空军工程大学学报2025，Vol.26Issue(4)：48-57,10.DOI:10.3969/j.issn.2097-1915.2025.04.006
内涵遮挡支板对球面收敛矢量喷管RCS影响研究
Research on Impact of Internal Blocking Struts on Radar Cross Section of Spherical Converging Vectoring Nozzles
摘要
Abstract
In order to make aero-engine exhaust system meet the needs of high radar stealth performance and thrust vectoring performance,taking the spherical convergent vector nozzle as the research object,the influence of the geometric parameters of the inner-flow shielding strut modification on the backward radar cross-section(RCS)of the nozzle is analyzed,and the iterative physical optics method is used to calculate the backward RCS of the spherical convergent vector nozzle under different strut inclination angles,bevel angles,and the number of struts.The calculation results show that within both the two detection planes,the inner-flow shielding struts can effectively reduce the backward RCS of the nozzle.With regard to the strut inclination angle,when the strut inclination is at an angle of 50° to the pitch detection plane,the RCS reduction is best in effect,i.e.reaching 71％.When the strut inclination is at an angle of 30° to the yaw detection plane,the best RCS reduction reaches 21％.With regard to the strut bevel angle,when the strut bevel is at an angle of 45° to the pitch detection plane,the RCS reduction is best in effect,i.e.reaching 64％.When the strut bevel is at an angle of 40° to the yaw detection plane,the best RCS reduction reaches 19％.When the number of struts is 16 in all,the best RCS reduction effect can be obtained within both the detection planes.关键词
雷达散射面积/内涵遮挡支板/支板倾斜角/支板斜切角/迭代物理光学法Key words
radar cross section/internal blocking struts/strut inclination angle/strut chamfer angle/itera-tive physical optic分类
航空航天引用本文复制引用
吴梦珂,郭霄,夏欣如,周圆心,杨青真..内涵遮挡支板对球面收敛矢量喷管RCS影响研究[J].空军工程大学学报,2025,26(4):48-57,10.基金项目
国家自然科学基金(62341125) （62341125）
河南省科技攻关项目(252102240134) （252102240134）
河南省高等学校科研项目计划(25A590003) （25A590003）
河南省高等科技创新团队支持计划(25IRTSTHN020) （25IRTSTHN020）
郑州航空工业管理学院科研团队支持计划专项资助(23ZHTD01004) （23ZHTD01004）
