At 0:53 on the 25th, China used the Long March 3C carrier rocket at the Xichang Satellite Launch Center to successfully launch the communication technology test satellite No.3 and the satellite entered the scheduled orbit. This is the 296th flight of the Long March series of launch vehicles.
It is reported that the launch of the communication technology test satellite No. 3 and the Changzheng No. 3 C carrier rocket are all developed and produced by China Aerospace Science and Technology Group Co., Ltd., and the launch, measurement and control tasks are under the responsibility of the China Satellite Launch Measurement and Control System Department.
The Long March III is a liquid launch vehicle developed by the China Academy of Launch Vehicle Technology. The first and second sub-classes are improved by the CZ-2C rocket. The three sub-classes use a low-temperature engine with secondary starting capability with liquid hydrogen liquid oxygen as propellant. The first and second sub-diameters are 3.35 meters in diameter, the third-level diameter is 2.25 meters, and the fairing is 2.6 meters or 3.0 meters in diameter. The CZ-3 rocket has a total length of 44.9 meters, a take-off weight of 205 tons, and a take-off thrust of 2962 kilonewtons.
The CZ-3 rocket is mainly used for high-orbit satellite launches, and the standard geosynchronous transfer orbit carrying capacity is 1.6 tons. Since January 1984, the CZ-3 rocket has been launched for the first time, flying a total of 13 times and has been retired.
The Long March 3 rocket is 52.5 meters long, the first and second sub-classes are 3.35 meters in diameter, the three sub-classes are 3.0 meters in diameter, and the take-off weight is about 242 tons. It is mainly used to launch geosynchronous transfer orbit satellites with a carrying capacity of about 2.6 tons. The Long March 3rd rocket mainly undertakes the launching tasks of Fengyun Meteorological Satellite, Beidou Navigation Satellite and China's first moonball detector “Chang'e-1”. Since its first launch on February 8, 1994, as of September 2017, the launch success rate was 100%.
The Long March 3B rocket is based on the Long March 3rd rocket. It has four 2.25 meter diameter boosters bundled on one of its sub-levels. The take-off weight is about 456 tons. It has high-orbiting and large thrust carrying capacity. The mission of launching a geosynchronous transfer orbit satellite can also be carried out with one-shot multi-satellite launch or other orbiting satellites. The Long March 3B rocket is the main rocket launched by China's Beidou navigation satellite and international commercial satellite. It mainly undertakes the launch of communication satellites such as Venus 1, Baxing 1R, Nixing 1R, W3C and the Luna 3 lunar probe. task.