类双锥型升力式返回器横航向不稳定性分析及改进  

Analysis and improvement of lateral instability of quasi-biconical lifting reentry spacecraft

作　　者：陈刚 孙雪 李广兴 赵丹 马建颖 何程 CHEN Gang;SUN Xue;LI Guangxing;ZHAO Dan;MA Jianying;HE Cheng(Aerospace System Engineering Shanghai,Shanghai Academy of Spaceflight Technology,Shanghai 201109,China;Unmanned Aerial Vehicles Research Institute,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]上海航天技术研究院上海宇航系统工程研究所,上海201109 [2]南京航空航天大学无人机研究院,南京210016

出　　处：《北京航空航天大学学报》2024年第9期2800-2809,共10页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：类双锥型升力式返回器的横航向稳定性对其理想再入策略的实施构成严苛的约束,且在设计阶段需要进行专门分析。针对类双锥型升力式返回器的标称再入过程,使用数值仿真方法计算该飞行器在全速域、宽迎角范围内的横航向稳定性,结合流场特征分析亚/跨/超声速速域内的横航向稳定性突变规律;重点分析涡流发生器、航向增强型面、重心偏置对横航向稳定性的影响及其作用机理,最终确定了航向舵偏转与重心偏置相结合的方案就是最佳横航向增稳方案。The lateral stability of the quasi-biconical lifting reentry spacecraft is a strict constraint on the implementation of its ideal reentry strategy,which requires specialized analysis in the design stage.In this paper,for the nominal reentry process of the quasi-biconical lifting reentry spacecraft,the lateral stability of the spacecraft in the range of full speed and wide angle of attack was calculated by using the numerical simulation method.According to the flow field characteristics,the mutation regularity of the lateral stability in the sub-/trans-/supersonic domain was analyzed.Then,the effect of the eddy current generator,lateral stability enhancement surface,and center-of-gravity offset on the lateral stability was analyzed,as well as the corresponding mechanism.The results reveal that the combination of rudder deflection and center-of-gravity offset is the optimal solution to enhance lateral stability.

关 键 词：升力式返回器 高超声速 横航向稳定性 流动机理 增稳措施 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计] V412.4.4