Braving the cold winter to complete the "final battle" "Long March 4" has launched more than 10 times for two consecutive years

　　China News Service, Shanghai, December 27th (Zheng Yingying, Ma Shuaisha) The Long March 4 series of launch vehicles have been very busy in the past two years. After completing the "14 battles and 14 victories" in 2021, they will complete the "11 battles and 11 victories" in 2022. Jie".

　　At 15:37 on December 27th, Beijing time, China successfully launched the Gaofen 11-04 satellite into space using the Long March 4B carrier rocket at the Taiyuan Satellite Launch Center.

　　This is the 96th launch of the Long March-4 series of launch vehicles and its 11th launch this year.

　　The reporter learned from the Eighth Academy of China Aerospace Science and Technology Corporation (abbreviation: Eighth Academy) that the Long March 4 series of launch vehicles were developed by the Eighth Academy.

In 1988, after the successful maiden flight of the Long March 4A carrier rocket, Shanghai Aerospace Science and Technology Co., Ltd. continued to develop and improve rocket technology on this basis, and developed the Long March 4B, Long March 4C and other carrier rockets.

　　The Long March 4 series of carrier rockets are mainly responsible for the launch of sun-synchronous orbit satellites and inclined circular orbit satellites, mainly including Long March 4A, Long March 4B and Long March 4C III rockets, all of which are three-stage carriers of normal temperature liquid propellants Rocket.

Among them, the active ones are "Brothers B and C".

　　Last year, the finale launch of the "Long March 4 Family" was the Long March 4C carrier rocket. On December 26, 2021, China used the Long March 4C carrier rocket at the Taiyuan Satellite Launch Center to successfully launch the Ziyuan 02E satellite Launch into space.

　　This year, the venue is still the Taiyuan Satellite Launch Center, and another "brother" - the Long March 4B carrier rocket - will appear.

　　The two year-end missions are in the severe winter, especially this year is the twelfth lunar month, which is the coldest month of the year at the Taiyuan Satellite Launch Center, with the lowest temperature being about minus 30 degrees Celsius.

Therefore, the aerospace test team fully cooperated with the launch site, and adopted a series of measures such as air supply in the cabin, pasting the insulation layer, and increasing the initial temperature of the propellant to ensure that the Long March 4B carrier rocket is not affected by the environment, and successfully completed the annual "final mission". war".

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