Exact information on Chang e 1 and information on Chang e 2

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.

The Chang'e-2 satellite is also known as the Chang'e-2 satellite, which is the sister star of the Chang'e-1 satellite and was launched by a Chang'e-3C rocket. However, the resolution of the CCD camera on the Chang'e-2 satellite will be higher, other exploration equipment will also be improved, and the data about the moon will be more detailed, and the "Chang'e-2" was launched at the Xichang Satellite Launch Center at 18:59:57 on October 1, 2010, and was a complete success.

At present, Chang'e-2 has been ignited at 18:59:57 on October 1, 2010, and successfully launched at 19:00. At 1534 seconds after the flight, the satellite and arrow separated, and the satellite entered orbit.

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-3 to achieve a soft landing on the moon, and high-precision was carried out for the Chang'e-3 landing area.

"Running to the Moon" timetable.

October 1, 2010 at 11 a.m.: Officially enter the launch procedure at 13:30: Fill the rocket with liquid hydrogen.

17 o'clock: Enter the pre-firing system.

6:20 p.m.: Pylon platform.

18:45: Personnel begin evacuating.

06:58:27: The system is powered by the internal battery.

06:58:57: Ready for ignition.

06:59:17: The commander reports the countdown.

06:59:47: Countdown to ignition.

06:59:57: Ignition.

19 o'clock: Chang'e took off.

19:25:53: The star and arrow separate.

07:57:36: Launch is announced.

The specific task of Chang'e-1 is to obtain a three-dimensional image of the lunar surface, and it needs to finely divide some basic structures of the lunar surface, as well as the geomorphological units on the surface of the musical instrument package.

The specific mission of Chang'e-1 is to ensure the completion of the lunar exploration project, and to carry out 41 checkable tasks on the Long March-3A rocket, which undertakes the satellite mission, to improve its carrying possibility, and also carried 24 scientific exploration instruments of 8 kinds on board Chang'e-1.

Its specific mission is to carry scientific exploration instruments to complete the lunar exploration project in space and collect a series of data about the moon for us.