom, close to the ground, the top, and beyond the height of the aircraft, the total diameter of the propeller, rushed to up to 3.5 meters, if the engine is pushed to the premise, very high speed rotation, can provide enough power.

In the actual test of several projects above, the performance of this propeller is very good, in theory, you can convert the power of the internal combustion engine, most of the power to move forward, pulling the aircraft forward quickly.

According to estimates, the use of propellers should be a lot higher, coupled with the improvement of the internal combustion engine, in about 140 kilometers, you can take off.

Soon, after a period of intense construction and design, finally got the plane ready, this prototype, the focus on all aspects of the Navy technology, these together, can play a very good effect, can support the first flight of the Navy experiment.

From the very beginning, the aircraft of the fixed navy has embarked on a completely different path from history, from the first time of its birth, it is not the hand of enthusiasts, it is a very well-made product of the form of air power.

All the parts, after consideration of some even for the aircraft, and unique set of parts, these parts, in the beginning, there is no mass production, many are skilled craftsmen, hand-made.

Because of this manual construction, the whole aircraft is very good fit, whether it is the fixed engine, the installation of the propeller, and other aspects, are performing very well.

This is very different from the first generation of enthusiasts, the strength of the country, as well as the construction capacity of industrialization, here is obvious, even in the processing, there is a problem with parts, the Navy directly lost eight eight-level workers over.

This even in the afterlife, are representative of the processing of the most top-level existence of the mechanic, can be hand-processed, comparable to the results of high-precision machine tool processing, of course, this era of senior workers, not necessarily worse than the future generations, even because of the advantages of training, the advantages of strength, stronger than the future generations.

Later generations have not heard of, such as Sun Ji such a hercules, and this era of breathing, standing pile method, these together, will make the training of people stronger, more stable, which is very critical to the processing parts.

Almost purely handmade aircraft, although there is no experimental test flight, but the performance shown in all aspects has been very good.The previous formula was quite precise, but there was no real take-off experiment, inferred from elsewhere, and not enough to prove everything.

Finally, to the time of the prototype test flight, it can be said that compared with the birth of the aircraft in history, this treatment is very high, all re-layed, specially prepared for the aviation runway, a total of 640 meters, even in the 21st century, is also a relatively long runway, and even take off large intercontinental passenger aircraft.

You know, the Wright brothers invented the plane, in the take-off, only on a lawn, but also only a few tens of meters, when the extremely simple, can only be called a toy of the plane, stumbled on this lawn constantly accelerated, and finally flew into the sky.

According to the calculation standards, the most is the aerodynamic aspects, such a lawn, at least not conducive to continuous acceleration, they lost a lot of speed, and prone to problems.

Early aircraft, are a fan's game, in order to fly to the sky, or to show the strength, in this humble, or even adventure conditions take off and land, prone to problems.

Historically, all aircraft inventors have taken risks, and many famous aircraft inventors have finally returned to aircraft crashs, such as Feng Ru, a famous aircraft designer in China.

Mechanical accidents are one of the most important reasons, in addition, take-off and landing accidents are also important aspects, this, perhaps the early enthusiasts, did not pay attention, but Zhao Xin still noticed, because there is an indicator in the future, the plane crash, most of the accidents, occurred during take-off and landing.

Do all the safety work, and replace the lawn with a runway with less smooth friction, which is good for the flight test of the aircraft.

When a light, but seemingly less fluid plane, stood on the runway, all the researchers began to breathe flat.

When the propeller located in the head of the aircraft, under the impetus of the engine, began to turn quickly, drove the plane, and began to move forward, faster and faster.

Although Zhao Xin knows that the aircraft engine, the future generations are generally only equipped with the wing, but at present, the Navy in the material, is not very passable, and this engine, how to arrange to the above, involving the reduction and gas power and many other arrangements.

Although Zhao Xin gave the graphic, but in the end, these people chose this arrangement, which is located in the head, the highest strength, and easy to arrange, the two wings, the simplest arrangement, that is, the double-layered, relatively large wings of this arrangement.

When the engine began to run, the brakes hit, the propeller began to turn frantically, to a certain speed, the aircraft brakes loose, strong pull power, directly push the aircraft fast forward, today is just the wind, after a short, less than 140 meters of acceleration, the speed has exceeded 100 kilometers, this did not reach the critical value.

However, the role of the wind, as well as the high-speed air flow, this is not taken into account by the computer personnel, in the actual test flight, but the aircraft clearly has a huge lift, when the pilot pushed the sense of direction, the aircraft began to leave the ground, flying in the air.

All the designers, the spectators, and the fellows, cheered, the first plane heavier than the air, to fly into the sky, which also represented the arrival of an era, and this point in time, witnessed by them.

Zhao Xin himself also thought, personally participate in this test flight, and even have the opportunity, you can also fly to the sky, but others persuaded, in the Navy, there are countless new projects, the development of all aspects is also very rapid, from a certain degree above, more important items than the aircraft, in addition to the possible danger of the aircraft, eventually, Zhao Xin's trip was blocked, but in the first time of the aircraft test flight, the site command, or through the telegram, the good news told Zhao Xin.

Zhao Xin also hastily made a series of knowledge, to ensure the safety of take-off and landing, and do a good job of first-hand information, study the aircraft flight theory and flight formula, the most important offensive, the most important offensive, has been completed, but this can not solve all the problems of aircraft take-off, must be in-depth and long-term research, it takes a long time, good news, the Navy is not short of time.