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Zhang Guohua: "In the defense system in southern Tibet, Tawang is the last support point, and Derangzong and Bangdila are more forward. You are different from Pasika. Pasika is a mountain mobile warfare and a small number of positional defenses. , You are defending from danger, but you maintain the ability to maneuver and counterattack. Therefore, the firepower you have to bear may be relatively intensive."

Liu Guangtong: "According to the commander-in-chief's instructions, Dawang and Derangzong are the support points for key construction. The road between Dawang and Derangzong has been repaired and strengthened in the past few months. Our regiment in Dawang can Draw out 2 infantry battalions for mobile operations at any time, advance reinforcements or cooperate with the 153rd regiment in the battle of Derjangzong."

Zhang Guohua looked at Dawang Town among the mountains. Behind him, a group of trucks drove out of the mountain road into the wide road of the town after a very difficult road journey.

"How is it? Is there any artillery loss along the way?" Zhang Guohua asked the head of the 54th Army's cannon artillery regiment.

"Report to the commander, there is no loss. When crossing the mountain pass, a cannon slipped more than 4 meters, but luckily the driver was clever and stopped it."

After two days and one night of "crawling", the 12 85mm cannons finally passed the newly built road and arrived at Dawang, and then arrived at Derang along the Dawang-Derangzong road built by Indians and renovated by China. Zong.

Although the 85mm cannon tube is small, its range can overwhelm the American 105mm and 155mm howitzers.

When it is extremely difficult to transport heavy weapons to the front line, 85 Plus is the kind of life-saving equipment that can greatly match the inferiority of our artillery with a small amount of deployment.

……

"According to the combat plan formulated by the General Staff and the General Command, if there is a large-scale attack by the Indian army, the first thing we need to do is to abandon Bundila at the three points of Dawang, Derangzong, and Bundila."

After the heads and political commissars of the 155th and 154th regiments gathered in Dawang Town, Zhang Guohua briefly explained the combat strategy in southern Tibet.

"The shrinking front is to better attack the opponent. We shrink, the supply line is shortened, and their supply line is extended. Moreover, their troops are gradually climbing up from the lower altitudes. Soldiers and officers will encounter more and more difficulties. more difficult."

"In Derangzong, we must resolutely block our opponents and consume the vital strength of the Indian army. After that, we will take the next step depending on the actual changes in the battlefield situation."

"But there is one thing you must pay attention to: the time when the Indian side launches an offensive, the superior estimates, may be the coldest period of this winter, and you must be prepared to deal with all possible situations."

Chapter 240, Swing towards the Indian Ocean

"Comrades, what we are doing today is a technical adjustment to our border security."

Zhang Guohua came to the direction of Tawang on the eastern front, not only for inspection and condolences, but also to clarify the possible future war situation to the commanders and fighters of the front-line troops.

"Due to historical problems, the southwest frontier of our country, that is, where we are, has been preempted by foreign forces. These are the lands where Chinese people have lived and worked for generations. Everyone has stayed in southern Tibet for half a year. , I have also seen that there are vegetable fields cultivated by you in Dawang, Derangzong has better water and soil, and there are more vegetable fields there. This is a good land."

"It is our responsibility to move our borders from unsafe to safe, from foreign occupation."

"Security has two meanings. One is to take back the lands on the frontier that have been invaded by foreign countries, and the other is to make the foreign troops that invade our territory no longer dare to be enemies with us."

Liu Guangtong: "Commander, I understand. We need to scare and scare the Indian army so that they don't dare to invade our territory again."

Zhang Guohua: "Of course, the situation is difficult and the battle will be very difficult. Two regiments in the direction of Tawang and one regiment in the direction of Pasika. This is our current strength on the Eastern Front. The Indian army in front of us has nearly 6 troops. Yes. We have follow-up reinforcements in Cuona County, but not many. But you have to remember that our strength here is not three regiments, but three regiments plus four divisions."

"Three infantry regiments and four air divisions. Before we entered Tibet to suppress the rebellion, we had conducted air-ground coordination training. Now is the time to apply air-ground coordination in actual combat. Command, communication, and intelligence in battle, if you Neglecting these, it is three regiments fighting alone; if these tasks are done properly, there will be four divisions behind us to support us."

……

Beijing.

The fifth Long March-2 rocket was successfully launched, and Qian Xuesen returned to Beijing from Taiyuan.

The first three Long March-2 bombs were all successful, not only the whole world was stunned, but Qian Xuesen himself felt a little flustered.So the first launch failure came just in time. The second-stage rocket engine of the fourth launch vehicle shut down early, the rocket failed to enter orbit, and the second stage crashed into the East China Sea with the sextant-4 star.

As a result, the next launch had to be postponed. The Tianjin Rocket Factory sent an expert team to Taiyuan with testing equipment to conduct a physical examination on the fifth and sixth Long March-2 rockets.Aiming at the problem of early shutdown of the second-stage rocket engine, the relevant parts were checked again.

However, a week's comprehensive physical examination did not find hidden dangers in the design or flaws in the manufacturing process.

Five Hans simply took the rocket back to Tianjin for re-testing, but still found no hidden dangers or flaws.

Since the rocket wreckage fell into the 1900-meter trench in the East China Sea, it is certainly impossible to salvage the rocket fragments and analyze the parts.

When he was at a loss, Ren Xinmin remembered that each launch of the Taiyuan Space Launch Center had film records.I took out the film and played it back, analyzed it frame by frame, and finally found a suspicious place. Before the second-stage rocket was launched, the white smoke from the nitrogen tetroxide filling port was a little strange.

Ren Xinmin and Qian Xuesen found the filmstrips of the first to third rocket launches, and confirmed that there was indeed a difference in the thickness of the smoke that floated. Ren Xinmin boldly suspected that there might be impurities in the dinitrogen tetroxide injected during the fourth launch.

However, doubts and conjectures must eventually form solid evidence.A group of people went straight to the heavy chemical plant in Laizhou, Shandong, and dug out the dinitrogen tetroxide that was confirmed to be manufactured in the same batch as the rocket fuel for the fourth launch, but there were only two small barrels left.The technical team took a small amount of samples from it for testing, and there really were impurities that shouldn't be there.

After tossing back and forth for more than a month, the rocket team finally took a reassurance that the mechanical structure of the rocket itself is fine. As long as the quality of nitrous oxide is properly controlled, the rocket will still go to the sky as usual.

So, a week ago, the fourth navigation satellite was put into orbit.

……

"There is no report on the failure of the fourth rocket launch," Tang Hua said. "After a while, we will issue a summary press release. The focus will be on how to conduct detailed inspections and start troubleshooting in multiple ways."

"..." Qian Xuesen didn't know what to say for a while, "Okay, we can make up our own minds. What I think is that we need to further improve the overall reliability of the rocket, 90%, or even 95%. It can reach this number. At that time, I even dared to let the launch process of the launch vehicle be broadcast live on TV.”

Tang Hua: "I also have this idea. The success rate of American rocket launches is less than 50%, and they still don't broadcast live. I heard that Las Vegas even opened a market for the success of rocket launches. However, if Beijing TV can The TV signal broadcasted nationwide and turned into CCTV will be more interesting. To be honest, the central government hopes to launch a Dongfeng-3, a full-state ballistic missile flight test."

Qian Xuesen: "Dongfeng-3 has conducted two high-trajectory flight tests in the first half of this year. It has fired more than 2000 kilometers, which is actually equivalent to verifying its flight of 5500 kilometers. It can prove that the design of this missile is successful. Test again... …Actually, the launch from the northeast to Xinjiang is only 3500 kilometers away, and it still has a high trajectory, but the parabola is not as high as when it was launched in Wuliangsuhai.”

Tang Hua: "Commander Xiao of the Navy said that the Navy can try to send warships out on a long-distance voyage. We are conducting a test of launching from a land-based base to the sea."

"What? This is a full-scale test of ballistic missiles at sea?!" Qian Xuesen was surprised. "We don't have carrier-based aerospace measurement and control radars, aerospace measurement and control ships, salvage ships, and supply ships."

Tang Hua: "There are none of these, but no matter how many, some tests cannot be completed. The navy dispatched the cruiser Chongqing, 4 destroyers and 1 refitted salvage ship. The fleet assembled in Guangzhou, and then visited Malaysia from Guangzhou. Port of Aklang, refueling and replenishing here, and then sailing from Port Klang to the Maldives waters southwest of Ceylon Island. Dongfeng-3 launched from Wuliangsuhai will splash down here after flying 5500 kilometers. After the missile test is over , the fleet returns to Jakarta for a visit, and of course refuels and replenishes along the way.”

"This is flying over India, I know." Qian Xuesen said, "Then don't do the test, just roll it. The missile brigade just received one, just change the parameter coordinates. Do you want to salvage the warhead?"

"The navy said they want to try to catch it, but I think it's fine to let the warhead sink to the bottom directly. Or the warhead floats on the sea surface for a certain period of time. If we haven't found the warhead, it will automatically break the cabin and sink to the bottom of the sea. We can't catch it. No one wants to catch it."

……

The plan the Navy came up with was kind of crazy.

In fact, ballistic missiles can be fired all the way into the ocean without monitoring and controlling the fleet. This is what North Korea is doing now.However, if the blind shot fails, it is difficult to detect the cause of the failure.

"The Indian Ocean is a completely unknown area for us. Although the aerospace and missile departments can plan a 5500-kilometer route, we still have to obtain accurate sea charts of the South Asian subcontinent and the Indian Ocean. Otherwise, the missile will shoot over and hit a point. We can't tell from the point of impact whether it actually hit the target."

When the navy discussed the matter with Nie Shuai and Tang Hua, Nie Shuai raised a question.

Xiao Jinguang: "Let's base it on the charts we have now. The accuracy will be worse, but it will not exceed 1 nautical mile."

"1 nautical mile, 1852 meters, the theoretical circular probability deviation of Dongfeng-3 is less than 1000 meters," Tang Hua said, "Calm down a little. In this way, after the fleet arrives in the predetermined sea area, let the Chongqing ship be in a state of basically zero speed Next, carry out multiple satellite navigation and positioning, determine the latitude and longitude of the reference point, and then send it back to Beijing, then recalibrate the map, and then use this calibrated map to replan the course of the ballistic missile.”

Xiao Jinguang: "Can this be sold now? That's great. How long will it take?"

Tang Hua: "After the Chongqing ship sends back the latitude and longitude of the reference point, the parameters of the ballistic missile can be reset within 24 hours."

Xiao Jinguang: "Okay, let's stay on standby at sea at low speed for one more day."

In fact, the accurate map is still easy to solve. There are no supply ships, so I will go to the Indian Ocean...

If there is no supply ship, you will have to visit a country on the way and stop at the port to refuel and add water. Fortunately, China still has a few countries with good relations in Nanyang. Fortunately, this test is a long-range guided missile with a range of 5500 kilometers instead of 11000 kilometers. intercontinental missiles.

The supply ship is under construction, and the aerospace measurement and control ship has not yet started.Therefore, the warhead must not be tracked by radar, and can only be located by the radio transmitter of the warhead itself, so that there will be a short blackout period when re-entering the atmosphere.

However, if the main purpose of the entire test launch is to make India realize the reality, then a rough test launch process is acceptable.

……