All the information of Chang 'e-1

Chang' e-1 is scheduled to be launched at around 18: on October 24th, 27. At present, the fuel has been refueled and the satellite has been docked with the rocket. According to authoritative experts, compared with the legendary "Chang 'e", Chang 'e-1 weighs more than 2 tons, but on the way to the moon, its light posture is no worse than the legendary "Chang 'e". After the success of flying to the moon, people will not be able to observe with the naked eye.

◆ Overview "Chang 'e-1" satellite is developed by China Academy of Space Technology, named after Chang 'e, an ancient mythological 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 star and structural star, to undertake satellite testing.

According to aerospace experts, the test of electric star is mainly used for the comprehensive test of some equipment with electronic performance, and the test of structural star is mainly to check the rationality of structural design and the rationality of temperature control design on the whole satellite. At present, the structural manufacturing of these two prototype stars has been completed, and the whole star 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 whole initial sample testing stage 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 at present. In order to ensure the completion of the lunar exploration project, researchers have carried out 41 reliability designs on the Changsanjia rocket to improve its carrying reliability.

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, "Chang 'e-1" will be launched at 6 pm on October 24th. Experts on astronomical space research also confirmed this statement.

According to experts, it is quite complicated to determine the optimal launch time of a satellite, which requires a detailed analysis of local factors such as lightning, precipitation and cloud cover, and combined with relevant historical data. After repeated consultations by aerospace, satellite launch, meteorology, astronomy and other departments, the best launch window was finally determined to be around 6: 5 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 revolving platform of Tower 3, and Chang 'e-1 has entered the launching area and stood quietly in Tower 3. The blue revolving platform is tightly closed and in a testing state. Xichang satellite launch center's scientific and technical personnel in five systems, including test launch, measurement and control, are racing against time to accurately measure the amount, and make final preparations to ensure the smooth launch of Chang 'e-1 satellite. At present, all preparations are going well.

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, both towers in the center have the ability to launch Chang 'e-1. Some experts commented that the upgraded No.3 launch tower has become one of the most advanced launch towers in the world. A few days later, "Chang 'e-1" will take off from the 85-meter-high launch tower No.3 and head for the moon 38, kilometers away. At that time, the world will pay attention to China again.

If Chang 'e-1 is abnormal, laser can be used to destroy

There are two or three parts in the rocket, and one or two parts are allowed to be broken, which will not affect the normal operation of the whole rocket. Other devices are "redundancy of two points and two lines" and so on.

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

It is reported that xichang satellite launch center has made some system-level redundancy since 23, 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 3 CPUs. According to reports, the rocket includes a control system (similar to steering equipment), a structural system (bearing), a power system and a measurement system.

The rocket that runs abnormally beyond the safety range will be smashed

At present, the launch safety of Chang 'e-1 has been achieved foolproof. In terms of personnel evacuation, the local government is responsible (this newspaper has reported in detail). Other security aspects are the responsibility of the 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 participated in the "Launch Safety" meeting in Manshuiwan revealed to reporters: "The launch base has done its best to provide technical support for two kinds of failures that may occur in the rocket launch."

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

in another case, when the rocket is normally ignited and lifted off, the orbit operation abnormality suddenly appears in a very short time, and this abnormality is beyond the safety range. At this critical juncture, the laser and other instruments that escort the rocket to the sky will quickly play a role, aim at the core target and smash it, and its debris will surely fall into the evacuation safety zone, without causing any casualties to people and animals.

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