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In the original history, the third rotation of troops hastily dispatched three armies from the northeast to North Korea at the end of the fifth battle, rushing to build fortifications between the 3th parallel and Pyongyang to deal with the worst situation ——The embarrassment of the Volunteers in the latter part of the fifth campaign can be seen.It wasn't until the Cheorwon blocking battle was successful that Mr. Peng, Zhisi, and the chairman breathed a sigh of relief.

现在……第五次战役早就打完，东豆川反击战也打完都一个月了，作为第三番轮换兵团的47、67、68军还在东北不紧不慢地熟悉换装的新武器呢。第16军、36军、37军更夸张，还没运动到东北。

In any case, this must be a good thing, at least Dalian Jianxin Company does not have to work overtime in a hurry to equip the volunteers who entered North Korea with light weapons.

Originally, the central government planned to let each batch of troops stay in North Korea for 6 to 9 months, long enough to get familiar with modern high-intensity warfare.As for the five battles and the Dongducheon counterattack, the 3rd Corps with relatively large losses-the 12th Army, the 15th Army, and the 60th Army, can also carry out some rest and replenishment on the spot.These three armies took the lead in experiencing the Korean positional warfare and withstood the heavy artillery bombardment of the US military.But now domestic recruits can be sent directly to North Korea by truck for replenishment; as long as the troops retreat 40 kilometers from the front line, they can eat well and sleep soundly. In short, they can recover blood on the spot in North Korea.

……

The negotiations in Hwacheon fell into a stalemate. While we adjusted our troops to strengthen our defenses, Zhisi and Beijing reconsidered their bottom line for negotiations.

When the armistice negotiations started, the armistice plan proposed by our side was to withdraw the United Nations Army from the area north of the Han River. This is of course a negotiating strategy, and our negotiation bottom line is not like this.

The bottom line is very simple, the two sides cease fire on the spot.Whoever is controlling the territory will belong to him in the future.

As the acting chief of staff, Su Yu wrote a long report on the internal discussion of the conditions for the second negotiation.

"Chairman, Commander-in-Chief: Currently, the areas controlled by our army in North Korea are very conducive to defense. Especially on the western front, our army occupies the mountains while the enemy only has plains. , restrain the enemy's superior firepower attack, and confront the enemy for a long time. On the eastern front, our army and the enemy army both occupy the mountainous area, and the two sides face each other across the mountain. It is not easy for the army to conquer our position."

"At present, our advance to this front line is also very conducive to our deployment of defensive forces from the perspective of campaign and strategy. The current line of control between the enemy and ourselves is a slightly inclined straight line. In this area, the width of the Korean Peninsula is not large, only slightly Longer than the dividing line at Anju. Confronting at this line of control, we only need 6 armies to form a complete defense. In the future, after the construction of our army’s tunnel fortifications is completed, we only need 3 armies: 6 divisions to guard the front line , the mobile force of 3 divisions serves as a reserve force."

"...If the 38th parallel north latitude before the outbreak of the Civil War is used as the military demarcation line, then we need 9 armies to establish an effective defense on the entire front, and since the western section of the 38th parallel passes through many plains, the eastern section Many defensive terrains were unreasonably divided, and it was difficult to use the mountains to build fortifications. Even after a year or two, at least 38 armies were still needed to defend the 6-degree line."

"If the enemy asks us to retreat a certain distance on the western front, but does not reach the 38th parallel, our defense width and defensive terrain will not change much, nor will the difficulty of building fortifications. However, the enemy's defensive posture There will be a significant improvement. If the enemy's defensive posture on the western front improves, the remaining troops may be used as a mobile force to find weak points in our defense on the confrontation line and concentrate our forces to attack. Therefore, it is also disadvantageous to me in the end of."

"...As far as the current situation of the enemy and us is concerned, although our side has penetrated south of the 38th parallel on the western front and controlled areas that North Korea did not control before the war, on the eastern front, the enemy's occupied area has also exceeded 38 degrees. Line, invaded the territory of North Korea. If measured by the 38-degree line before the war, our side occupies more of the enemy’s area, and the enemy’s occupies less of our area, but after all, both sides have gained something...a truce on the spot There must be very difficult and lengthy negotiations, but I believe that we should adhere to this bottom line, not make concessions on the battlefield, and use resolute military actions to urge the other party to agree to the terms of the armistice.”

……

Shenyang.

The No.30 Eighth Factory of the former Air Force has been upgraded from an aircraft repair factory to a manufacturing factory, and it has been divided into two: Factory 112A and Factory 112B. The construction of Factory 112A has already broken ground with the help of Soviet experts, and it is positioned as a jet fighter factory; Factory 112B started construction and put into operation at the end of last year. It is Tang Hua's missile factory.

These two factories are really rivals. One factory specializes in making aircraft, and the other makes missiles that specialize in hitting-flying-planes.

However, not all the missiles manufactured by the 112B factory are for shooting-flying-aircraft.Before Tang Hua came to Shenyang, the 112B factory had sent the uncontrolled test bomb of the air-to-ship version of the Haiying-1 anti-ship missile to the test site.

In January 1951, the technical status of the Hongqi-1 air defense missile was frozen and put into mass production.In the next six months, Huang Zhiqian was not idle in the 1B factory, and spent half a year building two new rocket engines.

...Not all of them are new, the solid propellant is still the kind of rocket launcher.The engine is enlarged on the basis of Hongqi-1.

"Lao Lu has completed the wind tunnel test of the new missile in Mikoyan, and the data has been brought back to the Beijing Institute." Tang Hua said, "How is the strength design of the missile and the troubleshooting when the two stages are separated? How are you doing now? "

Huang Zhiqian: "There was no problem when the missile static test was done for the first time. After finding the cause of the two-stage separation failure and repairing the defect, we conducted another static test and passed it."

Huang Zhiqian and Tang Hua are in the workshop of Factory 112B, where the second batch of test bombs for the Hongqi-2 missile is being produced.

The Hongqi-2 missile is also a mobile field anti-aircraft missile, mounted on a truck, and guided by radio commands.

Hongqi-1 is a short-range air defense missile at medium and low altitudes, and Hongqi-2 is barely a medium-range air defense missile.

It is not complicated to say, Hongqi-2 is one level more than Hongqi-1, and a section of booster is connected behind the buttocks. The diameter is a little larger than Hongqi-1, and it is 2 meters long.Then Hongqi-2 became a pencil with a length of 4.4 meters.

Both the static test and the booster separation test were done in the test area of ​​the 112B factory, because the sample bomb for the separation test does not need to be fired into the sky, it depends on whether the booster can be separated smoothly and whether the front part of the belt is attached when separating. Gotta roll around.However, the first separation test was not normal. After the booster fell off, the missile belt always turned over.It took Huang Zhiqian more than a week to improve the booster, and then the separation test passed.

Tang Hua: "The Beijing Institute of Computer Science is still developing the flight control software for the new bomb, but it is now ready for the uncontrolled flight test of the missile. When the manufacturing task of the second batch of test bombs is completed, they will be transported to Wuliangsu Sea. "

Huang Zhiqian: "This time Wuliang Suhai's test, will we also conduct a test of the warhead?"

Tang Hua: "There is no need to test the warhead this time."

Huang Zhiqian: "Minister Tang, we have done several ground explosion tests on your new warhead, and its lethality and radius are super good."

……

The reason why Tang Hua wants to launch the Hongqi-2 is very simple. He wants to use the field air defense system to poke the B-29, and it is best to poke the B-36.

B-29的最大飞行高度9700米，带弹作战时投弹高度最高8000米。B-36稍微有点提高，最大飞行高度达到13000米。

Huang Zhiqian tinkered with the booster engine at the end of May, and then used a computer to make a rough theoretical calculation. He believed that the firing height of the Hongqi-5 missile could reach about 2 meters, and the B-11000 would definitely be able to beat it down. 29 with difficulty.Tang Hua thought that the maximum shooting height should be increased a little more, so he sent Huang Zhiqian the blueprint from Beijing. The warhead was reduced from 36 kg to 30 kg, and the weight saved was used for propellant.

If the quality of the warhead is cut in half, the power will drop.One way to deal with it is to improve the guidance accuracy, and the other is to replace the continuous rod warhead.

...In fact, if there is time, it is best to develop a new high-efficiency propellant.But it's too late now.In the future, if a new propellant with higher energy or higher burning rate is developed and put into production, it can be used to increase the maximum range and flight speed of the missile.

In the conference room of Factory 112B, Tang Hua watched the documentary of the ground test of the continuous rod warhead.

The warhead is placed on the platform in the middle of the test site, and dozens of iron sheets the size of door panels form a circle with a radius of 20 meters.After the warhead was detonated, the scene was filled with gunpowder smoke, and several iron plates could be seen cut off from the middle through the camera.Tang Hua picked up the photos taken at the scene after the explosion and looked at them. Even if the iron sheet was not cut, there were traces of being pierced by a rod-shaped object.

"Well... it seems that the connection between the pole and the pole is not particularly strong." Tang Hua said, "but the penetrating power is enough. But this time you went to Wuliangsuhai for test firing, the missile still does not have a warhead, install a The counterweight is enough. If the warhead is installed upwards, it will take a lot of trouble. The missile flies out smoothly at the test site, and the two-stage separation is a victory. By the way, measure the maximum combat altitude and maximum combat slant distance. "

Chapter 179, Fish Fried in Wuliangsuhai

Huang Zhiqian made two new rocket engines, one is the booster of the Hongqi-2 missile, and the other is the main engine of the Haiying-1 air-to-ship type.

The first one uses the propellant of the Hongqi-1 main engine, and the second one is a little more complicated, and the propellant has to be changed.

Because the engine of the anti-ship missile works for a long time, the burning speed of the propellant must be controlled...

The propellant of the surface-to-air missile engine can burn very quickly, and it doesn't matter if the propellant burns out in a few seconds-maybe it is better that the missile accelerates to the maximum speed in a short time, so that the missile actually flies at a higher average speed .The rest of the voyage depends on inertia.

Anti-ship missiles will not work. Basically, the engines must be jetting during all flight stages.If the engines were off, the low-altitude/sea-skimming missiles would slam into the water.Based on the maximum range of 36 kilometers, the main engine of the Haiying-1 air-to-ship type will probably burn for nearly 3 minutes.

The second type of propellant obtained by Tang Hua is also the first type of slow-burning propellant. The technology tree lit up is not limited to anti-ship missiles.Now Tang Hua is holding the second result in his hand.The projectile cartridges were cast by Jilin Chemical Industry Co., Ltd., but because they were relatively small and did not require much raw material, Jilin made 20 of them in one go.Of course, these are all experimental bombs, and they are just for the most basic principle verification.

Tang Hua was carrying one of them, followed by Huang Zhiqian and seven or eight soldiers, each carrying something in their hands.

"Cable factory...you should emphasize to the factory manager that this thing is not only to be produced, but also to control the cost," Tang Hua said to Huang Zhiqian, "It's not that I gritted my teeth and piled up materials, hand-stretched copper wire, hand-wound If the good product rate is low, mass production will be carried out to select qualified ones. This is not considered as the completion of the research and production task. The ex-factory price of this coil must be controlled within 300 million yuan. This price means that the entire project cannot continue. I cannot use more than 860 million coils of copper wire on a single-use thing. The output of this thing will be very high. If the frontline commanders are in a hurry, they may take it When 40 fire is used, the consumption is very large.”

Huang Zhiqian: "I told the cable factory that the price must be controlled, and they are also working hard. The first batch of trial-made coils does have a lot of manual processes, but the cable factory is already working on industrial production plans. If industrial production With the implementation of the plan, the ex-factory price can be controlled.”

Tang Hua: "Military products are sometimes more expensive than civilian products. After all, the quality requirements are different, but the cost cannot be increased without limit. ... Well, because the cable factory only gave us 5 qualified coils in the first batch, so Let’s shoot a few pure flight test bombs first.”

When a group of people walked to the shooting range, Tang Hua opened the things in his hand and placed them on the launch pad.A small rocket more than two feet long, with a pointed tip and four large tail fins.

This thing... is an anti-tank missile.

The place where the spring tail was supposed to put the coil was filled in with something of the same weight.

For anti-tank missiles, there is no need to go to Wuliangsuhai for testing. Any gun range can be used as a testing ground.

The missiles are set up, all the wires that need to be connected are connected, and a soldier controls it a few meters away, while the rest hide tens of meters away.

The soldier pressed the launch button, and the missile exploded and flew out roaring.Because it is a pure flight test bomb, it does not have controls or even wires, so it flies a route with a relatively high trajectory.The indicator light on the tail of the anti-tank missile rotates rapidly, indicating how fast the missile is currently rotating.According to the design standard, the rotational speed of this missile should be 9 revolutions per second, but the rotational speed cannot be accurately measured now, so I feel that the missile rotates very fast.

About 30 seconds later, the missile's propellant burned out and it fell from a height of tens of meters.

"Is it enough for 500 meters?" Tang Hua saw from the telescope that the missile flew until the fuel was exhausted, but he didn't know how far it flew.