关键词: 高超声速;冲压发动机;飞行器;一体化受力分析;计力体系

Abstract: In the frame of this methodology, the engine pull is figured to be the force difference when the engine (Scramjet) on (with combustion) and off (without fuel). The force or moment increments produced by these differences should be added to the vehicle aerodynamic forces or moments. The aerodynamic forces are defined with the internal flowpass ventilated and no fuel injected. It is convenient in the vehicle movement analysis using a mature methodology and test technologies established in the plane design research (for reference). Under the system the needed data can be experimentally obtained.CFD results can also be improved through mass ‘cold’ tests or corrected researches concerning some influence factors (such as test gas components). The ‘cold drag’ of the internal flowpass becomes an important factor for the vehicle configuration design. A restriction should be given for the ‘internal flowpass cold drag’ from the vehicle. And the engine will be in face of a challenge as how to work well within this restriction. 

Key words: Hypersonic; Ramjet; Vehicle; Force analysis; Force accounting system