roccoschili Page 585
Page 585
Wang Xiji: "I originally thought that a tape recorder or record player would be welded into the satellite."
Tang Hua: "The environment in space, vacuum, this may not be a big deal, close to absolute zero, all kinds of high-energy cosmic rays, tapes or records are too difficult to work for a long time, less than a month after delivery, the tape will be degaussed, and the record It will be brittle...Of course, it doesn’t mean that there is no problem with space on the chip, but it’s much easier for us to shield the chip than it is to shield the tape recorder or record player.”
Wang Xiji: "What does the music from this chip look like? Can a small fingernail play music?"
Tang Hua: "Strictly speaking, what is recorded in it is not a song, but... a score. Let's try it first."
Tang Hua turned on the computer in the laboratory and entered the command to open the files originally stored in it.The speaker of the computer called "Didi", and the pitch was high and low, "Didi, Didi, Didi..."
"Is this the Internationale?!" Wang Xiji said.
Tang Hua nodded, "There is another song that is ready."
The second song is the national anthem.But slightly different from the Internationale, the sound of the national anthem is much richer than the Internationale.
"Wow, the national anthem seems to have an accompaniment."
Tang Hua: "It is simply divided into several frequency domains, so that the sound produced by the computer looks like several musical instruments are playing at the same time. Because it is necessary to describe the sounds of different frequency domains and the time of appearance, the music file of the national anthem is more complex than The Internationale is big. Maybe one national anthem will take up one chip, and several other songs will be in another chip.”
……
What can a satellite of fifty or sixty kilograms do?
If there is technology in the 21st century, this kind of satellite is already bigger than a "micro-satellite" and belongs to the category of small satellites. It can even install a camera to take pictures of the ground, and then transmit the digital image files to the satellite through a synchronous communication satellite. ground.Although it is not comparable to the resolution of professional reconnaissance satellites, it is also quite interesting.
But there are neither compact digital cameras nor geostationary satellites to provide relays.
Make a small electronic reconnaissance satellite?It can be done, but the listening frequency band can only be very narrow, and the antenna size is not enough, so the effect is not good.
Verify the clock-slow effect of the theory of relativity?This, Tsinghua University and the Institute of Physics of the Chinese Academy of Sciences are developing a cesium atomic clock. The first-generation product is about a cylinder with a height of 2 meters and a thickness of 0.5 meters, plus an instrument cabinet.It cannot be measured with a quartz clock, and the accuracy is not enough.
From Beidaihe to Tianjin and back to Beijing, Tang Hua thought all the way and finally decided: the first artificial satellite should be the simplest radio transmitter.Powered by solar energy, the lifespan should be as long as possible.
For scientific research institutions, the electromagnetic waves sent by the satellite are transmitted to the ground, and the changes in the waveform can be measured to find out what exists in the space between the height of the satellite and the ground, such as the interference of the ionosphere, radiation belts, and solar rays on the radio waves. , all of which can get data from the first artificial satellite.
For the general public, radio amateurs (household radios are temporarily unavailable, at least a professional antenna must be plugged in) can receive the radio waves sent by satellites and play some music, which is much better than the monotonous "blah, blah, blah".
Of course, there must be a gimmick, that is, this satellite can store wave table music files of 10 songs.
……
Tang Hua and Xu Lifeng worked together in a division of labor, and the chip was plugged into the "mainboard" and then soldered to death.Two circuit boards completed, this is the core of the satellite.The two circuit boards are actually identical, and two circuit boards are installed on the satellite at the same time, one of which is a backup.
"Now... test it."
The test Tang Hua mentioned was not only to test the music stored in the ROM on the circuit board, but also to test the radio transmitter together.
The radio transmitter has been installed on the roof of the office building of the computer office. Xu Lifeng connected the wires to the two contacts of the circuit board, and then pressed the switch, and the circuit was completed.
The moment the switch was pressed, the beeping sound of the Internationale came from the radio used as a test tool in the room.
"The signal quality is not bad, and the power of the small wireless transmitter is quite high." Tang Hua said.
Wang Xiji: "This is done according to the design power of the solar panels. If the parameters of the solar panels in Changchun are correct, the transmission power will be so high."
……
Everything is on schedule. On August 8, the summer heat in Beijing had just passed, and the main functional components of the satellite were made. Then the next shielding layer, satellite assembly, testing, and production of the three satellites will all proceed normally.
"Minister Tang."
Lao Liu, the secretary of the Computer Institute, was knocking on the door of the laboratory.
"The secretariat of the Ministry of Heavy Industry called me just now and said that Commissioner Huang Jiqing wanted to find you. You are not at the Ministry of Heavy Industry, so I want to confirm whether you are in the computer office. If confirmed, Commissioner Huang will give you a call later." Make long distance calls."
Tang Hua: "Understood. I just happen to be free now, and Commissioner Huang can call."
……
"Minister Tang, oil is coming out of the Songliao Plain!"
Huang Jiqing's voice on the phone was still agitated.
"This is another major event in China's oil exploration! Congratulations," Tang Hua said, "It seems that your new theoretical system is correct, so my computer numerical simulation is also accurate."
"This is a large oil field, definitely bigger than the Liaohe oil field. The area where we just produced oil is a large oil area several kilometers square, and according to the previous detection of seismic wave reflection, there are at least a dozen similar signals in this area. The characteristic areas, these may be oil areas, maybe, the reserves of this oil field are higher than that of Shengli Oil Field!"
Of course, Daqing Oilfield is bigger than Shengli Oilfield.
"Do you know the center of this oil field? Have you figured out a name for it?"
Huang Jiqing: "The chairman instructed in Beidaihe that the first oil well was produced on August 8, which happens to be the 1th anniversary of the founding of the Chinese People's Liberation Army. Let's call it Jianjun Oilfield!"
Tang Hua:? !
Huang Jiqing: "Finally, I would like to apologize to you. The car you lent me has been used for more than a year. I have been using it carefully before, but it is the first one when I go to Songnen-10 well. During the inspection of the oil wells that produced oil, there was a flood..."
Chapter 159, Fairing
It seems that not only Li Siguang is the king of car destruction, but also Lao Huang...
I don't know if this will become a regular ceremony of the Ministry of Geology. Every major geological discovery will lose a Land Rover: one for the [-]-ton uranium mine, one for the Shengli Oilfield, and one for the Jianjun Oilfield.
Tang Hua still has three Land Rovers, one is sent to Wuliangsuhai (although it is rarely driven once a year), and two are stationed in Beijing.In addition, the Land Rover that Li Siguang asked for the uranium mine to destroy last time belonged to Rong Yiren. Tang Hua later bought a new car and asked to return it to Rong Yiren.
Huang Jiqing hasn't returned to Beijing yet, not because he is afraid of seeing Tang Hua, but because he wants to continue geological exploration in the Anda County-Sartu area, but it should be soon.The discovery of large oil fields in Northeast China is equivalent to double insurance for China now—any oil field in Northeast China can guarantee the country's current industrial consumption. From the perspective of national defense geography, the Northeast may be safer than the Bohai Sea.
Time flies so fast when you are busy working on satellites.The core of the first artificial satellite is welded out, and the time is at the end of August.The chairman and prime minister came back from Beidaihe, and after knowing the basic design and functions of the satellite, he made a final decision on the song played by the satellite:
The Internationale starts, then the Chinese national anthem, and then the national anthems of all the socialist countries.
The chairman decided on the name of the satellite, which is "Forward One".
Fine……
It must be interesting to have this satellite humming the Internationale and the March of the Volunteers over the United States and Western Europe every day.
……
"Director Qian, Jia Xian!"
After Zhu Guangya was busy with the satellite team for a month, he was sent back to his original unit, the Institute of Atomic Science and Technology of the Chinese Academy of Sciences.Zhu Guangya, who came in pushing a four-wheeled cart, saw Qian Sanqiang and Deng Jiaxian at a glance.
Deng Jiaxian: "Why, Guangya, you have only been seconded for a month and a half, and you were returned by Minister Tang?"
Zhu Guangya: "Go, go, whoever has been returned, I'm here on business!"
Qian Sanqiang's attention was already on the small cart that Zhu Guangya was pushing. "Guangya, is this the artificial satellite we are going to launch into space?"
"Yes, Director Qian," Zhu Guangya said, "This satellite is a prototype for testing. It weighs 55 kilograms. It has a radio transmitter and is powered by solar energy. The built-in chip can store 12 songs. More than 20 minutes. I designed the radiation shielding layer of the satellite core components, and now I have to take it back to borrow the reactor for testing.”