基于舵面控制的外挂物分离仿真方法研究  

Research on External Store Sparation Simulation method Based on Rudder Surface Control

作　　者：靳晨晖 李典 王泽汉 陈鑫[3] Jin Chenhui;Li Dian;Wang Zehan;Chen Xin(Key Laboratory of Aerodynamic Numerical Simulation,AVIC Computing Technique Research Institute,Xi’an 710068,China;Shanghai Aircraft Design and Research Institude,Shanghai 201210,China;Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]航空工业西安航空计算技术研究所航空气动数值模拟重点实验室,陕西西安710068 [2]上海飞机设计研究院,上海201210 [3]西北工业大学,陕西西安710072

出　　处：《航空科学技术》2023年第8期18-27,共10页Aeronautical Science & Technology

摘　　要：基于舵面控制的外挂物分离仿真是一个典型的多学科耦合问题,需要对其气动性能、飞行性能和控制性能综合进行分析。本文主要围绕数值仿真中计算流体力学(CFD)和控制方程与刚体动力学(RBD)方程的耦合求解、高效嵌套网格技术、耦合飞行控制系统(FCS)的气动/运动/控制的多学科耦合仿真的三个关键技术进行研究。针对以上技术难点,发展了一套基于舵面控制的外挂物分离仿真方法。仿真结果表明,通过舵面控制,有效改善了外挂物在分离过程中的姿态变化剧烈的现象,提升了分离安全性与分离品质;发展的基于舵面控制的外挂物分离仿真方法能够处理复杂运动边界的非定常问题,检验飞行控制律,具有一定的工程价值。Control of the rudder surface is a typical multi-disciplinary coupling problem.The aerodynamic performance,flight performance and control performance need to be considered as a whole for research and analysis.This paper is centered on three key technical difficulties in numerical virtual flight:Coupling solution of Computational Fluid Dynamics(CFD)and Rigid Body Dynamics(RBD);Efficient mesh overset technology;Multi-disciplinary coupled solution of aerodynamics/motion/control of Flight Control System(FCS).Simulation results show that through the control of the rudder surface,the phenomenon that the external object has a more severe attitude change during the separation process is effectively improved,and the separation safety and separation quality are improved.The developted simulation method of external object separation based on rudder surface control can deal with the unsteady problems with complex moving boundaries,test flight control law,which has good engineering application value.

关 键 词：飞行仿真 多学科耦合 嵌套网格 舵面控制 分离品质 

分 类 号：V215.3[航空宇航科学与技术—航空宇航推进理论与工程]