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"Of course, the best way to transmit information is through synchronous communication satellites."

Tang Hua's schematic diagram is probably a conceptual diagram of an infrared remote sensing disaster reduction satellite between DSP-1 and DSP-2.Of course, the entire map is still indispensable for synchronous communication satellites.

"Normal forests do not have high-temperature areas. If the infrared remote sensing and disaster reduction satellite senses that there are large areas in the forest near Yukota, Siberia, with a temperature higher than 500 degrees Celsius - this is something that can be carried on the satellite. The computer can do simple judgment and analysis—then it can be confirmed that there is a forest fire here, then the fire-fighting plane can take off, and the fire-fighting team can also be dispatched immediately.”

Yegodnikov read this introduction and found it interesting.

"Infrared remote sensing like this can be applied in many occasions." Tang Hua continued, "The temperature trigger threshold of the infrared telescope can be adjusted, for example, it can be adjusted up to 1500°C. Our satellite found a fire somewhere in Alaska. The wildfire with a temperature exceeding 1500°C quickly spread above the atmosphere, and the fire is moving towards the Soviet Union at a speed of 6-7 km/s..."

Nijlin: ? !

……

"Commander Biryuzov, hello to comrades in the Defense Air Force and Air Force."

Yesterday Nejielin signaled Tang Hua to stop, and I went to call someone.

There were a few more people in the meeting the next day.

"Well, then I won't talk about forestry remote sensing and disaster reduction today. Infrared remote sensing is a passive reconnaissance mode, so it is a wide-area reconnaissance mode, unlike radar or optical detection that can only scan a small area."

"If an enemy missile is detected, how should we intercept it?" an officer asked.

Tang Hua: "Even if there is no way to intercept, we can still have enough time to decide whether to take other countermeasures, such as launching missiles at the enemy."

Biryuzov: "What if this is not a missile launch, but just the deflagration of some chemical warehouses on the ground?"

Tang Hua: "The onboard computer can make simple logical judgments to rule out these situations. For example, the height of the heat source—it actually flew out of the atmosphere, and the speed exceeded Mach 10, etc."

Biryuzov: "I found out that you have planned two and a half generations of this satellite. What are the subsequent improvements?"

"In the future, the sensitivity of infrared devices will be improved. We can launch 1.5-generation missile early warning satellites with a higher orbit, no, forestry remote sensing satellites, so that its detection range will be larger. As for the second generation, our first-generation product is called The second generation of forestry remote sensing satellites can be called agricultural production estimation satellites.”

……

"Let me go, let me go, give me a place to sit."

Tang Hua: "Hello, Minister Shcherbach, and comrades from the Ministry of Agriculture."

Deputy Minister Shcherbak brought several officials from the Ministry of Agriculture to the meeting. Each of them moved a small Maza and sat down in the conference room.

"The topic we're going to talk about today is really agricultural production estimation. It's all about agriculture. Comrade Biryuzov, do you still want to continue listening?"

Tang Hua's persuasion had no effect, Biryuzov and the Air Force officers shook their heads together.

"Here is an experiment to mention first. Since 1955, my country's Ministry of Agriculture and the Air Force have cooperated to use a high-resolution infrared remote sensing system to take aerial photos of the same farming area at low altitude and low speed. This work lasted for a year Zero ten months."

"Tests have proved that through infrared monitoring, identifying the changes in the wave bands of farmland at different times can obtain various data. These include: whether the cultivated land is soaked in water; whether there are diseases and insect pests; whether a large area is dead; whether it is affected by low temperature; ; and even the final state of the crop before harvest, we can estimate the fullness of the rice grains through the spectrum."

"Satellites can obtain these data, and several such satellites working together can theoretically obtain the agricultural telemetry data of the whole Soviet Union. Combined with the sown area, the agricultural output of the year can be estimated."

"Just now I was talking about the sown area. If the agricultural production estimation satellite is formed on a large scale, how much is the sown area of ​​arable land in the country, and whether the planned crops are planted in the arable land, there is no need for the states and collective farms to measure and report by themselves. Satellites are more reliable than humans. "

Shellback: ...

……

"I talked about this satellite for three days, and I was almost delayed watching the rocket launch." Qian Xuesen, Tang Hua and his party were on their way to Baikonur, "It's rare to come across the launch of the largest carrier rocket on Earth. It would be a pity if people in the Soviet Union did not see it."

Tang Hua: "I'm pinching time. If there are still many topics on the last day, I will solve them quickly and simply."

Qian Xuesen: "Biruzov's last question asked whether the agricultural production estimation satellite can find underground fortifications and bunkers, as well as ground troops disguised by air defense. Fortunately, this question has not been developed. If it is launched, the Army will have to send it the next day A group of people came to sit in the small Maza."

时间是5月8日，离发射已不到半小时。拜科努尔1号发射架上，新一枚8K71PS火箭已经竖立在那里。

When the delegation was brought to the launch site by Marshal Nedelin, the 8K71PS rocket was assembled and moved as a whole in the workshop.The rocket was assembled horizontally in the factory building, moved out horizontally, and then turned 90 degrees by a giant dumper to face directly above the launch pad.After being erected, it is fixed and injected with propellant.

"Assembly lying flat and erecting in front of the launcher is not a good method," Tang Hua said, "There will be some hidden dangers, such as some parts will fall into the cavity, and some parts will have a very small probability Misfit."

Qian Xuesen: "When it should be installed, it should be in a vertical state. It is called...a vertical factory building? That's the name. After installation, the rocket will use heavy rails to move hundreds of meters to the launch pad, so that the whole rocket does not need to be turned upside down. gone."

……

"I don't know if it will work this time, but don't blow it up."

2 minutes before launch.

Tang Hua took a look. The delegation was in a bunker 800 meters away from the launch pad, and Marshal Nedelin was in another bunker 400 meters away. They should be fine.

The overall launch success rate of 66% should be okay.

The rocket ignites and takes off.The first stage and booster are almost the same as the Soyuz-21 in the 2st century, and the appearance tenaciously maintains the traditional style.Flying to a high altitude, the booster detaches, and the four pointed boosters fall off simultaneously, forming a standard cross shape in the air in an instant, which is also the signature scene of the Alliance Rocket.

With the first stage and boosters off, the rocket flew out of sight.Man-made satellite No. [-], which is Korolev's D-type star, should be successful...

Chapter 180, No need to invent the atomic bomb again

Crimea, Republic of Ukraine, Yalta.

A house, facing the sea, spring is warm and flowers are blooming.

Sergey Pavlovich Korolev has been exhausted for the past year. Since the Soviet Union followed up the American space race in July 57, he has been busy with the first and second artificial satellites, and then He also devoted himself to the work of launching the artificial satellite No. 7. In April 1958, he finally fell ill and was arranged to go to the shore of the Black Sea for treatment and recuperation.

"Greetings, Comrade Korolev."

"Academician Tang, hello, Director Qian, hello."

Tang Hua and Qian Xuesen met Korolev here.

Qian Xuesen: "Sputnik [-] has just been successfully launched. This is the largest man-made object launched into space in human history. Congratulations."

"You also launched artificial satellites shortly after the Soviet Union, and you succeeded with very little resources and manpower, which is quite remarkable," Korolev said, "and among the first artificial satellites launched by the Soviet Union, China and the United States , your satellite is the most interesting, if you evaluate it in terms of propaganda and political effects, it is almost full marks."

Korolev placed a large radio receiver on the first floor of the villa, and the antenna was connected to the window with wires. "Ah, I looked at the timetable, the forward No. 15 armor is still above us, and there are still [-] minutes before leaving the receiving range."

Turning on the receiver, the music score of "Dongfanghong" was played, and the sound was quite clear.

Tang Hua: "At the meeting in Moscow, I proposed several artificial satellite architectures and plans that are more important to production and life. I hope that China and the Soviet Union can cooperate in launching these satellites. The high-level officials in Moscow should be discussing it."

Korolev: "I have heard. Geostationary satellites are a bold idea. What you want is not only a satellite with a period of 24 hours, but also a geostationary satellite with an orbital inclination of zero. Therefore, the difficulty lies in how to place the satellite accurately. Geolocation in a geosynchronous orbit requires high precision in radiolocation and control systems."

Qian Xuesen: "From a low orbit of a few hundred kilometers to a synchronous orbit of 35800 kilometers, the launch vehicle must endow the satellite with greater energy. According to my estimation, the capacity of the same rocket in a synchronous orbit is only equivalent to that of a low-earth orbit. One-half to one-third of the capacity. The rocket we are designing has a capacity of only 1 to 1.4 tons in low-Earth orbit, and 500 kg in synchronous orbit, which is too small."

Korolev: "That's natural. I have calculated that if the Luna rocket launches a geosynchronous orbit satellite, it can only transport 1.5 to 2 tons of material there. The total weight of your next-generation rocket is... 80 tons , it is already very good to be able to transport 1 to 1.4 tons of material to low-Earth orbit."

Qian Xuesen: "Comrade Korolev, if you want to land on the moon and return, then the capacity of the Luna launch vehicle may not be enough. After all, although the moon is small, if you want to get out of its gravitational range, you need the lander to carry fuel and A rocket engine is needed to lift off and return to Earth."

Korolev: "Landing on the moon is a very long-term plan. Our current plan is to land on the moon in 1978, and we are still fighting to send people into space."

"A total of 9 Lunar launch vehicles have been manufactured?" Tang Hua asked another question, "Are all of them going to be used for the first phase of lunar exploration?"