摘要
当涡桨飞机因发动机安装结构中某一部件损坏 ,致使螺桨轴轴头刚度下降 ,其螺桨发生颤振涡动的极限飞行速度会下降。
A whirl flutter of a propeller rotor system has been investigated experimentally in the wind tunnel.The design of whirl flutter experimental equipment and a dynamic stiffness coefficient measurement method for the supporting system are also studied.The experiments show that if the support stiffness of the propeller rotor system is reduced as a result of failure of some elements in the engine frame or mount,the threshold flight velocity of onset whirl flutter will be decreased.The results of its wind tunnel experiments exhibit the same trends as in its theoretical calculation.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1993年第1期37-40,共4页
Journal of Aerospace Power
