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Qian Xuesen: "Very good. When is the launch time window for Baikonur? Has the satellite launch time been determined?"
"It is now 1:2 pm local time. Baikonur is the launch window from noon to late at night today. The scheduled launch time is 35:[-] pm local time, which is about an hour later."
Qian Xuesen raised his wrist to look at his watch.
Tang Hua took out a palm-sized thin board from his bag, propped it on the conference table, pressed the buttons on the thin board a few times, set it to 6:35 p.m., and then switched to a countdown.
Qian Xuesen, Ren Xinmin, Sun Jiadong, Zhao Jiuzhang:?
"Quartz electronic clock is a quartz crystal resonator made of quartz material. Because its frequency is very stable, it can be used as a timing reference." Tang Hua said, "This display system, called liquid crystal segment code tube, is still very Crude design, but it works just fine.”
Zhao Jiuzhang: "I have seen a quartz clock in a book, and it is much more accurate than a mechanical clock, but this quartz clock is not a simple one."
Tang Hua: "What I mean by simple is that it is too big. I hope it can be made into the size of a wristwatch in 60 or 61. But the key is the cost. Watches are expensive or cheap. If the price can be lowered to be the same as that of mid-range mechanical watches, then the world watch industry may have to reshuffle. However, in 60 and 61, TN LCDs could only be used as segment code displays for watches, and complex LCDs would have to wait. .”
Sun Jiadong: "So before the mass production in 61, this thing was a black technology trialed on a small scale?"
Qian Xuesen: "The Ministry of Electronics and Information Industry has a lot of black technology. Their computer station A area, after entering it, it is like going to the future world."
Several people in the conference room were chatting while staring at the quartz clock on the table. The upper part of the screen displayed Beijing time in real time with a row of digits, and the lower right was a countdown, showing how many minutes and seconds remained until 6:35 p.m.
"Jiadong, have you had dinner yet?" Ren Xinmin asked.
Sun Jiadong: "Not yet, why?"
Ren Xinmin: "That's just right. There is a guest house in Anhui opened in Xisi. The beef and mushroom boxes inside are pretty good. Let's go there at 6:50, just in time to catch up."
"The rocket was launched at 6:35. Are you sure that the launch of the Moon rocket will fail?" Qian Xuesen said.
……
"Minister Tang, Director Qian, the rocket is ready in the last minute. Korolev and the heads of the Soviet Council of Ministers all stood up."
"The rocket is counting down."
"Rocket fires. Flight normal."
"It's normal for the booster to fall off. The rocket is flying higher and higher, and it's almost invisible."
"The rocket is beyond the visual range of the naked eye. The radar remote control signal in the hall shows that the rocket is flying normally. The launch should be successful."
Tu Shancheng, who was broadcast live in Baikonur, was very excited.On the Beijing side, everyone in the conference hall is also very happy.
"The rocket is normal. After the third stage burns out, the satellite body and satellite thrusters start to work, so it has something to do with us." Tang Hua said.
Qian Xuesen drew conceptual diagrams on the blackboard in the conference room.A big ball of the earth and a small ball of the moon, Qian Xuesen drew a flight path of Lunar Satellite [-]A with chalk.After the satellite was launched into orbit, it first became an artificial satellite orbiting the earth and flew back in a circle. When it was over the Soviet Union, according to the current flight status of the satellite, it sent instructions to the satellite to let the rocket engine re-ignite and accelerate to fly to the moon again.
"Actually, this is not the most fuel-efficient flight path." Qian Xuesen said.
Qian Xuesen drew a second line on the blackboard, which is much more complicated than Luna 6A.The satellite first became an artificial satellite around the earth, and then every time it circled the earth, the rocket engine of the satellite was ignited once, so that the orbit of the satellite became more and more elliptical, the perigee did not increase much, and the apogee rose sharply, and finally at the perigee of [-] kilometers, On the orbit of more than [-] kilometers at the apogee, find the cut angle and accelerate for the last time, and the satellite will go straight to the moon and become a moon satellite.
Tang Hua: "It's like swinging on a swing, swinging towards the moon little by little, and finally let it be naturally captured by the moon's gravity. Although it takes a little longer on the road, it can maximize the propulsion efficiency. It is suitable for unmanned lunar exploration vehicles. "
Qian Xuesen: "Should we also throw a small probe on the moon?"
……
The fifth Luna rocket launch was considered a success.
After 98 minutes, Luna [-]A came back around the earth. The radio positioning system and radar of the Soviet Union captured the target, quickly calculated its current orbital parameters, and sent control instructions to it according to the orbital parameters.Then Luna [-]A will accelerate again, and in the next few hours it will reach the second cosmic speed and fly towards the moon.
Lunar [-]A completed the acceleration, aligned its direction, and started the three-day earth-moon journey, which means that China's custom-made on-board communication-control system has withstood the test. Tu Shancheng also received a warm welcome from the full control center in Baikonur. Applause for congratulations.
The six satellites Luna [-] and Luna [-] are all hard landing lunar exploration satellites, and they only have radio transceivers.Luna-[-]A is much more complicated. It will become a satellite of the moon, and then take pictures around the moon.
Of course, the Soviet Union did not have CCD digital imaging. Tang Hua’s CCD is still in the laboratory stage and cannot be used. The camera system of Luna 38A is more like the current live TV system, but it transmits static images. Convert the picture into an analog electrical signal and send it back to the earth from [-] kilometers away.
But it is clear that the images sent back by taking pictures in this way are very blurry, and the images captured by the astronomical telescopes on the earth that are slightly better are clearer than those captured by Luna [-]A.
Therefore, the main shooting area of Luna [-]A is the back of the moon.It's not to find the Decepticons, just to show that I can do things that I can't do on the ground.
……
"Yo! American Pioneer-4 made it!"
Ren Xinmin walked into the conference hall with the telegram.
Tang Hua: "It's really not easy. Finally, the first American spacecraft to leave Earth's orbit appeared."
Qian Xuesen: "Let me see...the launch was launched with the Juno-2 rocket, and the satellite is Pioneer-4, which was made by JPL."
3月4日，月球号火箭发射，3月6日，朱诺-2带着先驱者-4号升空。
That is to say, Luna-4A and Pioneer-3 are on the way to the moon.The space race is so lively, it's no wonder that Lao Qian started thinking about how to use Dongfeng-[-] to launch a lunar probe two days ago.
Luna-4A will be moored into lunar orbit to become a moon-orbiting satellite. Pioneer-[-] has no intention of orbiting the moon. Its goal is to skip the moon at close range, and then become a space vehicle floating in the solar system.
Qian Xuesen: "For the exploration of the moon, can we also use some relatively low-cost methods to launch a test vehicle?"
Tang Hua: "How much money is spent is second. The key now is that the Soviet Union has completed the lunar exploration project. It really doesn't make much sense for us to repeat it. We can basically get the data obtained by the Soviet Union. Therefore, to engage in lunar exploration For engineering, we must first come up with a new way to play, so that it is meaningful to spend money.”
……
Zhongnanhai.
The Indian ambassador to China, Pathasarathi, received a domestic telegram and urgently asked to see Mr. Chen, Minister of Foreign Affairs, overnight.
"Dear Mr. Foreign Minister, I was ordered by Prime Minister Nehru to represent the Republic of India to come to your country to make representations on major diplomatic events."
Patasarathi's face was flushed red. The telegram sent by Nehru asked him to negotiate with the Chinese side immediately, and he also stated the requirements for negotiation, but the attitude and bottom line of the Indian side were not clearly stated during the negotiation, which made him very upset. It was difficult, but he had to do what was said in the telegram, so he had to go to Zhongnanhai overnight to meet Boss Chen, and even the draft of his speech was typed out on the way.
"After investigation, on February 2th and 25th, your country's armed forces crossed the Himalayas, entered Tawang, Derangzong, Bangdila and Pasika, fought with the Assamese army of our country, and captured Our country's armed men. Your country's actions violated the 26 tentative agreement between the two countries on the disputed border. It was you who violated it first."
"This matter will seriously affect the relationship between China and India, so we request that you immediately withdraw your armed forces from the above-mentioned towns, release our captured personnel, and guarantee that similar incidents will not happen again in the future."
Chapter 211, my lord, times have changed
That night, Indian Ambassador to China Pathasarathi urgently met with Foreign Minister Mr. Chen, and Indian Foreign Minister also urgently summoned Chinese Ambassador to India Pan Zili in New Delhi.
The two meetings with India did not get the desired answer.
"The Chinese army is fighting on China's own territory. Whether it is Tawang, Derangzong, Bandila or Pasika, it has been a part of Tibet since ancient times, and China has undoubted sovereignty over it."
"The Dawang area is not only a part of Tibet, but also a religious holy place in Tibet. In 1681, the fifth Dalai Lama Ngawang Luosang Gyatso ordered the establishment of the Dawang Temple here. The sixth Dalai Lama Luosang Rinchen Tsangyang Gyatso Born in Tawang, most of the current residents of Tawang believe in the Gelug sect of Tibetan Buddhism. In 1957 and 1958, more than 100 Tawang residents went to Lhasa for pilgrimage.”
Mr. Chen certainly did his homework in advance.
"In the Qing Dynasty, Zhao Erfeng carried out land reform in the border areas of Tibet, established Zayu County in Zayu, and set up border markers in Yabiqugong. These are irrefutable facts."
But Boss Chen didn't say anything to death.