北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (8): 1567-1576.doi: 10.13700/j.bh.1001-5965.2016.0584

• 论文 • 上一篇    下一篇

菱形连翼布局俯仰力矩非线性特性数值分析

孙俊磊1, 王和平1, 周洲1, 汪子义2   

  1. 1. 西北工业大学航空学院, 西安 710072;
    2. 北京机电工程研究所, 北京 100074
  • 收稿日期:2016-07-07 修回日期:2016-10-14 出版日期:2017-08-20 发布日期:2016-11-14
  • 通讯作者: 王和平 E-mail:wangheping@nwpu.edu.cn
  • 作者简介:孙俊磊,男,博士研究生。主要研究方向:飞行器总体设计、气动布局设计;王和平,男,教授,博士生导师。主要研究方向:飞行器总体设计、气动布局设计。
  • 基金资助:
    民机专项(MIE-2015-F-009);陕西省科技统筹(2015KTCQ01-78)

Numerical analysis of pitching moment non-linear characteristics of diamond joined-wing configuration

SUN Junlei1, WANG Heping1, ZHOU Zhou1, WANG Ziyi2   

  1. 1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072;
    2. Beijing Electro-mechanical Engineering Institute, Beijing 100074, China
  • Received:2016-07-07 Revised:2016-10-14 Online:2017-08-20 Published:2016-11-14
  • Supported by:
    Special Foundation for Civil Aircraft (MIE-2015-F-009);Shaanxi Scientific and Technological Development Program (2015KTCQ01-78)

摘要: 采用数值模拟和理论分析相结合的方法,对高空长航时(HALE)菱形连翼布局无人机(UAV)的俯仰力矩非线性特性进行了研究。研究结果显示菱形连翼布局飞机具有2个明显的俯仰力矩非线性区域并存在上仰现象。通过采用湍动能来表示后翼受前翼尾流直接扫掠而导致的流场结构改变的强度和影响范围来解释其中一个俯仰力矩非线性区域出现的原因。通过分析前后翼流场分离的特性来解释出现另一个俯仰力矩非线性区域和力矩上仰的原因。研究了总体布局参数变化对菱形连翼布局无人机俯仰力矩特性的影响,结果显示通过调整总体布局参数可以有效地缓解俯仰力矩特性曲线非线性对飞行性能带来的影响。

关键词: 高空长航时(HALE), 菱形连翼布局, 数值模拟, 俯仰力矩特性, 总体参数

Abstract: Investigation on the pitching moment non-linear characteristics of the high-attitude long-endurance (HALE) diamond joined-wing configuration unmanned aerial vehicle (UAV) was carried out by both numerical simulation and theoretical analysis method. The results show that the aircraft have two obvious pitching moment non-linear regions and there is a pitch-up phenomenon. The turbulent kinetic energy is used to represent the strength and the influence area of flow field structure of the aft-wing changed by the frt-wing wake direct sweep, which explains one of the causes of the non-linear region of the pitch moment. The other reason for the pitching moment non-linear region and pitch-up moment is explained by analyzing the separation characteristics of the aft-wing and the frt-wing. The influence of the general layout parameters of the UAV on the pitching moment characteristics of diamond joined-wing UAV was studied. The results show that adjusting the overall layout parameters can effectively mitigate the impact of pitching moment non-linear characteristics on flight performance.

Key words: high-attitude long-endurance (HALE), diamond joined-wing configuration, numerical simulation, pitching moment characteristics, layout parameters

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发