直升机尾桨涡环状态研究  

Research on Vortex Ring State of Helicopter Tail Rotor

作　　者：马鸿儒[1] 孙文胜[1] 徐丽[1,2] 

机构地区：[1]海军航空工程学院青岛分院,青岛266041 [2]海军飞行学院,葫芦岛125001

出　　处：《价值工程》2011年第26期36-37,共2页Value Engineering

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.

关 键 词：尾桨涡环 涡环判据 临界速度 

分 类 号：V212.4[航空宇航科学与技术—航空宇航推进理论与工程]