All the information about Chang 'e-1

Chang 'e-1 is scheduled to be launched around 20071October 24 18. At present, the fuel has been filled and the satellite and rocket have been docked. According to authoritative experts, compared with the legendary "Chang 'e", Chang 'e-1 weighs more than 2 tons, but its light posture is not worse than the legendary "Chang 'e" on the way to the moon. After the successful landing on the moon, people will not be able to observe with the naked eye.

◆ Overview "Chang 'e-1" satellite was developed by China Academy of Space Technology and named after Chang 'e, an ancient mythical figure in China. It is mainly used to obtain three-dimensional images of the lunar surface, analyze the distribution characteristics of related material elements on the lunar surface, detect the thickness of lunar soil, and detect the space environment of the earth and the moon. At present, this satellite has entered the initial sample development stage. At this stage, there will be two prototype satellites, electric satellite and structural satellite, to undertake satellite testing.

According to aerospace experts, the test of electric satellites is mainly used for the comprehensive test of some equipment with electronic performance, and the test of structural satellites is mainly to assess the rationality of structural design and the rationality of temperature control design of the whole satellite. At present, the structural manufacturing of these two prototypes has been completed, and the whole satellite test will be started before the end of the year. On this basis, the prototype satellite of Chang 'e-1 will be developed. According to reports, the entire initial sample test phase will last until June next year, and then it will enter the development stage of satellite positive sample stars.

In addition, the Long March 3A rocket, which undertakes the satellite launch mission, has been put into production. In order to ensure the completion of the lunar exploration project, researchers designed 4 1 item reliability for the Changsanjia rocket to improve its carrying reliability.

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Chang 'e 1 will be launched at 6 pm on 101October 24th. Astronomical space research experts also confirmed this statement.

According to experts, it is quite complicated to determine the optimal launch time of a satellite. It is necessary to make a detailed analysis of local factors such as lightning, precipitation and cloud cover, and make a judgment based on relevant historical data. After repeated consultations with aerospace, satellite launch, meteorology, astronomy and other departments, the best launch window was finally determined to be 654381around 6: 05 pm on October 24.

At present, the preparations in xichang satellite launch center are tense and orderly. The Long March 3A rocket used to launch "Chang 'e 1" has been hoisted into the rotating platform of Tower 3, and "Chang 'e 1" has also entered the launch area. Tower 3 stands quietly, and the blue rotating platform is closed, showing a test state. Xichang satellite launch center's scientific and technical personnel who test and launch, TT&C and other five systems are racing against time to make accurate measurements, making final preparations to ensure the smooth launch of Chang 'e 1 satellite. At present, all preparations are progressing smoothly.

It is understood that in order to ensure the smooth launch of "Chang 'e 1", xichang satellite launch center has carried out dozens of technical transformations on the No.2 and No.3 launch towers. At present, the two towers in the center are capable of launching "Chang 'e 1". Some experts have commented that the upgraded Chang 'e III launch tower has become one of the most advanced launch towers in the world. In a few days, "Chang 'e 1" will take off from the 85-meter-high No.3 launch tower and head for the moon 380,000 kilometers away. At that time, the world will pay attention to China again.

If Chang 'e-1 is abnormal, it can be destroyed by laser.

Some parts in the rocket have two or three parts, and one or two parts are allowed to be broken, which will not affect the normal work of the whole rocket. Other devices are "two-point and two-wire redundancy" and so on.

In addition, xichang satellite launch center's technicians also "lightened" the rocket (professionally called "derated design"), and adopted a double-track design, leaving a margin to ensure the safety of the line. Generally, it can reduce the equipment burden by half.

It is reported that xichang satellite launch center has made some system-level redundancy since 2003, mainly the redundancy of control system.

The reporter learned that when the rocket flies, there is a measuring system to measure its position and speed. Its computer equipment uses three CPUs. According to reports, the rocket includes a control system (similar to steering equipment), a structural system (bearing), a power system and a measuring system.

Rockets that run abnormally beyond the safe range will be shattered.

At present, the launch safety of "Chang 'e I" has been foolproof. In terms of personnel evacuation, the local government is responsible (this newspaper has reported in detail). Other security aspects are the responsibility of troops and scientists.

Not only that, "the base is technically prepared for the worst, and it is very advanced and mature." Yesterday, the relevant person who attended the "launch safety" meeting in Manshuiwan told reporters: "The launch base has done its best to provide technical support for two possible failures in rocket launch."

On one occasion, the Long March 3A rocket suddenly stopped for some unpredictable reason when it ignited and took off. Once this symptom occurs, the emergency plan of the whole system will be quickly started to eliminate all possible dangers. It is said that this technology is in an absolute leading position in the world, and it can completely prevent problems before they happen.

On the other hand, when the rocket is normally ignited and lifted off, in a very short time, it suddenly appears abnormal orbital operation, which is beyond the safety range. At this critical juncture, the laser and other instruments that escort the rocket to the sky quickly play a role, aiming at the core target and crushing it, and its fragments will surely fall into the evacuation safety zone without causing any casualties to people and animals.

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