Zhongke Yuhang’s 110-tonne-class LOX/kerosene (RP-1) engine Liqing-2 completed
continuous long-duration qualification firings, validating operational
reliability and is designated as the main engine for the reusable rocket
Lijian-2. The test extended ignition time to 3.5x the rocket’s actual flight
duration, logging 620 seconds of cumulative firing and a single continuous burn
of 400 seconds—a record for this engine type—using extreme-duration conditions
to assess durability.
