China's Long March-12B Rocket Completes Successful First Flight
China on Monday, June 1, 2026, successfully launched the Long March-12B Y1 carrier rocket into space from the Dongfeng commercial space innovation pilot zone in northwest China.
The rocket blasted off at 4:40 p.m. (Beijing Time), sending a group of networking satellites for the Qianfan (Spacesail) Constellation into their preset orbits. The mission was declared a complete success.
The mission was the maiden flight of Long March-12B rocket, and marked the 647th flight mission of the Long March carrier rocket series.
D4.37m, 9 YF-102V kerosene and liquid oxygen (kerolox) engines were in the first stage and 1 YF-102V in the second stage.
The Long March 12B (Chang Zheng 12B, abbreviated CZ-12B), is a Chinese reusable medium-lift to heavy-lift launch vehicle. The rocket has two stages and its first stage is designed to be reused after stage-recovery via a propulsive landing. Both stages of the rocket use kerosene and liquid oxygen (LOX) for propulsion. The rocket is being developed by the China Aerospace Science and Technology Corporation Commercial Rocket Co., Ltd. (CACL), operating under the state-owned China Aerospace Science and Technology Corporation (CASC).
Duration: 2 minutes, 24 seconds
Release Date: June 2, 2026
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