【作者】 王荇卫； 诸德超； 孙东红；

【Author】 WANG Xing-wei, ZHU De-chao, SUN Dong-hong(Beijing University of Aeronautics and Astronautics, Beijing, 100083;Chinese Helicopter Research and Development Institute, Jingdezhen,333001)

【机构】 北京航空航天大学； 中国直升机设计研究所；

【摘要】 以直X型机为平台,就桅杆式瞄准具对直升机振动的影响进行了分析与试验研究。建立了瞄准具/旋翼/主减/隔振系统/机身简化分析模型,通过与原型机隔振效率的对比,确定了桅杆系统的主要设计参数。为了定量确定对机体振动水平的影响,加工了一套瞄准具假件及其支撑结构,并依次开展了固有特性试验、地面开车试验、飞行振动水平测试。试验表明,加装40kg、60kg的桅杆式瞄准具,直升机振动满足使用要求,桅杆上的振动环境满足瞄准具装机要求。更多还原

【Abstract】 Based on Z-X helicopter, the influence of mast mounted sight (MMS) on helicopter vibration was investigated by analyses and experiments. A simplified analyzing model of Sight/Rotor/Gear Box/Vibration Isolation System/Fuselage is set up in this paper, and the primary design parameters of the mast system are determined after the comparison with the vibration isolation efficiency of the prototype. In order to determine the influence on the vibration level of the fuselage, a set of dummy sight and its support structure were manufactured, and were put into tests of inherent characteristics, ground operation, and of flight vibration level. The tests indicate that, after the installation of the 40kg or 60kg MMS, the helicopter vibration meets the requirements of usage, and the vibration environment on the mast meets the installing requirements of the sight.更多还原