Before returning to the college entrance examination, I became popular in the science circle

Chapter 168 Retreat
The guidance device section will be led by Teacher Lu. Wu Tong does not need to waste time and energy to learn it all over again. Wu Tong will start with the important section, the air-to-air missile engine.

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

Unlike the continuous operation of aircraft engines, the engine working 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 working time and range.

It's just limited to the characteristics of air-to-air missiles. After reaching a certain size, the attack efficiency decreases.The Phoenix missile AIM54, once the king of M country's air-to-air missiles, was retired along with the F14 because it was too large.

Therefore, it is not advisable to blindly pursue enlarging the volume and increasing the engine working time.After all, the airborne nature of the fighter jet must also be taken into consideration.

According to the information Wu Tong knows, the engines of most combat missiles only work for about 10 seconds.Only England's Sea Cat combat missile with a range of 5.5 kilometers has an engine operating time of 35 seconds.

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

The air-to-air missile that currently has the longest working time is expected to be the Meteor missile that France started producing this year. According to reference materials in the top-secret database, the engine working time is expected to be as long as 60 seconds.

If this expectation can be fulfilled, Meteor will also be an alternative existence 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 obstacles. From the very beginning, it learned from Su Xuemei, from purchasing physical objects to independent research and development. After three years of hardship, China used 22 tons of soybeans in order to install the air-to-air missile as soon as possible. I got back a kilogram of drawings and exchanged much-needed product information from abroad.

For this heavy price and the expectation of the Chinese people to tighten their belts, many aviation scientific research ancestors worked hard to overcome difficulties such as weak foundation and lack of means, borrowed technology from them, and started hard, from surveying and mapping, to self-design, to independent innovation and development. , is the foundation laid by countless scientific researchers one after another.

Air-to-air missiles, from the PL-1/PL-2 of my grandfather's generation, to the PL-11, the first domestically produced semi-active radar-guided missile that has been officially put into service, and further, now the main force of the People's Army's defense force, PL-12 13. The new PL-14, and scientific researchers are still making progress, working hard to develop the finalized PL-15, and in her hands, the PL-[-], which has been pre-researched at the request of Mr. Hua.

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

The biggest requirements for air-to-air missiles are that the maneuvering overload must exceed that of fighter aircraft, and the other is that the speed must exceed that of fighter aircraft.The speed of most excellent air-to-air missiles is Mach 4 or above, and even a few excellent ones can reach Mach 5, Mach 6, and hit Mach 7, which will catch up with 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 4-5, which has reached the level of excellent air-to-air missiles, but there is still room for improvement.

Wu Tong studied the details of the PL-13. The engine used is 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.

However, the economy deteriorates when flying at low speeds. When the flight speed is zero, there is no static thrust.Poor compatibility with other components of the missile, such as the warhead and guidance system.

Wu Tong started to draw, stroke by stroke, outlining the current composition of domestic ramjet engines and annotating detailed data. Based on this data, Wu Tong began to transform mathematical models and conduct directional deductions.

The advantages of simple structure, light weight, high thrust-to-weight ratio, and low production cost, which are suitable for a large number of equipment, need to be retained. On this basis, the kinetic energy can be improved...
Wu Tong kept deducing, perfecting her mathematical model, trying different data and direction derivation, using absolute direction judgment to deduce the optimal improvement direction and optimal parameters, and then slowly perfected her engine improvements. plan.

The filling of the massive knowledge base gave Wu Tong sufficient foundation for absolute direction determination in the field of missile science. With the extension of absolute deduction ability, sparks of thinking collided in her mind, deducing detailed structures, and in her The actual performance is simulated in the mind, converted into parameters, and filled in Wu Tong's design model.

Wu Tong was completely immersed in it. After explaining to An Wenshu, who was responsible for protecting her, she went into seclusion in the dormitory. She ate, slept, washed, researched, rested and regained her energy, and then performed the deduction of the new air-to-air missile engine model. Gradually fill in and improve, moving towards implementation.

She started with a range of at least 200 kilometers and a speed of at least Mach 6 for pre-research and deduction. This is a watershed hurdle. Only by reaching this data can she be qualified to touch the world's super air-to-air missile.

If you want to do something, do your best. This is Wu Tong’s insistence.With super power, super speed, and super combat power, she can do what she can to the best and build it for China. It will be a real national weapon and live up to the trust of Mr. Hua who traveled thousands of miles away.

In view of the research and understanding of Wu Tong, once Wu Tong enters this special Wu state of immersion and forgetfulness, he will have great success.

When Wu Tong fell into a complete burst of inspiration and completely retreated, with her dormitory as the center, the security force was infinitely superimposed. In addition to An Wenshu, she would deliver meals to Wu Tong's dormitory on time, without squinting, and deliver nutritious food. Meals, and then taking out the tableware... The logistics work is completed by a dedicated person, and she is responsible for entering and leaving.

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

The cold is getting stronger day by day, and fallen leaves are flying. It seems that in a blink of an eye, autumn has turned to winter, the cold wind is howling, and frost has begun to condense on the branches. The campus of Peking University has changed from the gorgeous autumn to the slightly bleak scene of winter.

Wu Tong sat in front of the window, the slight warm winter sun shrouded her body, and there seemed to be light lingering around her.Her eyes reflected the engine model on the table that she had deduced bit by bit and drawn stroke by stroke. The complex data and precise structural shapes on it reflected her outstanding achievements in the past 20 days.

Her hands are still deducing, and she has reached the optimal engine design based on the accumulated knowledge system she currently has. She also wants to give it another boost, add fuel with better performance, and further add wings to fly.

(End of this chapter)