摘要
直升机下降过程中旋翼周围流场复杂,尤其是涡环等工作状态下气流变化情况难以预测。简要介绍了几种入流模型,阐述了各自特点并对直升机下降时旋翼诱导速度和入流变化进行了仿真。分析了旋翼工作状态和在各工作状态中旋翼周围气流变化和对旋翼产生的影响。
The inflow field around helicopter rotor is complex,and the stream change in vortex ring state or other work state is especially unpredictable.Several inflow modal proposed are introduced with their feature being described,and the induced velocity and inflow of rotor when helicopter descending are emulated.The work states of rotor are analyzed,as well as the stream change around rotor and their influence on the rotor.
出处
《价值工程》
2011年第32期299-300,共2页
Value Engineering
关键词
直升机旋翼
入流模型
诱导速度
涡环状态
helicopter rotor
inflow modal
induced velocity
vortex ring state
