Inspiration of hypersonic vehicle with airframe/propulsion integrated design
LUO Jinling;LI Chao;XU Jin;Beijing Aerospace Technology Institute;Beijing Electro-Mechanical Engineering Institute;
Airframe/propulsion integrated design is the key technology for hypersonic vehicles.The fore-body and the afterbody of vehicles are not only aerodynamic surface,but also either the external-compression surface of engine inlet or the expansion surface of rear nozzle.Hence airframe/propulsion integrated design directly affects aerodynamic characteristics and performances of propulsion.In this paper,the main characteristics of hypersonic vehicle is introduced and crucial aerodynamics issues such as thrust matching with drag and lift-to-drag ratio,as well as maneuverability matching with stability etc.,are reviewed.Through a comprehensive analysis of airframe/propulsion integrated design techniques,based on foreign typical hypersonic vehicles and aerodynamic design methods of critical components,the fore-body/inlet integration,after-body/nozzle integration and forced boundary-layer transition device etc.,are summarized and some valuable inspirations are obtained.The conclusions could provide important references for the investigation of air-breathing hypersonic technology.
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