The main tasks of Chang 'e IV:
The white paper "China Aerospace in 20 1 1 year" indicates that China will select limited targets and carry out deep space exploration activities step by step. According to the development idea of "circling, falling and returning", we will continue to promote the construction of lunar exploration projects, launch lunar soft landing and lunar patrol detectors, realize lunar soft landing and patrol detection, complete the second step of lunar exploration, and start the third step of lunar exploration with the goal of sampling and returning to the lunar surface. ?
Chang 'e IV will realize the soft landing and patrol mission of the moon and be launched by Long March 3B.
In terms of science and technology, the second phase of the project will achieve four firsts. It is necessary to develop and launch China's first extraterrestrial celestial landing probe and patrol probe, launch the Earth-Moon transfer orbit spacecraft with the "Long March 3B" carrier rocket for the first time, establish and use the deep space measurement and control network for measurement and control communication for the first time, realize major breakthroughs such as lunar soft landing, lunar patrol and moonlit night survival for the first time, and carry out research on lunar surface topography and geological structure, mineral composition and chemical composition, and internal structure of the moon.
Three major scientific research: ① research on the back environment of the moon; ② Study the surface layer, shallow layer and deep layer on the back of the moon; The biggest feature is that the back of the moon is not affected by the sun, and low-frequency radio detectors can be installed on the back of the moon and relay stars respectively, which is an excellent place for low-frequency radio detection. This frequency band selection is also the first time in the world.
The engineering objectives of the Chang 'e-4 mission are: first, to develop and launch a lunar relay communication satellite to realize the first international TT&C and relay communication in Lagrange L2; The second is to develop and launch lunar lander and patrol to realize the first international soft landing and patrol detection on the back of the moon.
The scientific mission of Chang 'e IV is mainly to carry out low-frequency radio astronomical observation and research on the back of the moon. Carry out exploration and research on the shape, mineral composition and shallow structure of the patrol area on the back of the moon; The experimental study on the lunar environment such as neutron radiation dose and neutral atoms on the back of the moon was carried out.
Baidu Encyclopedia-Chang 'e No.4 Detector