亚跨声速大攻角条件下细长体外形侧向喷流气动干扰研究  

Research on the Interference of Side Jet Plume to a Slenderbody in a Subsonic or Transonic Freestream Condition at Large Angle of Attack

作　　者：梁伟 张鑫 赵文龙 李欣 段旭 LIANG Wei;ZHANG Xin;ZHAO Wenlong;LI Xin;DUAN Xu(Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)

机构地区：[1]上海机电工程研究所,上海201109

出　　处：《空天防御》2022年第3期38-43,共6页Air & Space Defense

摘　　要：针对姿控喷流在亚跨声速段的气动干扰效应问题,对细长体在侧向喷流发动机工作时迎风背风面的气动干扰情况进行了计算研究。研究结果表明:迎风面喷流时气动干扰较为复杂,干扰效果变化较为剧烈,喷口下游物面上的低压区和更低压力区在减小法向力的同时产生了抬头力矩;在中小攻角下,法向力和俯仰力矩的干扰特性有相反的变化趋势;较大攻角下迎风面的侧向喷流仍然保持了一定的俯仰力矩操纵能力。迎风面喷管工作时干扰效果变化较为剧烈,背风面喷管工作时干扰效果较为平稳,跨声速条件下的喷流干扰作用比亚声速下更强烈。In this paper,the aerodynamic interference of jet plume to a slender body in subsonic and transonic flow is investigated.Simulation indicates that on the upstream side of the body,jet plume interacting with freestream will cause a more complex flow which induces low pressure area on the slender body downstream of the nozzle.At medium angle of attack or still less,tendency for the interacting effect of CN and mz on the slender body reveals differently.At large angle of attack,the jet nozzle on the upstream side of the slender body still keeps some maneuvering capability to pitching movement.The interference effect varies more violently when the upstream jet is working,while it’s more steady when the down stream jet is working.The intensity of the jet plume interference is greater while the slender body is placed in transonic flow than in subsonic flow.

关 键 词：细长体 亚跨声速 大攻角 侧喷干扰 

分 类 号：V211.24[航空宇航科学与技术—航空宇航推进理论与工程]