关键词: 吸气式发动机;高超声速技术;冲压发动机;流体力学;一体化设计;研究进展

Abstract: A status summary of our main progresses in the field of air-breathing hypersonic technology is present in this paper,including ground testing facility,scramjet,CFD methods and airframe/propulsion integrated vehicle.During past several years,three types of ground testing facility have been build and renovated in CARDC,which are pulse combustion facility,long duration combustion facility and arc-heated directly connected facility.Experiments of different size scramjet model have been carried out in our directly connected facilities and free-jet facilities.Performance,effects of fuel/air ratio,fuel injection and so on can be determined.Comparison of result between pulse facility and long duration facility indicates that the type of pulse facility with run duration more than 100ms is an efficient way to test engine performance without cooling system.In the past ten years,a massively parallel CFD code named AHL3D is developed and widely used in many scramjet applications.Based on our several years’ effort for technology readiness of hypersonic propulsion,a small scale airframe/propulsion integrated vehicle with 1.5m length was tested in our 0.6m facility,engine performance and vehicle drag/thrust characteristics under engine powered and un-powered conditions was evaluated.

Key words: Air-breathing engine;Hypersonic technique;Ramjet engine;Fluid mechanics;Integrated design;Review