Luo Yujuan laughed: "The second favorable condition is that the canyon terrain of the launch base is good, the geological structure is solid, which is conducive to the overall layout of the launch site. In addition, the high altitude, the ground launch facilities, technical equipment and tracking measurement, the communication of the communication, the communication of the communication. Faid, can meet the construction of the launch field. "
"Everyone knows that the launch conditions of the Rockets are relatively harsh, and the ground structure needs to be very stable. It is best to have a barrier to the wind and rain. Liangshan Prefecture is located on the rock base of the plateau. It is not said that various equipment can be set up at different heights around, and the initial state of monitoring and tracking the rocket is very convenient. "
It is not difficult to understand this truth. Everyone nodded and expressed understanding.
"Third, of course, it is good weather. When you watch the launch live broadcast, you often hear the word" launch window ", which refers to the time period of the rocket launch from the meteorological conditions." "
"The average annual temperature of Liangshan Prefecture is 18 ° C, which is one of the smallest regions in the country. It is as many as 320 days a day. More emitting windows "
"In short, Liangshan Prefecture has low latitudes, high altitude, low clouds, no pollution, high air transparency, and a suitable climate. This place is not justified. This 'Treasure Land' was found in the mountains in the north of Xichang, which is also the only space base in our current one that can launch the earth synchronous satellite. "
"Sister, what is a synchronous satellite?"
"There are many satellites created by people." Luo Yujuan explained: "These satellites will rotate around the earth, but as they are different from the earth, their horns are different, and some are faster than the earth. We are on the earth. We are on the earth. From the perspective, you will find that they are running on the west, and some turn slowly. When we look on the earth, we will feel that they are running east. "
"These satellites are attracted by the gravity of the earth. This force points to the heart. We call it the heart of the heart, and when the satellite is launched, the rocket given the satellite from the earth. On the track, if these two forces are balanced, it is necessary to solve it by the speed of the ground. "
Seeing that the baby was going to listen, Zhou Zhi quickly joined: "This is the principle of throwing stones with braids when everyone rushing sheep."
The braid is a type of stone. Turn it on both ends of the pocket pocket with two ropes. Put the stones in the leather pocket. The hand rope shakes the leather and lets the stones speak around the head, and then releases the rope One, the stone will fly out at a very fast speed after the stones are lost.
The children in this thing are familiar with the children in the hometown. Many of them are still masters who play this. Zhou Zhi asked everyone to recall the working principle of the braid, and then said, "The shorter the braids, the faster the speed of the rotation, and the longer the braids, the longer the braids need to be. The slower the speed that needs to be rotated, and the rotation of the earth itself, so if we want to stand on the ground to let the satellites look forward, we must place them on a lower track and make them look like Run back, put them on the higher track. "
Now the baby understands, Zhou Zhicai said to Luo Yujuan: "Teacher Luo, you continue to talk."
"Just now this brother is right," Luo Yujuan nodded and continued to introduce: "These places around the earth can place satellites. Far -ground orbit, the satellite on the near -ground track runs 'fast', the satellite on the remote orbit runs 'slow'. If we start with near -ground orbit, the remote orbit is the end, and the satellite will be moved slowly. There will always be a point in the middle. Its angular speed is exactly the same as the rotation speed of the earth, that is, they turn around the earth, just a precise day. " It is completely quiet, we call it a static satellite, and the orbit where it is located is the on -. "
"So the static satellite, also known as the synchronous satellite of the earth. It is characterized by a completely aimed at a place on the earth and never move."
"I know!" Azi Ricong felt that he knew again: "Synchronous satellites are thrown to our heads and never move, watching our country!"
"Not necessarily." Luo Yujuanle: "We can also throw the satellites to other places to let it move over the heads of other countries. Looking at them, the satellite can be divided according to the purpose and can become a spy satellite. "
"It makes sense ..." Zhou Zhi understands why aerospace technology is so important, and why a slightly developed country is trying to develop this technology. This thing is a cheating device!
However, because the technology is too complicated, only a few major powers have a club membership qualification.
"The height of this synchronous orbit is about 36,000 kilometers from the equator, and the line speed of satellites running on the track is about 3.08 kilometers per second. br>
"But one thing to pay attention to, just now our understanding is just a satellite just synchronizing on the equatorial plane." When the doll and the adults thought that he knew it, Luo Yujuan threw another question: "But we in China, in fact, we actually in China, in fact, we in China, in fact, we are actually in China. It is not an equatorial country, so most of the synchronous satellites we need actually run at a certain latitude height. "
"Therefore, the synchronous satellite we launched must be greater than 90 °, forming a retrograde ellipse orbit, a height of several hundred kilometers to 6000 kilometers, and the orbit of the inclination is slightly greater than 90 °. In this way, we can use the satellite overlooking the entire earth, including two levels. "
"Launching the Earth synchronous satellite requires higher technology. Generally, multi -class rockets are used to send satellites into near -ground circular orbit. This orbit is called an abolishing orbit. When the satellite flys over the equator, control the rocket to ignite again. For a short time, in a short time, Accelerating, the satellite will be based on the ellipse track, also known as the transfer of the orbital movement; when the satellite flys to the distant place, ignition the acceleration again, and the satellite will finally enter the relativelystable track synchronization track.
"To launch satellites, what we need to pay most attention to is the six elements of the track, that is, the running track of the satellite is determined by six main points, that is, the rail inclination, the corner of the nearly place, the promotion point of the red sutra, the eccentricity rate, the half long shaft of the orbit, and the satellite pass through the nearly place. Moment. "
There is no mistake, one, one, one, one, one, one, one, one 619, one book, one, one, one, one, one, one, a book!
"Now do you still think the Rockets experts are so fooled?" Azi held up the ears of Azi Ricong, who was so earthy: "continues to be arrogant?" (This chapter is finished)