Which satellite does Shenzhou 8 dock with 20

There are four main steps in the docking of Shenzhou-8 and Tiangong-1 to assemble into a space station prototype space rendezvous.

Ground guidance - that is, after the two spacecraft are in orbit, the distance between them is gradually shortened through the guidance of the ground tracking and control station. Automatic homing - when the distance is 100 kilometers, "Shenzhou 8" began to capture "Tiangong-1", which is an automatic tracking and capture process, allowing "Shenzhou 8" to shorten the distance with Tiangong through several orbit changes. Final Approach – When the two are between 100 meters and 1 meter apart, not only must the distance, speed and attitude of each other be controlled, but the relative velocity must also be maintained within 1 meter per second in preparation for docking.

Docking and closing - at this time, the two huge aircraft are only a few dozen centimeters apart in space, the relative speed is about one meter per second, and the lateral relative error is not more than 18 centimeters, so that they can be tightly connected.

The whole docking process must ensure that the engagement is stable, and the attitude of the vehicle in orbit cannot be affected by violent shaking. Although the relative speed of the two aircraft is not large during docking, it is still very difficult to achieve accurate docking between the two active bodies in a complex space environment filled with high-density plasma, free oxygen and ultraviolet rays.

It's not a satellite, it's a spaceship.

Spaceships are actually just nice to say.

In fact, it is to send people, equipment and supplies from the ground to space. A large jar that then sends people and space products back to Earth from space.

It's like a small boat that ferries back and forth.

China has already made it preliminary, and China has preliminarily mastered the ability of space rendezvous and docking.

When Shenzhou-8 arrived at the berthing point 30 meters away from Tiangong-1, the Beijing Aerospace Flight Control Center made a final confirmation of the docking readiness.

Subsequently, Shenzhou-8 slowly approached Tiangong-1 at a relative speed of meters per second. Get ready to kiss, hug in space!

The ship turned and finally approached. Docking mechanism capture. The docking mechanism is pulled back to begin, and the docking mechanism of Shenzhou 8 is pulled back to begin.

After technical actions such as contact, capture, buffering, correction, and pullback, the Shenzhou-8 spacecraft activated the active docking hook and firmly locked the passive docking hook on the Tiangong-1 target vehicle. The two spacecraft are tightly connected into a combination and fly in the vast space with a graceful attitude.

The first rendezvous and docking of Tiangong-1 and Shenzhou-8 were a complete success.

High school physics is the relative velocity.

The period of an artificial satellite around the Earth and the rotation of the Earth's rented mountain are called geostationary satellites.

Shenzhou-8 belongs to the second phase of the space laboratory of the space vehicle, and the first space laboratory in China and Qinguo has been built, preparing for the third step of China's aerospace construction of the space station.

No, geostationary satellites are usually communication satellites, with an altitude of 35,786 km, and in order to maintain the stability and reception range of the broadcast or rotten transmission beam, the satellite and the geosynchronous operation of the sliding brigade, the orbit changes are small. The operating period is the same as the rotation period of the earth, the time of circumnavigating the earth is 24 hours, observed from the ground, the satellite is immovable, and the manned spacecraft is a vehicle operating in low-earth orbit, with an orbit 200-1500 kilometers from the earth. For ground observations, satellites are mobile

Shenzhou-8, the eighth of China's "Shenzhou" series of spacecraft, is an unmanned target vehicle, which is to prepare for the docking of China's space station, and is also a representative of China's Shenzhou series of spacecraft entering mass production. The Shen-8 will be launched on the Long March-2 FG rocket, which is expected to be launched in the second half of 2011 after the launch of Tiangong-1. After the launch of Shenzhou-8, it docked with Tiangong-1 and became a small space station.

China's Shenzhou series of spacecraft will be basically finalized by Shenzhou-8.

Actively and actively carry out business activities and center consulting**.

At 5:58 a.m. on November 1, 2011, the Shenzhou-8 spacecraft was launched from the Jiuquan Satellite Launch Center. **Member of the Military Commission and Commander-in-Chief of the Mission*** announced: According to the report of the Beijing Aerospace Control Center, Shenzhou-8 has entered the scheduled orbit, and the launch of the Shenzhou-8 spacecraft has been a complete success.

The Shenzhou-8 spacecraft, which carried the first rendezvous and docking mission of China's manned space program, ignited from the Jiuquan Satellite Launch Center at 5:58:07 on the 1st and began the long journey of chasing Tiangong-1.

The Long March-2F Yao-8 rocket, which saw off Shen 8, spewed out a brilliant tail flame like a salute flower, blooming over the Gobi Desert at dawn in autumn.

At 6:07:53, the ship and arrow separated, and Shenzhou 8 entered the predetermined orbit. Subsequently, the commander-in-chief of China's manned space program announced the successful launch. At this time, Shenzhou-8 and Tiangong-1 were nearly 10,000 kilometers apart.

In the next two days, Shenzhou-8 will complete rendezvous and docking in the sky over China along the road paved by the land, sea and space-based "trinity" tracking and control network, forming a "space dance partner" that embraces each other. At that time, China will become the third country in the world to independently and fully master the technology of automatic rendezvous and docking in space.

Thirty-two days and eight hours ago, China's first target vehicle, Tiangong-1, lifted off from the same launch tower. After flying 485 times around the Earth, China's largest manned spacecraft has been lowered into orbit about 343 kilometers above the ground for rendezvous and docking, waiting for Shenzhou-8 to come to rendezvous.

Meeting in space The rendezvous and docking that people give romantic imagination to is by no means a smooth road in the eyes of Zhou Jianping, chief designer of China's manned space program. The Shen-8 spacecraft had to go through 5 orbit changes, 4 "brakes", and nearly 1.3 million kilometers before it could "approach" Tiangong step by step.

Two spacecraft flying at a speed of 7,800 meters per second should accurately rendezvous in space orbit, and the accuracy should be controlled within a dozen centimeters, which is like "threading a needle through space," which is much more difficult than we often say "penetrating a needle in 100 steps." Zhou Jianping explained.

The first level to ensure accuracy is the launch. Cui Jijun, commander-in-chief of the launch site system, said that the launch of the Shen-8 achieved a "zero window", that is, it was launched on time when the positive and negative errors could not exceed 1 second, ensuring that the spacecraft was accurately put into orbit. The sensors on the Shen-8 spacecraft and Tiangong-1 that have reached the international advanced level will ensure the seamless docking of the "embrace" of the two.

According to the project plan, before the end of 2012, China will also conduct rendezvous and docking tests between the Shenzhou 9 and 10 spacecraft and Tiangong-1, at least one of which will be manned. This means that after docking with Shenzhou-8 twice, Tiangong-1 will continue to operate in orbit for two years.

According to reports, the astronaut crew for the manned rendezvous and docking mission has completed the preliminary selection, and the crew, including two female astronauts, is carrying out rendezvous and docking mission training as planned.

As the best platform for human space exploration, the space station is the highest goal of the "three-step" strategy of China's manned space program, and the mastery of rendezvous and docking technology will lay a solid foundation for China's construction of the space station.