基于虚拟飞行的混合翼身融合布局操稳特性  

Stability characteristics of hybrid wing-body aircraft based on virtual flight

作　　者：王延灵 冯帅 卜忱 沈彦杰 陈昊 芦士光 WANG Yanling;FENG Shuai;BU Chen;SHEN Yanjie;CHEN Hao;LU Shiguang(AVIC Aerodynamics Research Institute,Harbin 150001,China;Key Laboratory of Aviation Technology for Aerodynamics for Low Speed and High Reynolds Number,Harbin 150001,China)

机构地区：[1]航空工业空气动力研究所,哈尔滨150001 [2]低速高雷诺数气动力航空科技重点实验室,哈尔滨150001

出　　处：《北京航空航天大学学报》2023年第9期2337-2344,共8页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：针对混合翼身融合布局面临的三轴运动耦合和大迎角失稳等潜在操稳问题,研制三自由度虚拟飞行试验系统,基于动力学相似模型开展纵向和横航向开环虚拟飞行试验,对飞机的本体操稳特性进行研究。结果表明:该混合翼身融合布局飞机纵向和航向开环操纵均存在三轴运动耦合现象。纵向操纵会引起大迎角极限环失稳现象,迎角振荡平衡位置约为28°、振荡幅值约为2.56°、振荡主频率为0.55 Hz,振荡过程中气动力呈现非定常特性;V型尾翼偏航操纵响应呈现横向运动幅值最大、偏航运动次之、俯仰运动最小的特点。A three-degree-of-freedom wind tunnel virtual flight test system was created in an effort to address the possible stability issues of three-axis kinematic coupling and high angle-of-attack instability presented by the hybrid wing-body aircraft.Based on the dynamic similarity model,longitudinal and transverse open-loop virtual flight tests were carried out to study the stability characteristics of the aircraft.The research results show that there is a three-axis motion coupling phenomenon in both the longitudinal and directional open-loop manipulation of the hybrid wing-body aircraft.Longitudinal manipulation will cause the instability of the limit cycle at high angles of attack.The equilibrium position of oscillation is about 28°,the oscillation amplitude is about 2.56°,and the main oscillation frequency is 0.55 Hz.The aerodynamic force presents unsteady characteristics during the oscillation process;The lateral motion amplitude of the yaw manipulation is the largest,followed by yaw motion and pitch motion.

关 键 词：虚拟飞行 混合翼身融合布局 操稳特性 俯仰极限环振荡 运动耦合 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计] TB553[理学—物理]