舱门开启对直升机机身气动特性的影响研究  

Research on the Influence of Opening Doors on the Aerodynamic Characteristics of Helicopter Fuselage

作　　者：宋子帅 潘喜英 SONG Zishuai;PAN Xiying(China Helicopter Design and Research Institute,Tianjin 300300)

机构地区：[1]中国直升机设计研究所,天津300300

出　　处：《中国科技纵横》2022年第3期75-78,共4页China Science & Technology Overview

摘　　要：为了研究直升机前飞时不同舱门打开程度对机身气动性能的影响,采用基于SST k-ω(k-ω shear-stress-transport)模型的计算流体力学方法,对舱门开度1/4、1/2、3/4、全开4种情况进行数值模拟,计算得到直升机机身的阻力、滚转力矩、俯仰力矩、偏航力矩等参数,通过流场分析,研究了舱门开启程度对机身气动特性的影响。研究结果表明:舱门开启后,机身流场不对称现象明显,机身内部形成空腔流动,使机身阻力、俯仰力矩、偏航力矩增加。In order to study the influence of different door opening degrees on the aerodynamic performance of the airframe during the forward flight of the helicopter,the computational fluid dynamics method based on the SST k-ω(k-ω shear-stress-transport)model is used to determine the opening degree of the door by 1/4,1/2,3/4,and fully open 4 situations are numerically simulated.Calculate the resistance,roll moment,pitch moment,yaw moment and other parameters of the helicopter fuselage.Through flow field analysis,the influence of door opening degree on the aerodynamic characteristics of the fuselage is studied.The research results show that after the hatch is opened,the flow field of the fuselage is asymmetryobvious,and a cavity is formed inside the fuselage,which increases the resistance,pitching moment and yaw moment of the fuselage.

关 键 词：舱门 气动载荷 机身 CFD 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]