王 群,邓洪伟,杨胜男,卢浩浩,陈瀚赜,王 旭.一体化加力燃烧室支板雷达隐身修形仿真[J].航空发动机,2022,48(6):1-6
一体化加力燃烧室支板雷达隐身修形仿真
Study on Radar Stealth Shaping for Struts of Integrated Rear Frame and Afterburner
  
DOI:
中文关键词:  雷达散射特性  雷达散射截面  一体化加力燃烧室  弹跳射线法  物理绕射理论
英文关键词:radar scattering characteristics  rader cross section  strats of integrated rear frame and ofterburner  shooting and bounc⁃ ing racy  physical theory of diffraction
基金项目:国家“XX工程”项目资助
作者单位E-mail
王 群,邓洪伟,杨胜男,卢浩浩,陈瀚赜,王 旭 中国航发沈阳发动机研究所沈阳 110015 hf606wq@163.com 
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中文摘要:
      为获得一体化加力燃烧室中支板的雷达隐身修形角度对发动机后向雷达散射截面(RCS)的影响规律,支撑一体化加力 燃烧室雷达隐身修形设计,以配装轴对称喷管的某型发动机为载体,利用弹跳射线法(SBR)和物理绕射理论(PTD)方法进行了电 磁散射特性仿真,分析了支板倾斜角度和斜切角度对发动机后向RCS的影响。结果表明:对一体化加力燃烧室支板尾端进行雷达 隐身修形设计能够显著降低发动机后向RCS均值,可使发动机后向0°~30°范围RCS均值下降40%以上;在配装轴对称喷管的情况 下,支板倾斜角的选取应重点避开88°~98°区域,斜切角的选取应重点避开0°~8°区域,当支板尾端倾斜角为68°、斜切角为16°时, 一体化加力燃烧室具有较好的雷达隐身效果。
英文摘要:
      In order to obtain the influencing law of radar stealth shaping angle of strats of integrated rear frame and afterburner to aero? engine rear aspect radar cross section(RCS),and to support the strats of integrated rear frame and afterburner radar stealth design,nu? merical simulation of the electromagnetic scattering characteristics an aeroengine equipped with an axisymmetric nozzle were conducted us? ing shooting and bouncing ray(SBR)and physical theory of diffraction(PTD)method,the influences of struts tilt angle and obliquely-cut angle on aeroengine rear aspect RCS were analyzed. The simulation results show that the radar stealth shaping for struts can reduce aeroen? gine rear aspect RCS significantly. When equipped with axisymmetric nozzle,the struts tilt angle should avoid 88° to 98°,the struts obliquely-cut angle should avoid in 0° to 8°,when the tilt angle is 68° and the obliquely-cut angle is 16°,strats of integrated rear frame and afterburner exhibits a better radar stealth effect.
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