力擎一号针栓式液氧煤油发动机完成变推力摇摆试车考核

Group 1 - The core viewpoint of the articles highlights the successful testing and development of the "Liqing No. 1" engine by China Aerospace Science and Technology Corporation, marking significant advancements in liquid oxygen and kerosene engine technology [1][2] - The "Liqing No. 1" engine has completed a total of 330 seconds of testing, with an overall testing duration exceeding 1300 seconds, which is more than five times the flight duration of a reusable rocket's first stage [1] - The engine has achieved deep thrust modulation from 100% to 50% and possesses high precision thrust adjustment capabilities at the 1% level, indicating that the company has mastered core technologies in thrust modulation [1] Group 2 - The "Liqing No. 1" engine is a 30-ton thrust engine featuring advanced bolt-type injector structures and is manufactured using stainless steel 3D printing technology, offering high combustion efficiency and stability [1] - The successful development of the "Liqing No. 1" engine lays a solid foundation for the development of the "Lihong No. 2" reusable spacecraft, indicating a breakthrough in key technologies for reusable launch vehicles [1] - The "Lihong No. 1" spacecraft has successfully completed its first suborbital flight test, validating technologies for atmospheric re-entry and precise landing control, with plans to use three "Liqing No. 1" engines for the "Lihong No. 2" spacecraft [2]