论文部分内容阅读
在直升帆旋翼桨叶的制造过程中,不可避免地存在着各桨叶翼形的差异,安装误差以及其它因素所造成的桨叶气动特性的不一致。作用在各桨叶上大小不等的升力,旋转时就成了方向、大小交变的激振力。这力引起飞机机身的振动,严重时会引起桨叶的折断,造成机毁人亡。因此在飞机制造和使用维护中,必需对旋翼进行动态平衡。旋翼桨叶是弹性体,在升力的作用下向上翘。若升力一致,则各桨叶运动轨迹在同一个锥体
In the manufacturing process of helicopter rotor blades, there are inevitably differences in blade wing shape, installation error and other factors caused by inconsistencies in the aerodynamic characteristics of the blades. Effect on the various sizes of the blade lift, the rotation has become the direction of the size of the alternating excitation force. This force caused by the vibration of the fuselage of the aircraft, will cause severe blade breakage, resulting in machine crash. Therefore, the aircraft must be dynamically balanced in the manufacture and maintenance of the aircraft. Rotor blade is an elastic body, uplift under the action of lift. If the lift is consistent, then the trajectory of the blades in the same cone