Back to the Republic of China to be a editor

If North Korea buys two systems, it should be one in Pyongyang and one in Wonsan.But Tang Hua hopes that Anju, Pyongyang, Wonsan, and Changfeng will each have one set, so as to cover the volunteer army's logistics transportation line to the greatest extent.Especially the three logistics hubs and transfer stations of Anju, Pyongyang, and Changfeng. There will be large-scale material storage and distribution centers in these places.

"North Korea should be provided with a simplified version of the S-25 missile system," Tang Hua told S-25 chief engineer Kuksenko. "The simplified system should only include 2 search radars, 10 tracking radars, 1 20 control room and [-] rotating launchers, and the number of loading vehicles and ammunition reserves has also been halved. This should be very simple, and the system configuration manual can be modified slightly, and then shown to North Korean comrades.”

"I agree, Pyongyang is not as important as Moscow."

"The point is, so North Korean comrades can purchase four sets of S-25 systems."

Kuksenko: "Don, although the purchase cost of equipment has come down, the construction cost of the four anti-aircraft missile launch positions is not low. Moreover, I doubt whether the North Korean army still has so many engineering troops to build launch positions. .”

"I think this may be built by the Chinese army... North Korean engineers are just auxiliary."

……

Having settled on North Korea's simplified version of the S-25 system, Tang Hua and Kuksenko continued to talk about missiles.

"Cook, do you think it's wise to make the V-300 a single-stage rocket propulsion?"

唐华不能不吐槽。这就是为什么S-25弹长12米，射程只有40公里并且最大飞行速度也就2.5马赫的主要原因。再晚几年问世的S-75（萨姆-2）全长9米，射程和S-25差不多，而且最大飞行速度3.5马赫，这导致S-75的不可逃逸射界其实比S-25还要大。

"'Waterfall' is like this, so we continue to use it." Kuksenko shrugged, "When we first decided to launch the 'Golden Eagle' project, we were pursuing the stability of the technology so that the design could be completed quickly. So Beria ——My predecessor advocated drawing on the structural design of 'waterfall'."

"The two-stage liquid rocket engine system is the best," Tang Hua said. "If I'm not mistaken, this is the anti-aircraft missile that the First Special Bureau is working on."

"I probably know something. It is true that the anti-aircraft missiles that the First Special Bureau is making are better than the S-25. But that will be many years later, and now the First Special Bureau has not even started to manufacture the prototype."

The missile made by the first special bureau is the S-75.Now that the shopping cart of S-25 is emptied by the North Korean comrades, it means that China does not need to waste too much time on the low-level S-25 missile. In a few years, it will directly go to the S-75 in one step. Still worth imitating.

In the early 60s, the S-75 and the "Hawk" were probably regarded as the duo of medium and long-range air defense missiles. The range of the two was similar. The S-75 flew faster and shot higher. The strength of the Hawk was that it was very small. The tracked launch vehicle can hold 3 pieces, but the maximum shooting height is only about 15000 meters.Both missiles have been used pretty much into the 21st century.

"Cook, when will the next stage of test launch be carried out? I plan to return to China in March, and I have obtained permission from the MGB."

"March 3, it will be soon. But even if the test launch in the next stage is successful, there are still many problems with the missile," Kuksenko said. "The thrust of the rocket engine is unstable in the middle and final stages. It took two months to find the cause of the failure and complete the adjustment. There should also be problems with the radio proximity fuze. But fortunately, these two failures did not affect the missile test launch on March 10."

"The adjustment of the rocket engine and fuze will not change the aerodynamic layout of the missile, so there is no need to change the software and hardware of the fire control computer. The nuclear warhead missile is simpler. I don't think it needs tracking guidance and flies along a fixed trajectory. Just detonate the nuclear warhead." Tang Hua counted the days, "Well, after the test launch on March 3 is completed, I will withdraw."

……

Changchun, Jilin.

坦克第一师第一坦克团是1950年11月成军的，当时是以一个开M5轻型坦克的坦克团和一个97式坦克营的人员为基础扩军而成，到长春之前都把自己手里的小破坦克扔了，空手坐火车来到这里。1951年1月，坦克第一师的苏联坦克到了。开惯了小破坦克的第一坦克团坦克手接收T-34-85和SU-100的时候都觉得自己是乞丐换了金装。

现在的坦克第一师下辖两个坦克团、一个自行火炮团，共有150辆T-34-85、60辆SU100和40门SU76。至此，苏联答应援助的300辆T-34-85已经交付了一半。SU100名为自行火炮实为自行反坦克炮，这是为了加强对重型坦克的阻击能力，毕竟T-34-85打潘兴怕是得打菊花才行。

After training in the ice and snow in Changchun until February, the tanks of the two T-2-34 battalions of the 85st Tank Division were transferred away.Two weeks later, when these tanks were returned, the tanker found that his T-34-85 had something extra.

"Why does this tank have eyes?"

"Still a pair of red eyes."

Huang Huxian, the commander of the first division, personally led a team to receive the tank. He gathered the tank soldiers and said loudly: "This is a night-fighting tank after the transformation of the Changchun Factory. The operation and use manuals have been issued to every tank company! You guys They are all literate and went to school, so I will start to learn the manual knowledge tonight, and hold a discussion and study meeting with the company as a unit, and I must learn to operate in the shortest time!"

The T-34-85 equipped with an active infrared night vision device has an infrared lamp welded on the left and right sides of the turret, and the lamp glass is faintly red.Later, this batch of T-34-85 was called "red eye tank" by our soldiers.These two infrared headlights are used for the gun aiming night vision device, and the infrared night vision device used by the driver is installed on the car body.Two lights are used because the infrared headlights protruding from the turret without thick armor are too easy to be damaged. Anyway, the most expensive active infrared night vision device is the receiving device, and the aperture of this thing is only 8 cm. There is also a switchable protective cover, which is not so easy to break. Infrared headlights are actually not expensive, so just install two at a time.

Now infantry soldiers in our army can be illiterate when they join the army. After entering the army, they will gradually learn culture. If they can recognize three to five hundred characters a year, they will be considered qualified.The cadres and soldiers of the First Tank Division required a minimum of high school education, that is, a level of literacy and simple arithmetic.Thanks to the good cultural background of the tank soldiers, after a week of theoretical study and parking operations, on the evening of March 3, the first battalion of the first tank regiment drove three red-eyed tanks to the training ground.

"You drive this training ground every day, and you should be familiar with the terrain." The battalion commander said on the radio, "All drive to the starting line and stop, and then the lights will be turned off in the training ground."

The three tanks drove to the starting line, the big light bulbs on the training ground were turned off, and the whole field was pitch black.According to the instructions in the manual and the operation skills of the past few days, the driver turned on the infrared night vision device, bent down and looked closely, and finally tried to identify the terrain of the training ground.

"I seem to recognize the way!"

The engine starts, and the T-34-85 slowly advances.Passing a small hurdle, the tank bumped a bit, causing the driver to sway back and forth, and his eyes left the night vision device.The driver had to work hard to control his body so that his eyes could always stay near the night vision device screen.The first tank went straight, turned left, turned left again, and finally turned a semicircular turn at a not too fast speed, and returned to the original place.The taillights on the tank's buttocks can be seen by other personnel and tank crews on the training ground. Everyone confirmed that the first tank did not go the wrong way, and followed the route marked with small stones on the training ground.

"This is quite useful." The pilot opened the hatch and said to the battalion commander, "I can recognize roads, trees, and stones. It's just that the screen is a bit small, and I have to look at it."

Then came the second and third tanks, and they all walked the whole journey tremblingly.

The driver's infrared night vision device has been tested, and now it's time for the gunner.

Now, the turret of the T-34-85 is more crowded than before. There is a small screen wrapped in a rubber apron in front of the gunner, and there is an instrument box under the left foot. The range of free movement of the legs and head is also reduced.

According to the operating instructions, the gunner turned on the night vision device, and the picture tube lit up with a bang.

"This is where……"

The gunner recalled what he saw during training at the tank field during the day, trying to connect with what he saw on the picture tube screen.In fact, the picture tube resolution of the gunner night vision device is higher than that of the driver, but it is still blurry according to today's standards. As an analog picture tube, the effective resolution that can be seen in most cases is only about 200x200 Pixel it.

The gunner still confirmed where the image he saw was.Then he slowly turned the turret, and the scene seen on the picture tube screen also moved. "That's right, that's right here!"

When the turret moved, the picture it saw became a dynamic image, and the scenery outside the car, which was not very certain before, became more certain.

The gunner shakes the turret to the left and then to the right. After getting familiar with this system, try to push the magnification to the maximum, so that the cross in the center of the picture tube screen is aligned with the 300X3 meter target 2 meters away. After repeatedly aiming at the big rock, the gunner pressed the firing button.

"Crack!" A 7.62mm tracer bullet was fired from the muzzle of the machine gun parallel to the tank, and hit the lower right side of the boulder.

"It's down to the right, about 1 meters." The commander didn't have a night vision device, and everything in front of him was pitch black with the naked eye, only the tracer bullets of the machine gun could be clearly seen.

The gunner adjusted the angle slightly, the aiming center of the screen shifted to the upper left, and then fired again.

……

The two tank regiments of the 3st Tank Division, like the 19rd Corps and the 13th Corps, are the second battle units scheduled to replace the [-]th Corps.Judging from the war situation in North Korea, these second units must complete their training as soon as possible before they can replace the exhausted first units to rest.

Chapter 127, Installed a new machine

"Ambassador Wang, our communication with the Soviet intelligence agencies is very fast, and the work of the embassy is really amazing."

Wang Jiaxiang looked at Tang Hua and laughed: "Strictly speaking, it's not an information exchange. It's just that the Soviet Union promised to provide us with inside information about the United States. It's one-way. We don't plan to integrate with the Soviet intelligence system yet. It was passed on to us by the Soviet Union." The information was timely, so we sent it back to China very quickly."

"If possible," Tang Hua stated his real purpose, "may I ask the Soviet Union whether it is tracking the movements of Crypto AG in Switzerland? I guess the Soviet Union should be monitoring this company, but it may not be. If we can continue to get The public or semi-public information of this Swiss company is very helpful to us."

"I will make this request to the Soviet Union."

Crypto AG is a company that makes cipher machines, the founder is the famous cryptographer & engineering inventor Boris Hagelin.

The M-209 cipher machine currently used by the US military was invented by Hagelin.

Hagelin was a cryptographer, engineer, and inventor, as well as a shrewd businessman.During World War II, his M-209 sold 14 units in the British and American allied forces. After the war, he moved the industry from the United States back to Switzerland, that is, established a new Crypto AG company, and began to produce civilian version of commercial encryption machines. Continued supply of the M-209 to the UK and US.As a shrewd businessman, Hagelin is best known for claiming compensation from Germany after the war.After Germany discovered that its "Engeny code" cipher machine was no longer safe after World War II, it plagiarized Hagelin's encryption patent and copied a batch of Hagelin machines.After the war, Hagelin went to a lawyer to file a lawsuit, demanding that Germany pay money.In the end, when the U.S. government gave up Germany’s war reparations (offset by the Marshall Plan’s aid, and in the end, the U.S. gave Germany a lot of money to stabilize the country), Hagelin actually won from the German government. The lawsuit demanded a large sum of compensation.

Historically, in 1952, the U.S. military began to dislike the encryption strength of the M-209 cipher machine for not being high enough, and asked Crypto AG if there was any new and powerful product.Hagelin immediately produced a stronger cipher machine, the C52. M-209 has a maximum cycle of 1 million times, and C52 has reached 27 billion times. It is the most powerful Hagelin machine and may also be the strongest cipher machine in the mechanical age.

In view of the fact that Hagelin produced the CX52 within a few months after the U.S. military put forward the request to Crypto AG, it shows that the C52 cipher machine has already been designed, and Hagelin is only waiting for the M-209 to earn enough money to make no more money. Take the C52 out.Of course Tang Hua also knows the internal structure of the C52 cipher machine, and things that are too classic will always be written into textbooks...

But Tang Hua needs to know when the US military will purchase C52.It turned out that the U.S. military decided to replace the M-1952 in 209. Now the U.S. military’s encryption system in North Korea is basically naked.Maybe, the historical C52 cipher will not be equipped with the US military one year in advance, and the model will also become C51?It should not be too difficult to know when the United States will change the encryption machine, just track the financial situation of Crypto AG.When Crypto AG receives a large order and payment, and the operating status is 6 to take off, it must be that the US military places an order for C52.

"The minimum requirement is to keep track of Crypto AG's external financial status. It would be the best if we can get the order customers and order quantity of Crypto AG," Tang Hua said.

Ambassador Wang nodded, "This should be my last job before leaving office. Communicate with the Soviet Union, make a request, and then return to China. By the way, the central government called and said that this time you must go back with me, and you should also accept it." Have you been notified?"