航空发动机喷管隐身修形设计技术分析

介绍了国外航空发动机喷管隐身修形设计技术在轰炸机、战斗机及无人机上的应用,阐述了喷管隐身修形设计技术的基本原理及其在实现发动机红外隐身及雷达隐身方面的重要性。分析了喷管锯齿修形设计技术对飞机/发动机的气动特性、红外及雷达隐身的影响,着重分析了锯齿结构对高温气流核心区长度的影响,获得了飞机类型、作战目的、喷管类型等因素与喷管锯齿修形设计技术选取的关系,及2元喷管锯齿形结构与轴对称喷管锯齿形结构的设计原则。

Analysis of Stealthy Shape Design Technology for Aeroengine Exhaust Nozzle

The foreign application of aeroengine nozzle stealth design modification technology on the bombers, fighters, and the the unmanned aerial vehicle (UAV) were introduced. The basic principle of stealth technology modification design and its implementation engine infrared stealth and the importance of radar stealth were expounded. The influence of the serrated nozzle modification design technology to the aerodynamic characteristics, infrared and radar stealth of aircraft/engine were analyzed, emphatically the sawtooth structure on the influence of high temperature air core length were analyzed. The relationship of aircraft type and operation models, nozzle types to sawooth modification design technology selection were obtained. Dual serrated nozzle structure and the structure of the axisymmetric nozzle zigzag design principles were obtained