Siheyuan: I eat melons while doing scientific research

Chapter 1174 Double Pulse, from Air to Land? (2k, first to ensure full attendance)
For the Defense Working Committee, not only did they not ignore Gao Zhendong's words about the end of the medium-range projectile's range, but they also noticed Gao Zhendong's expression and movements when he was shooting at high-mobility targets. It was obvious that there was something going on.

After lunch, everyone sat together again, but this time there were not so many people. It was a small-scale discussion. No decisions were made, but everyone just sat down and chatted and looked ahead.

But for the comrades in the army and the Defense Work Committee, to some extent they regarded this meeting as more important than any ordinary discussion meeting.

"Comrade Zhendong, regarding the issue of terminal high mobility..." No matter who it is, this is the matter that everyone is most interested in.

Gao Zhendong knew that the first thing they would ask about would definitely be this, so he was well prepared.

"This is simple in theory, but not so simple to do." In fact, Gao Zhendong was also very puzzled. This thing should not be that difficult. At least the Citigroup guy shouldn't have that performance. After all, from the perspective of the entire technical environment, secondary ignition is not a very difficult thing. However, he boasted about it but ended up not being able to do it for a long time.

Thinking of this, Gao Zhendong couldn't help laughing.

The comrades looked at Gao Zhendong, a little puzzled. Why was he suddenly laughing so happily?
Maybe he has come up with a good idea, that's the only explanation.

Regardless of what his comrades thought, Gao Zhendong began to express his own ideas.

"In fact, this problem is not difficult to solve. If the mid-range interceptor missile has no energy at the end and cannot maneuver, then we just need to add power to the missile at the end."

After listening to Gao Zhendong's statement, the Defense Work Committee and the Air Equipment Bureau didn't come up with anything, but the Guidance Research Institute immediately came up with an idea, but it was wrong.

"Ah, I see, Chief Engineer Gao, we can just add a side booster."

Gao Zhendong nodded and then shook his head when he heard this: "Well, your idea is fine in principle, but have you ever thought about the practical application? The aerodynamic configuration of the side booster and after it is thrown away are completely different things. You want to install two sets of flight control in such a small space on an air-to-air missile?"

It's not even just this problem, there's also the issue of being unable to mount due to size.

After hearing Gao Zhendong's words, the comrades from the Institute of Research calmed down from their excitement. There was nothing wrong with this configuration in theory, but when it came to its application, it seemed to be a little lacking.

"What about the rear thrust?" If side thrust doesn't work, then add rear thrust.

"If it's a post-boost, you still have to prepare two sets of missile flight control. In fact, they are almost the same. Another problem is that if it's a post-boost, you need to pay for a whole set of second-stage rockets. This little difference in air-to-air missiles is a world of difference. And another problem is that this missile will be very long, which will have a great impact on the aerodynamics of the aircraft."

Adding a booster at the back of the missile may not sound too long, but it actually has a huge impact on aerodynamics. If we take the Z-7 as an example, the missile is almost flush with the horizontal tail.

Even if we leave aside aerodynamics, two sets of missile flight control are not actually a big problem, but the storage space for two sets of missile flight control is quite tricky. Neither magnetic tapes nor disks can meet the requirements. Either magnetic cores or semiconductors are required.

Both storage devices are very expensive, and the space required must also be considered. So when Gao Zhendong first said this, the comrades understood that this matter seemed to be more trouble than gain.

"Chief Engineer Gao, how can we solve this problem?" If you can't figure it out, just forget about it. There are people here.

"My suggestion is to solve the problem within a rocket engine casing."

Solve the problem within one engine? The comrades understood, but they didn’t think it through. “We don’t quite understand, Chief Engineer Gao.” said the comrade from the Institute of Direction and Research.

"In fact, it means to be able to have terminal energy without changing the aerodynamic shape of the air-to-air missile. For example, our rocket engine can be ignited twice. The first ignition will launch the missile to gain speed. After reaching the end, it will ignite again to obtain terminal kinetic energy." Gao Zhendong stood up and drew a picture as he spoke.

In fact, it is just a schematic diagram, but comrades all understand it.

"This... doesn't seem too difficult?" This was the first feeling of the comrades from the Institute of Guidance and Research. This is normal, after all, we have been playing with firecrackers for many years.

Gao Zhendong nodded: "Well, the principle is very simple, but the details may not be so easy to solve. If you want to do it, do it first, and we will solve the problem if there is any problem. But if we want to solve the problem of terminal high maneuverability, we have to do this. The cost of other methods is greater than this. During the operation of the rocket engine, there are two sharp rises and falls. According to the waveform, two pulses are formed, so I named it the dual-pulse engine. For details, if there is no way, you can contact me later."

In the solid rocket engine textbook that Gao Zhendong drew a year ago, there was a double pulse, so he could say this directly. The details may be difficult to say, but at least the basic configuration is fine.

The comrades in the Air Force didn't care about the technical details. They just watched and nodded. For them, as long as the effect was achieved, it was fine.

The comrades from the Institute of Guidance and Research were taking notes while listening. For them, this concept was not only heard of but also never thought about. After all, it was a concept that only came into being at the turn of the 20th and 21st centuries.

You just came up with the concept but didn't implement it, right, Citigroup guy?

The comrades at the Institute of Advanced Technology only knew one thing, which was that Chief Engineer Gao said that if they had no ideas, they could come to him later.

Gao Zhendong watched his comrades working hard on recording, waited for a while, and when he saw that they were almost done, he started to bring up the next idea.

"Have you ever thought about how to improve this missile in the future?" This question sounds simple, but it is actually not that easy to put into practice.

"As for improvements, we want to increase the range, improve mobility, and increase the hit rate..."

The direction of improvement mentioned by the comrades from the Missile Research Institute is still to change the concept of air-to-air missiles, but Gao Zhendong wants more than that.

"Well... what you said is also correct, but have you ever thought about another possibility, from air to land?"

From air to land? What does this mean? Thanks to my Chinese, I can understand it, but I haven't thought it through.

"Chief Engineer Gao, don't we have medium-range missiles on land?" Even the Air Equipment Bureau hadn't thought it through.

Gao Zhendong shook his head: "The distance between the medium-range missiles on land and the short-range missiles is too great, and there is a lack of an intermediate transition."

"But the air-to-air missile has a range of 45 kilometers, which is higher than the medium-range on land." said the Air Force comrades, but they forgot one condition.

(End of this chapter)