智神星二号复用火箭发动机全系统试车成功

Core Viewpoint - The successful full-system hot test of the CQ-90 engine marks a significant milestone for the company in the development of high-thrust, high-performance, pump-fed liquid rocket engines, laying a solid foundation for the maiden flight of the Zhishen-2 reusable launch vehicle [1]. Group 1: Engine Testing - The CQ-90 engine underwent a comprehensive full-system hot test at the Niutoushan engine test site, achieving successful results [1]. - The engine demonstrated stable ignition, consistent combustion, and normal shutdown during the test, validating the technical maturity and reliability of its core components and overall integration [1]. - Performance parameters of the engine met design specifications, with a combustion efficiency exceeding 96%, indicating advanced domestic standards [1]. Group 2: Engine Specifications - The Zhishen-2 rocket has a diameter of 4.5 meters and comes in two configurations: the basic model with a launch mass of approximately 757 tons and a thrust of about 910 tons, capable of carrying 20 tons to low Earth orbit (LEO); and the bundled configuration with a launch mass of around 1950 tons and a thrust of 2730 tons, capable of carrying 58 tons to LEO [1]. - The CQ-90 engine is an upgraded version based on the CQ-50 engine, featuring a pump-fed layout and six degrees of gimbal control [2]. - The engine incorporates several new technologies, including a high-performance adjustable needle valve injector, coaxial split-type dual-stage high-speed turbine pump, and high-performance gas generator, enabling multiple starts, deep throttling, and reusability [2].