China's Chang Zheng 10B rocket to test sea recovery tech in July

China's new Chang Zheng 10B rocket is slated for its maiden flight between July 10 and July 13. The launch from the Wenchang commercial space launch site will validate a proprietary "sea net recovery" technology, described as a world-first.

The Chang Zheng 10B, developed by the China Aerospace Science and Technology Corporation (CASC), is a two-stage, reusable commercial cargo rocket derived from the Chang Zheng 10A model. Its primary objectives include facilitating low-cost, high-frequency launches for low-Earth orbit satellite internet constellations, large commercial satellites, and deep space cargo.

The rocket also serves as a technology verification platform for future manned lunar missions. It will test key technologies relevant to lunar exploration, such as the reusability of the first stage, the parallel operation of seven YF-100K engines, and the use of liquid oxygen and methane as propellant for the second stage.

Instead of landing legs, the Chang Zheng 10B employs a sea-based flexible net capture system for recovery. After the first stage separates and re-enters the atmosphere, a hook at its end is designed to engage with a large capture net deployed by a specialized recovery vessel, the "Leading". This 25,000-ton vessel utilizes dynamic positioning to ensure a precise and soft recovery.