环量控制尾梁参数对直升机尾梁侧向推力的影响  

Influence of Circulation Control Parameters on Lateral Thrust of Helicopter Tail Boom in Rotor Downwash

作　　者：董振兴[1] 高亚东[1] 王华明[1] 

机构地区：[1]南京航空航天大学直升机旋翼动力学重点实验室,江苏南京210016

出　　处：《直升机技术》2011年第4期12-15,24,共5页Helicopter Technique

摘　　要：用动量源法模拟了旋翼的下洗流,对壁面射流控制圆柱绕流的环量控制参数进行了研究,利用Fluent软件分析了缝隙位置、大小和数目等参数对尾梁气动特性的影响,获得了圆柱体尾梁上气动力随环量控制参数变化的关系。其中,动量系数(喷气强度)和缝隙几何参数对圆柱尾梁上气动力的影响是本文重点。研究结果表明,缝隙位置对圆柱体尾梁的气动性能影响明显;旋翼下洗流中单缝最佳缝隙位置与风洞中相差很大;采用多缝喷气可提高圆柱体尾梁的最大升力系数。For the purpose of further mastering circulation control mechanism of a tail boom,the momentum source model was used to analyze the rotor downwash.This paper studied the circulation control parameters using a wall jet control model.Influences of the spray slot location,size and number on the aerodynamic characteristic of the boom were analyzed by using Fluent,and the relationship between them was obtained.The influence of the momentum coefficient and the geometric parameters of the slots on the aerodynamic force of the beam was the main topic of this research.The result shows that the slot location has a significant influence on the aerodynamic characteristics of the tail boom,and the best location of a single slot in the rotor downwash is quite different with that in wind tunnel.It also shows that the maximum lift coefficient of the boom increases using multi-slot blowing.

关 键 词：无尾桨 尾梁 环量控制 计算流体力学 

分 类 号：V27[航空宇航科学与技术—飞行器设计]