Chapter 167 Retreat

The guidance device section will be led by Teacher Lu, so Wu Tong does not need to spend time and energy to learn it from scratch. Wu Tong will start with the important section, the air-to-air missile engine.

After absorbing a large amount of missile knowledge, Wu Tong gained a deeper understanding of air-to-air missiles.

Unlike aircraft engines that run continuously, the engine operating time of air-to-air missiles is very short, which is mainly determined by the size of the missile. In theory, increasing the size of the missile can increase the engine operating time and range.

It is just limited to the characteristics of air-to-air missiles. After reaching a certain size, the attack efficiency decreases. The AIM54, the air phoenix missile that was once the king of air-to-air missiles in the United States, was retired along with the F14 precisely because of its large size.

Therefore, it is not advisable to simply pursue enlarging the volume and increasing the engine working time. After all, the fighter's airborne load must also be taken into consideration.

According to the information Wu Tong had learned, the engines of most air-to-air missiles only worked for about 10 seconds. Only the engine of the Seacat air-to-air missile with a range of 5.5 kilometers in England worked for 35 seconds.

The engine working time of most medium-range ballistic missiles, such as the AIM120 of Country M, is only 17 seconds.

The air-to-air missile with the longest working time at present is expected to be the Meteor missile that France began producing this year. According to reference materials in the top-secret database, the engine is expected to work for up to 60 seconds.

If this expectation can be achieved, Meteor will be an alternative in the air-to-air missile sequence!

Of course, this does not mean that Meteor can become the most powerful air-to-air missile in the world.

China's missile research and development process has also been full of difficulties. From learning from the Soviet Union and the United States in the beginning, and from purchasing physical objects to independent research and development, China has gone through three years of hardship. In order to put the air-to-air missile into service as soon as possible, it used 22 tons of soybeans and only got back one kilogram of drawings, exchanging much-needed product information from abroad.

In order to pay this heavy price and meet the expectation of the Chinese people to tighten their belts, countless aviation research pioneers worked hard to overcome difficulties such as weak foundation and lack of means, learned technology from them, and made a difficult start, from surveying and mapping imitation, to self-design, and then to independent innovation and development. This is the foundation laid by countless scientific researchers.

Air-to-air missiles, from the grandparents' PL-1/PL-2, to the first domestically produced semi-active radar-guided missile PL-11 officially put into service, and further, the PL-12, which is now the main force of the People's Army, and the new PL-13. Scientific researchers are still working hard to develop the PL-14, and in her hands, at the request of President Hua, the preliminary research of the PL-15 has begun.

Perseverance and self-improvement have always been the fine qualities of the Chinese people. The generation in service, the generation in research, and the generation in pre-research are China's full preparation.

The biggest requirements for air-to-air missiles are that their maneuvering overload must exceed that of fighter aircraft, and that their speed must exceed that of fighter aircraft. Most excellent air-to-air missiles have speeds above Mach 4, and some excellent ones can even reach Mach 5, Mach 6, and even Mach 7, which is comparable to the speed of ordinary intercontinental cruise missiles.

Domestic air-to-air missiles have not yet reached the top level. The PL-13 currently in service has a speed between Mach 4 and 5, reaching the level of excellent air-to-air missiles, but there is still room for improvement.

Wu Tong studied the detailed information of PL-13, and found that the engine it used was still a traditional ramjet engine.

Compared with other air jet engines, ramjet engines are characterized by simple structure, small mass, high efficiency and good economy when flying at high speeds above Ma=2.5.

However, the economy deteriorates at low speeds, and there is no static thrust when the flight speed is zero. It also has poor compatibility with other missile systems, such as the warhead and guidance system.

Wu Tong began to sketch, stroke by stroke, outlining the current composition of the domestic ramjet engine and marking the detailed data. Based on this data, Wu Tong began to transform the mathematical model and conduct directional deduction.

Simple structure, light weight, high thrust-to-weight ratio, low production cost, these advantages suitable for a large number of equipment need to be retained, on this basis, to improve kinetic energy...

Wu Tong kept deducing and perfecting her mathematical model, trying different data and direction deductions, using absolute direction judgment to deduce the optimal improvement direction and optimal parameters, and then slowly perfected her engine improvement plan.

The filling of a massive knowledge base has given Wu Tong sufficient foundation for absolute direction determination in the field of missile science, and the extension of absolute deduction ability. Sparks of thinking collide in her mind, deducing detailed structures, and simulating actual performance in her mind, converting them into parameters, filling Wu Tong's design model.

Wu Tong was completely immersed in it. After telling An Wenshu, who was responsible for protecting her, she went into seclusion in the dormitory, eating, sleeping, washing, studying, resting to recover her energy, and then deducing. The model of the new air-to-air missile engine was gradually filled in and improved in Wu Tong's deduction, moving towards its implementation.

She conducted preliminary research and simulation based on a range of at least 200 kilometers and a speed of at least Mach 6. This is a watershed hurdle. Only by reaching this data can she be qualified to touch the world's top air-to-air missiles.

If you want to do something, do it to the best of your ability. This is what Wu Tong insisted on. Super power, super speed, and super combat power. Do what she can to the extreme, build a real national weapon for China, and live up to the trust of President Hua who traveled thousands of miles.

Research and understanding of Wu Tong shows that once Wu Tong enters this special Wu state of immersion and oblivion, great success will occur.

When Wu Tong was completely immersed in an outburst of inspiration and in complete seclusion, the security force was infinitely superimposed with her dormitory as the center. In addition to An Wenshu who would deliver meals to Wu Tong's dormitory on time, without looking away, delivering nutritious meals and taking out tableware...the logistics work was done by a dedicated person, and she was responsible for the entry and exit.

No one else is allowed to approach Wu Tong's dormitory and disturb Wu Tong's research. Comrades from the security department work in shifts day and night and have made sufficient security preparations.

The cold air gets heavier day by day, leaves are falling, and it seems that in the blink of an eye, autumn has turned into winter. The cold wind is howling, and frost is beginning to condense on the branches. The Kyoto University campus has turned from the splendor of autumn to the slightly bleak scene of winter.

Wu Tong sat in front of the window, the warm winter sun shrouded her body, and it seemed as if there was a lingering light. In her eyes, she reflected the engine model on the table that she had deduced bit by bit and drawn stroke by stroke. The complex data and clear and precise structural modeling on it showed her outstanding achievements in the past twenty days.

Her hands were still deducing, and she had already reached the optimal engine design based on the reserve knowledge system she currently possessed. She also wanted to give it a boost, equip it with fuel with better performance, and further add wings to it to fly.