What is the main mission of Chang e 2?

It is to carry out preliminary engineering verification and exploration for the second phase of the lunar exploration project, and will undertake ten missions including verification and exploration.

Chang'e-2 is China's lunar exploration program.

The second artificial satellite around the moon is also China's lunar exploration program.

The technical pilot of the second phase was originally Chang'e-1.

The backup star is named after the ancient Chinese mythological character Chang'e.

On October 1, 2010, Chang'e-2 was at the Xichang Satellite Launch Center.

launch into space; On October 6, 2010, Chang'e-2 was sent to the moon.

capture, into orbit around the moon; On August 25, 2011, Chang'e-2 entered Lagrange.

L2 point orbit; On December 15, 2012, the Chang'e-2 project was announced.

The complete success of the Chang'e-2 mission marks a breakthrough in the field of deep space exploration and has mastered a large number of new core technologies and key technologies with independent intellectual property rights, laying a solid technical foundation for the subsequent implementation of the "landing" and "return" of the second phase of the lunar exploration project and the next step of Mars and other deep space exploration, and another important step in the process of China's transformation from a space power to a space power.

Value significance: The complete success of the Chang'e-2 mission marks China's breakthrough in the field of deep space exploration and mastery of a large number of new core technologies and key technologies with independent intellectual property rights, laying a solid technical foundation for the subsequent implementation of the "landing" and "return" of the second phase of the lunar exploration project and the next step of deep space exploration such as Mars, and another important step in the process of China's transformation from a space power to a space power.

The main mission of Chang'e-2 is to obtain clearer and more detailed image data of the lunar surface and the surface of the lunar polar region, so the resolution of the CCD camera on board the satellite will be higher, and other exploration equipment will also be improved. Some key technical tests were carried out for Chang'e-2 to achieve a soft landing on the moon, and high-precision imaging of the Chang'e-2 landing area was carried out. Further exploration of the distribution of elements on the lunar surface, the thickness of lunar soil, and the space environment of the Earth and the Moon.

The three major tasks achieved by Chang'e-3 are actually "surveying the sky, observing the earth, and measuring the moon", so what are the three major tasks? What's the point, let's move on:

The first is "Moonmetry":The lunar ridge radar under the Chang'e-3 vehicle was used to detect the structure of the subsurface layer and the structure of the deep soil layerThe surface structure is at a depth of 30 meters on the moon, and the structure of the deep soil layer is at a depth of 100 meters on the moon, and this lunar survey is of great significance, because this is the first lunar mission in the world. The significance of the strategy is to be able to estimate the total amount and distribution of helium-3 with clean energy by detecting the deep soil layer and surface structure, and this energy can also be used for power generation, the principle is nuclear fusion, it is understood that if you want to meet the earth's annual human power consumption, only 100 tons of helium-3 are needed, according to Chang'e-3's lunar exploration, the reserves of helium-3 are as high as 1 million tons, and if it can be reasonably mined, then it can supply 10,000 years of electricity to the earth's personnel.

Another survey: Chang'e-3's landing device is equipped with a telescope-like deviceAny changes on the moon can be conveyed to the earth's personnel by taking pictures, and the data on the moon can be monitored, and the data of the moon can be transmitted to the earth in real time, which is equivalent to using Chang'e-3 to put an observatory on the moon, can it not be far-reaching?

One last view: Chang'e-3's landing vehicle carries an extreme ultraviolet camera, which can take pictures of the Earth's plasma layer on the moon at a distance of 380,000 kilometersThe function of taking the whole picture is to obtain a three-dimensional image of the earth's plasma layer, and this avatar is an important help to help human beings understand the connection between the earth and the sun, and can also have a more thorough understanding of the overall environment of the earth and the space environment, which is of great scientific significance.

It mainly completes three major scientific research tasks: surveying the sky, observing the earth, and measuring the moon. Moon-based near-ultraviolet telescope survey observation; Observe the structure and density changes of the Earth's plasma layer; Investigate lunar topography, geological formations and potential resources; Chang'e-3 is a key step in the three-step process of "orbiting, landing, and returning" of the lunar exploration project, and will achieve the first soft landing of China's aerospace object Zheng Instrument and the patrol and exploration of the lunar surface, which is an important milestone.

The mission of Chang'e-3 is to stand on the moon to look at the stars, observe the appearance of the earth, and transfer chemical research on the earth to the moon. The significance is that we can improve our observation of the moon, understand the earth better, make the study of the earth more refined, and study the earth's rocky geology through the moon through jujube ears, and better observe the moon.

The Chang'e-3 mission is burdened with three major scientific missions, namely, the investigation of lunar surface morphology and geological structure; Investigation of the composition of monthly surface substances and available resources; Earth plasmaspheric exploration and moon-based optical astronomical observations.

Chang'e-3 is the first moon-based near-ultraviolet survey in the world, filling part of the gap in the international GALEX satellite survey in the low silver latitude region, and the moon-based optical telescope is also the only scientific instrument still working normally on Chang'e-3.

Another highlight of the Moon-based Optical Telescope is the discovery of a series of new astronomical phenomena in variable star research. For example, the discovery of a rare celestial body in the process of rapid material exchange evolution of binary stars, the discovery of a batch of samples in the process of slow material exchange evolution of binary stars, the discovery of a semi-contiguous dense binary star in a six-star system, and the discovery of the possibility that a near-binary star is generally present in a multi-star system.

Chang'e-Lixiao-3 discovered for the first time that the boundary of the Earth's plasma layer is raised under the influence of magnetospheric substorms.

Chinese scientists used the detection data of the four scientific instruments on the "Yutu" lunar rover to reveal the history of volcanic evolution in the lunar rain sea area for the first time in the world.

The main mission of Chang'e-4 is to land on the surface of the moon, continue to scientifically explore the lunar geology and resources at a deeper and more comprehensive level, and improve the lunar archives.

The scientific mission of Chang'e-4 is mainly to carry out low-frequency radio astronomical observation and research on the far side of the moon; Carry out the exploration and research of the morphology, mineral composition and superficial structure of the lunar surface patrol area on the far side of the moon; Experimental research on the lunar environment such as neutron radiation dose and neutral atoms on the far side of the moon was carried out.

According to reports, in December 2013, after the Chang'e-3 mission successfully completed China's first soft landing and inspection of extraterrestrial objects, the Bureau of Science, Technology and Industry for National Defense organized and carried out the demonstration work of adjusting the implementation plan of the Chang'e-4 mission. Considering the international frontier, scientific value, economic and technical feasibility and other factors, the overall scheme of soft landing and roving exploration on the far side of the moon was finally determined.

According to experts, the far side of the moon is always facing away from the earth, shielding the earth's radio, lightning and aurora and other interference signals, in the unique electromagnetic environment conditions of the far side of the moon, to carry out low-frequency radio observation research, will fill the gap of 100kHz-10MHz radio astronomy observation, is expected to achieve original results in interplanetary shock, coronal mass ejection and space propagation mechanism.

Chang'e-4 is not just a demonstration of national strength, it also serves an extraordinary mission.

Go to the far side of the moon and test it out there.

The main mission of the Chang'e-2 launch is to prepare for a manned landing on the moon.

If the lunar exploration is regarded as a black box, then the main task of Chang'e-1 is to verify the deviations of the lunar spatial geography from the actual situation obtained through second-hand data and theoretical exploration before obtaining first-hand information about the moon, and these deviations are compiled into a database to provide a basic database for Chang'e-2's work.

Therefore, Chang'e-1 focuses on general surveys, such as drawing three-dimensional maps of the lunar surface. Chang'e-2 will focus on detailed investigation, especially the key areas screened out according to the data provided by Chang'e-1, and it can be roughly speculated that there will mainly be the thickness of lunar soil, the distribution of lunar water, and the detailed geographical data of the far side of the moon, and Chang'e-1 will also verify part of Chang'e-3 technology, and Chang'e-2 will also verify part of Chang'e-3 technology. According to Ouyang Ziyuan, "with"Chang'e-1"comparatively,"Chang'e-2"will fly closer to the Moon and orbit at a distance of 100 km from the Moon.

Due to the carrying of a CCD stereo camera with a spatial resolution of less than 10 meters,"Chang'e-2"Observations of the lunar surface will also be clearer. This technology will also ensure:"Chang'e-3"In the future, the landing should be in the ideal position on the surface of the moon, rather than landing on a slope or in a crater. ”

The highlight of Chang'e-2 this time is that the rocket directly transferred the lunar probe to the moon to the moon, which is a breakthrough in history

a.The rocket sends the lunar probe into low-Earth orbit, and then the probe accelerates itself into the Earth-Moon transfer orbit to reach the Moon;

b.The lunar probe will be put into a large elliptical orbit around the Earth, and the perigee of the large ellipse orbit will be accelerated into the Earth-Moon transfer orbit;

c.The rocket sends the lunar probe to the gravitational equilibrium point of the Earth and the Moon, and the probe accelerates into lunar orbit to reach the Moon;

d.The rocket sends the lunar probe directly into the Earth-Moon transfer orbit to reach the Moon;

This time, China will directly adopt the third method, and the "Chang'e-2" satellite will be directly sent by a carrier rocket into the lunar orbit with a perigee of 200 kilometers and an apogee of about 380,000 kilometers. It has the following significance:

1: This time it is not the S-band measurement and control but the X-band, the X-band radio transmission signal frequency is higher, the long-distance measurement and control communication effect is better, and it is more conducive to the control of accuracy. It shows that we have taken another step forward in the field of deep space exploration and control.

2: Didn't Chang Sanc add two boosters this time? The thrust has increased by tons, and it is clear that the increase in thrust is not only due to the fact that the load of the second is greater than that of the first one, but the need to go directly into orbit.

3: The acceleration ability of the rocket reaches the second cosmic speed that is directly sent in, and it can not only break away from the earth, travel in the universe, but also travel at the speed of the lunar orbit, which shows that our rocket tracking and control technology has been at ease. The old army 001 means that this may be verified for the air-space integrated machine.