The launch of Chang 'e V was very smooth. First of all, Chang 'e V was launched by the Long March V carrier rocket and left the earth for space. After Chang 'e V was separated from the launch vehicle arrow, it spread its solar wings and entered the scheduled orbit to head for the moon. In order to reach the lunar orbit smoothly, it is necessary to make several orbit corrections. After successfully entering the lunar orbit, it will fly around, find a suitable entry place and brake to enter. Finally, it will brake for a day at a distance of 200 kilometers from the moon and then enter the moon. Finally, it enters the soft landing stage, during which it has to go through many stages, such as deceleration, approach, hovering, obstacle avoidance, slow descent and free descent. The whole descent process lasts about fifteen minutes without interruption.

? After landing, it is the beginning of the key. Next, Chang 'e V will perform a two-day mission to collect lunar soil and return to Earth after completing the mission. The whole process of Chang 'e V lunar exploration mission will last for about 23 days. According to the plan, Chang 'e V will eventually land in Siziwangqi, Inner Mongolia.

As for the earth-fetching mission on Chang 'e V, it is not just a handful of lunar soil to be returned. It is understood that this mission will collect about two kilograms of lunar soil, seal it and bring it back. On the surface of the moon, the depth of rocks on the surface of the moon is up to two meters, and soil data of different rock layers are obtained. This mission to the moon will enable our country to further explore the universe, lay a foundation for further understanding of the moon in the future, and will provide great help for the future development of China's space technology.

At 4: 30 on June 24, 2020, the Chang 'e V carrier rocket was launched from the Wenchang Space Launch Site in China. After about 2200 seconds, the detector was successfully put into the predetermined orbit. 2020165438+1at 22: 06 on October 24th, the 3000N engine of the Chang 'e-5 probe worked for about 2 seconds, successfully completed the first orbit correction and continued to fly to the moon. Chang 'e-5 mission has high launch accuracy and little orbit correction. Before the first orbit correction, the systems of Chang 'e-5 probe were in good condition, flying in orbit for about 17 hours and about160,000 kilometers away from the earth. 65438+At 23: 00/kloc-0: 00 on February 3rd, the 3000N engine of Chang 'e V ascender worked for about 6 minutes, and the ascender with samples was successfully sent into the scheduled orbit around the moon. This is the first time that China has taken off an extraterrestrial body.

The perfect landing of Chang 'e V on the moon is inseparable from the support of some high-end technologies, and some technical problems have also been encountered in the whole process. Chang 'e V mainly faces four technical problems: sampling, ascent, docking and high-speed reentry. At the same time, the system design of Chang 'e V faces five major challenges. What's the first one? How many parting surfaces are there? . Compared with shenzhou spaceship and? Chang 'e III? Only two parts need to be separated, that is, two separation surfaces. Chang 'e V? There are five parting surfaces, all of which must be? One-time success. In addition, Chang 'e V also faces challenges such as "complex model", "demanding details", "temperature control" and "slimming pressure". Only by overcoming these technical problems can we have a perfect moon landing. It is of great significance for Chang 'e V to carry out this mission. Congratulations on the vigorous development of China's space industry!