纵列式直升机双旋翼流场及性能试验  

Experimental Investigations on Flow Field and Performance of Tandem Rotors

作　　者：黄水林[1] 林永峰[1] 黄建萍[1] 招启军[2] 李明[1] 

机构地区：[1]中国直升机设计研究所旋翼动力学重点实验室,景德镇333001 [2]南京航空航天大学直升机旋翼动力学重点实验室,南京210016

出　　处：《南京航空航天大学学报》2011年第3期363-368,共6页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：通过加装一台套单旋翼试验台,与原有的单旋翼试验台组成了双旋翼试验台。基于测力天平和P IV技术,通过改变前后两旋翼的水平和轴向间距,测量了纵列式双旋翼不同气动布局干扰状态下的流场特性和旋翼性能,并与单旋翼情况进行了比较。分别给出了悬停和前飞状态下的旋翼速度场和涡量场分布,对比了不同纵向和轴向间距对双旋翼性能的影响。结果表明:悬停时,后旋翼性能和单旋翼基本一致;前飞时,后旋翼性能比单旋翼差,且随前进比的增加,后旋翼性能与单旋翼性能的差距会更大。A twin-rotor test rig is assembled by equipping another test rig.Using the balance and PIV technique,experimental investigations on the flow field and performance of tandem model rotors are conducted by altering the longitudinal and axial distance between the twin rotors.Furthermore,comparisons of the flow field and performance between tandem rotor and a single rotor are carried out.The flow field and vortices of model rotor both in hovering and in forward flight are shown,and the effects of different longitudinal and axial distances between the twin model rotors on their performance are compared.As a result,the performance of rear rotor is similar with that of single rotor in hovering,while it is slightly worse than that of single rotor in forward flight.And it becomes worse and worse with the increase of the advance ratio.

关 键 词：直升机 旋翼 纵列式 流场 

分 类 号：V211.53[航空宇航科学与技术—航空宇航推进理论与工程]