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提高增升装置效率的微型后缘装置探索研究

褚胡冰1,张彬乾2,陈迎春3,李亚林   

  • 收稿日期:2011-06-09 修回日期:2011-08-08 发布日期:2011-08-22
  • 通讯作者: 褚胡冰

Investigation on Improving High Lift System Efficiency Using Mini-TED

  • Received:2011-06-09 Revised:2011-08-08 Published:2011-08-22

摘要: 以典型三段翼型为对象,采用数值模拟方法,研究了在襟翼上增加微型后缘装置提高增升装置效率的可行性;给出了微型后缘装置的作用原理,获得了微型后缘装置位置、长度、偏度等几何参数对增升和升阻性能的影响规律。研究表明:微型后缘装置明显改变了襟翼后缘弯度,对襟翼流动产生有利诱导作用,拓展加长了增升装置的有效“气动弦长”,是一种附加“气动襟翼”。其几何参数设计原则是,以长度L≤1.5%C、位于95%襟翼弦向位置前较为合适;偏度则可根据起降等飞行状态进行选择。与四段及其以上增升装置相比,微型后缘装置具有增升效果显著、结构简单、附加重量小,易于工程实现等优点,是一种极具潜力的新型增升技术,具有深入研究价值和良好的应用前景。

关键词: 增升装置, 微型后缘装置, 几何参数, 作用原理, 设计原则

Abstract: Choosing typical three element airfoil and based on numerical simulation method, the feasibility of MINI-TED to improve aerodynamic performance of high lift system is studied. And then, the physical mechanism and parameters influence are also investigated. The study shows that: Mini-TED changes the curvature of trailing edge and increases effective aerodynamic chord length for high lift system, is an additional ‘aerodynamic flap’. Mini-TED with geometric parameters of length L≤1.5%C and fixing position before 95% length of flap is suitable, and its deflection angle can be adjusted based on different flying states. Compared with four or more element high lift system, Mini-TED is provided with remarkable lift enhancement effect, simple structure, light additional height, and more easy application in engineering. It shows attractive potential as a new lift enhancement technique.

Key words: high lift system, Mini-TED, geometric parameters, physical mechanism, design principles