共轴式直升机桨毂阻力特性计算研究  

Calculation and Research on Drag Characteristics of Coaxial Helicopter Hub

作　　者：龙海斌[1] 吴裕平[1] LONG Haibin;WU Yuping(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2018年第3期1-5,10,共6页Helicopter Technique

摘　　要：共轴式直升机桨毂迎风面积大,表面结构复杂,产生的气动阻力占全机废阻的50%以上。采用求解N-S方程的方法对某型共轴式直升机桨毂的阻力特性进行了计算,分别研究了飞行速度、上下桨毂方位角和计算模型尺寸的变化对桨毂阻力特性的影响。通过分析计算结果发现上下支臂的气动阻力比较大,直升机飞行速度、上下桨毂方位角和计算模型尺寸变化对桨毂阻力的影响比较小。研究结果可为直升机桨毂减阻设计、阻力特性风洞试验和数值计算等提供一定的参考。As the large windward area and complex surface structure, the aerodynamic drag of coaxial helicopter hub accounted for more than 50% of the total helicopter parasite drag. The drag characteristics of one coaxial helicopter hub was calculated by the method that solving the N - S equation. The influence of flight speed, upper and lower hub azimuth, calculation model dimension on the drag characteristics of hub were studied respectively. Through analysis the calculation results found that the aerodynamic drag of upper and lower hub sleeve was relatively large, the change of flight speed, upper and lower hub azimuth, calculation model dimension had little influence on the hub drag. The research results could provide certain reference for the drag reduction design of heli- copter hub, wind tunnel test and numerical calculation of drag characteristics.

关 键 词：共轴式直升机 桨毂 阻力特性 CFD 

分 类 号：V211.52[航空宇航科学与技术—航空宇航推进理论与工程]