...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Transonic buffet control by rearward Buffet Breather on supercritical airfoil and wing
【24h】

Transonic buffet control by rearward Buffet Breather on supercritical airfoil and wing

机译：超临界翼型和机翼后向后自助式播放器的跨音速自助式控制

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The transonic buffet over large aircraft wings seriously affects flight safety and ride quality, thus it has been a focus issue for researchers to control transonic buffet through active or passive means. With traditional supercritical airfoil and wing, shock foot bubble and trailing edge separation usually exist in the pre-buffet conditions. The merging of the shock foot bubble and trailing edge separation is associated with buffet onset. In order to prevent shock foot bubble from merging with the trailing edge separation, this paper presents a method to alleviate the transonic buffet by applying the Buffet Breather, which is made of a punched hole near the trailing edge at the RAE2822 airfoil and Wingl supercritical wing published by Drag Prediction Workshop-III, respectively. The buffet characteristics of the airfoil and wing with and without the Buffet Breather are analyzed with Unsteady Reynolds Averaged Navier-Stokes method. The results show that the Buffet Breather can not only eliminate the buffet phenomenon under two-dimensional condition, but also weaken the pressure oscillation on the wing. In terms of the static aerodynamic characteristics, the Buffet Breather will reduce the lift coefficient under lower angle of attack and deteriorate the lift-to-drag ratio. In the actual application, a control valve can be considered to be installed, to open and close the Buffet Breather in order to achieve the best control effect. (C) 2019 Elsevier Masson SAS. All rights reserved.
机译：大型飞机翼的跨音速自助式严重影响飞行安全和乘坐质量，这是研究人员通过主动或被动装置控制肿块自助式的焦点问题。通过传统的超临界翼型和翼，震动脚泡和后缘分离通常存在于预自禁水上。休克脚泡和后缘分离的合并与自助式发作相关。为了防止冲击脚气泡与后缘分离合并，本文通过施加自助式通气来提出一种缓解跨音量自助式的方法，该方法由RAE2822翼型和WingL超临界翼的后缘附近的冲孔孔制成通过拖动预测研讨会-III发布。通过Unsteady Reynolds平均Navier-Stokes方法，分析了翼型和翼型的自助式特性和翼型的翼型和机翼的特点。结果表明，自助式通气不仅可以在二维条件下消除自助式现象，而且还削弱了机翼上的压力振荡。就静态空气动力学特性而言，自助式呼吸器将在较低的攻角下降低升力系数，并降低提升比率。在实际应用中，可以考虑安装控制阀，打开和关闭自助式呼吸，以实现最佳的控制效果。 （c）2019年Elsevier Masson SAS。版权所有。

著录项

  • 来源
    《Aerospace science and technology》 |2019年第6期|204-219|共16页
  • 作者

    Jiang Runpei; Tian Yun; Liu Peiqing;

  • 作者单位

    Beijing Univ Aeronaut & Astronaut Sch Aeronaut Sci & Engn XueYuan Rd 37 Beijing 100191 Peoples R China;

    Natl Lab Aeronaut & Astronaut 37 XueYuan Rd Beijing 100191 Peoples R China;

    Beijing Univ Aeronaut & Astronaut Sch Aeronaut Sci & Engn XueYuan Rd 37 Beijing 100191 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号