直升机抛撒地雷的稳定性和动态响应研究  

Study on the Stability and Dynamic Response of the Helicopter Scatters Mines

作　　者：丁泉 苏媛[1] DING Quan;SU Yuan(School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China)

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《飞机设计》2017年第6期75-80,共6页Aircraft Design

摘　　要：建立了直升机外挂抛撒地雷装置的飞行动力学模型,外挂装置的存在改变了直升机的气动特性,对直升机的稳定性也造成较大的影响。直升机受扰动后的响应主要取决于被扰动对象的稳定性和扰动向量,而直升机抛撒地雷产生的反作用力和力矩可作为主要的扰动力向量。在小扰动假设的基础上,建立了直升机抛撒物体的扰动运动方程,通过实例计算分别得出在对称-单发、非对称-单发,非对称-连续和不同飞行速度时,直升机速度、角速度和姿态角的动态响应,并对其进行对比分析。A helicopter mathematical model with external device is developed,and the presence of the external stores has changed the aerodynamic characteristics of the helicopter,which has a great effect on the stability of the helicopter.The response of the helicopter depends mainly on the stability of the disturbed object and the disturbance vector,while the reaction force and moment from the helicopter scatters mines can be regarded as main disturbance vector.Based on small disturbance hypothesis,this paper establishes the disturbance motion equation of the helicopter.Numerical examples to obtained by calculation the dynamic response of the helicopter velocity,angular velocity and attitude angle in the symmetry-single,asymmetric single,asymmetric-continuous and fling at the different speed,and carries on the contrast analysis.

关 键 词：直升机 抛撒地雷 外挂装置 稳定性 动态响应 

分 类 号：V212.4[航空宇航科学与技术—航空宇航推进理论与工程]