民机前缘缝翼后缘台阶对气动特性的影响研究  

Effects of slat trailing edge step on aerodynamic characteristics of civil aircraft

作　　者：李艳[1] 蔡锦阳[1] 张冬云[1] 郑隆乾[1] Li Yan;Cai Jinyang;Zhang Dongyun;Zheng Longqian(Shanghai Aircraft Design and Research Institute,Shanghai,201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《机械设计与制造工程》2023年第5期69-72,共4页Machine Design and Manufacturing Engineering

摘　　要：民机前缘缝翼收起后与固定翼形成的后台阶破坏了机翼的气动外形,影响飞机的气动特性。基于某超临界翼型,采用CFD数值模拟方法研究了缝翼后缘台阶对干净翼高速气动特性的影响,计算对象为光顺翼型机翼和带后台阶翼型机翼,计算来流马赫数为0.711。数值模拟结果表明:后台阶的存在导致机翼升力减小、阻力增大,但仅对后台阶附近区域的压力分布产生明显影响。After the slat of civil aircraft is folded the backstage step formed between the slat and the fixed wing destroys the aerodynamic shape of the wing and affects the aerodynamic characteristics of the aircraft.Based on a supercritical airfoil,the effect of slat trailing edge step on high-speed aerodynamic characteristics of clean wing is studied by CFD numerical simulation method.The calculated configuration is smooth airfoil and airfoil with backstage step,and the Mach number is 0.711.The numerical simulation results show that the existence of the backstage makes the lift decrease and the drag increase,and it only affects the pressure distribution near the back steps.

关 键 词：缝翼 固定翼 后台阶 计算流体动力学 气动特性 

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]