The story behind Shenzhou 5's successful launch.

June 65438+10/October 65438+In the early morning of May 2003, the launch of Shenzhou 5 spacecraft entered a two-hour countdown, and the first flight astronaut Yang Liwei had entered the spacecraft for standby. "Shenzhou 5, here is zero. How do you listen to my voice? " The loud voice of Commander Zero spread throughout the dispatching post, but the voice of the astronauts in the spacecraft was intermittent and there was a "squeaking" sound.

Manned first flight, the first time in the Millennium of the Chinese nation, the astronauts' every move attracted the attention of the world. A slight mistake in the process will have irreparable consequences. The boss who directed the major systems to go online couldn't sit still and asked anxiously, "What's the matter?" The launch site commander called the monitoring station and ordered it to solve the problem as soon as possible.

Before the launch of Shenzhou 5 manned spacecraft, Chen Fufeng, the careful deputy director of the optical measurement room, found that the included angle between the launch window of the spacecraft and the sun would adversely affect the tracking and imaging of two optical measurement devices.

This made him fidget and get up in the middle of the night. He accurately calculated the change of the included angle of the sun during the equipment tracking, and organized more than 50 tracking imaging experiments in one week. Afterwards, he wrote a tracking imaging analysis report in time, and formulated effective measures to reduce the impact of the sun's included angle on the mission.

In order to eliminate hidden dangers, technicians have compiled a variety of test schemes by combining "isolation method" with test means. After more than two months of step-by-step investigation, it was finally found that the Ethernet card models on the two types of microcomputer servers did not match the performance of the servers, and the related application software provided by the manufacturers had design defects.

The technicians of the measurement and control station immediately replaced the high-performance network card, modified the relevant parameters of the real-time application software, changed the original "intelligent forwarding" mode to "store and forward", and re-made the network cable connector, which completely solved the problem of data "packet loss".

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Shenzhou 5's manned space mission has realized the aspiration of the people of China to fly for thousands of years, which is a high condensation of the wisdom and spirit of the Chinese nation and a new milestone in China's space industry in the new century. The successful launch of Shenzhou 5 marks that China has become the third country to independently master manned space technology after the former Soviet Union (Russia) and the United States.

China Youth Daily-Life Story of China