The Rocket CZ-2C launched with an upper stage from Jiuquan Spaceport.
May 20, 2022; At 1030 UTC (18:30 Beijing) China successfully launched three low-orbit Integrated Experimental Satellite test satellites Ronghe Shiyan Weixing" (RSW) using the Long March 2C with the YZ-1S upper stage carrier rocket at the Jiuquan Satellite Launch Center. report says the satellite successfully entered the predetermined orbit, and the launch mission was a complete success.
The low-orbit communication test satellite is mainly used to carry out on-orbit communication technology test verification. (Kind of SpaceX Starlink prototype; microsat-2 a&b)
This mission is the 421st flight of the Long March series of launch vehicles and China's 16th Orbital launch activity in 2022.
LM-2C Launch Vehicle is a liquid two-stage launcher designed and manufactured by China Academy of Launch Vehicle Technology (CALT), a subsidiary of CGWIC. This is the 62nd launch of LM-2C, in this mission the YuanZheng upper stage (1S) variant was used to deliver satellites in precised orbit,
Yuanzheng has a thrust of 6.5 kN (1,500 lbf) with a specific impulse of 315.5 seconds. It uses the storable hypergolic propellants unsymmetrical dimethylhydrazine (UDMH) and dinitrogen tetroxide (N2O4), and can perform at least two burns within its rated life of 6.5 hours, sufficient to reach the transfer orbit apogee, and perform the circularization burn.