摘要
介绍了直升机尾桨涡环状态的现象,分析比较了三种涡环判据的应用特点。针对某型直升机尾桨涡环状态,计算了其侧飞临界速度和临界悬停回转角速度。描述了实际飞行中直升机进入尾桨涡环状态的现象,提出了改出尾桨涡环状态的方法。
The phenomenon of helicopter tail rotor vortex ring is introduced,and the characteristics of three criterions for vortex ring state are compared.According to the tail rotor vortex ring state of some kind of helicopter,the critical velocity in side direction flight and critical yawing rate when turning around in hovor are calculated.The appearance of helicopter getting into tail rotor vortex ring in real flight and the method of it to get out of the state are both figured out.
出处
《价值工程》
2011年第26期36-37,共2页
Value Engineering
关键词
尾桨涡环
涡环判据
临界速度
tail rotor vortex ring
vortex ring criterion
critical velocity
