Dongfanghong joke video daquan

Dongfanghong-1 is still in orbit. The reason why it has lost its power for 50 years is that the orbit of Dongfanghong-1 is unusually elliptical, with a perigee of 44 1 km and an apogee of 2368 km, which greatly reduces the friction suffered by the satellite for a long time.

In addition, the satellite is a star with a diameter of only 1 m. It has no solar panels and works on its own batteries, so its windward side is much smaller.

These reasons have caused the orbit attenuation of Dongfanghong-1 satellite to be very slow, and it can still run in the sky even if it is unattended. However, the orbit of the east is also attenuated. According to observations, the current perigee height is 439 kilometers.

According to this decay rate, it is estimated that it can run for hundreds of years, but in the future, this satellite will definitely enter the earth's atmosphere at perigee and burn out.

Extended data

Structural design of "Dongfanghong-1" satellite;

The instrument cabin of Dongfanghong-1 satellite is cylindrical and installed in the middle of the satellite. A sealing ring is installed at the joint between the hatch cover and the chassis to ensure the sealing of the instrument cabin. The instrument cabin base is the main load-bearing structure part of the satellite, and it is also an important part connecting the satellite and the launch vehicle. It not only bears the weight of the satellite itself, but also bears the thrust of the launch vehicle during the launch.

According to the overall arrangement of the "65 1" mission, the Institute of Chemistry of Chinese Academy of Sciences is responsible for the development of the base of the satellite instrument cabin and the sealing ring for the satellite. The instrument cabin base used advanced composite materials at home and abroad at that time. Because of the complex structure and shape of the base, it is difficult to manufacture.

The base has been used by the "Dongfanghong-1" satellite, which has borne the main load of the satellite and experienced harsh environments such as overweight, noise and space irradiation, and successfully completed the task. On the second satellite "Practice 1", the pedestal was also used, which increased the bearing weight, but the pedestal still completed the bearing task.

Baidu Encyclopedia-Dongfanghong-1 Satellite