航空学报 > 2016, Vol. 37 Issue (7): 2065-2090   doi: 10.7527/S1000-6893.2016.0113

层流流动主/被动控制技术

朱自强, 鞠胜军, 吴宗成   

  1. 北京航空航天大学 航空科学与工程学院, 北京 100083
  • 收稿日期:2016-03-30 修回日期:2016-04-05 出版日期:2016-07-15 发布日期:2016-04-05
  • 通讯作者: 朱自强 男,教授,博士生导师。主要研究方向:计算流体力学、飞行器气动设计。Tel:010-82314186,E-mail:zhuzq@buaa.edu.cn E-mail:zhuzq@buaa.edu.cn
  • 作者简介:鞠胜军 男,博士研究生。主要研究方向:计算流体力学、飞行器气动设计。Tel:010-82339908,E-mail:buaajsj@126.com;吴宗成 女,博士,副研究员。主要研究方向:计算流体力学、飞行器气动设计。Tel:010-82339908,E-mail:wuzc@buaa.edu.cn

Laminar flow active/passive control technology

ZHU Ziqiang, JU Shengjun, WU Zongcheng   

  1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100083, China
  • Received:2016-03-30 Revised:2016-04-05 Online:2016-07-15 Published:2016-04-05

摘要:

摩擦阻力在民机总阻力中占很大比重,减少摩擦阻力对改善民机性能和实现绿色航空具有重要意义。层流摩擦阻力远小于湍流摩擦阻力,因此扩大层流区,甚至实现全层流流动,是减阻的一个重要途径。目前形成了自然层流流动、全层流流动和混合层流流动控制(HLFC)3种层流流动主动控制技术。本文基于减阻和流动不稳定分析,对3种控制技术的概念、方法、优缺点、可带来的效益和应用层流流动控制技术的飞机的设计方法及维护(包括预防昆虫和冰粒等污染的措施)等方面作了较为系统的阐述。概要地介绍了X21A、Jetstar、Boeing 757等飞机的HLFC飞行试验验证项目,结果表明了层流流动主动控制技术的有效性和困难性。本文也从原理到飞行试验较为系统地介绍了一种层流流动被动控制技术。

关键词: 层流流动主动控制, 层流流动被动控制, 混合层流流动控制, 设计方法, 飞行试验

Abstract:

Friction drag is the major part of the total drag of a transport. Reducing the friction drag is essential for improving aircraft performance and its influence on the environment. Since laminar friction drag is much less than the turbulent one, one of the important measures for reducing the friction drag is to increase the laminar flow extent, and if possible, to realize a fully laminar flow. Three types of laminar flow active control technology, including natural laminar flow, fully laminar flow and hybrid laminar flow controls (HLFC), are formed through half centenary reseach. Based on the analysis of drag reduction and instability of flow, the concepts, methods, advantages and disadvantages, potential benefits and design methods of laminar flow control aircraft and its operational maintenance (including protection from insect contamination and ice accumulation) are described systematically in the present paper. The effectiveness and difficulties of active control are shown by briefly introducing the projects of HLFC flight tests of the X21A slotted suction flight tests, simulated airlines flight tests of Jetstar HLFC leading edge systems and Boeing 757 HLFC flight tests. A kind of passive control technology, from its mechanism to the flight demonstrator, is also systematically introduced in the present paper.

Key words: laminar flow active control, laminar flow passive control, hybrid laminar flow control, design method, flight test

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