摘要
直升机的"舰面共振"是一种类似于直升机地面共振的旋翼与机体耦合的动不稳定现象,与地面共振的不同之处在于"舰面共振"时直升机是在舰船上工作。文章建立了某共轴旋翼直升机的旋翼/机体/舰面耦合系统动力学分析模型,计入桨叶刚体挥舞和摆振自由度,机体模型考虑了其纵向、横向平动和俯仰、滚转运动四个自由度。
The "ship surface resonance" of helicopter is a kind of dynamic instability phenomenon similar to helicopter ground resonance, which is similar to the coupling between rotor and airbody. the difference from ground resonance is that the helicopter works on the ship when it is "ship surface resonance". In this paper, the dynamic analysis model of rotor/airframe/ship surface coupling system of a coaxial rotor helicopter is established, which takes into account the degree of freedom of blade rigid body swing and swing. The four degrees of freedom of longitudinal and transverse translational, pitching and rolling motion are taken into account in the airframe model.
出处
《科技创新与应用》
2019年第13期27-28,31,共3页
Technology Innovation and Application
关键词
直升机
共轴双旋翼
舰面共振
helicopter
coaxial double rotor
ship surface resonance
