...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Numerical analysis of rotor aeroacoustic characteristics during collective pitch aperiodic variation in hover
【24h】

Numerical analysis of rotor aeroacoustic characteristics during collective pitch aperiodic variation in hover

机译：Numerical analysis of rotor aeroacoustic characteristics during collective pitch aperiodic variation in hover

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

摘要

Based on the FW-H equations and the CFD method, the rotor aeroacoustic characteristics during collective pitch aperiodic variation in hover are calculated and analyzed. First, a set of analysis method for aperiodic rotor aeroacoustic characteristics is developed. The aerodynamic and aeroacoustic characteristics of the BO-105 rotor in hover, the AH-1G rotor in forward flight and the NACA rotor in a ramp increase of collective pitch are calculated, and the employed numerical analysis method is validated through comparisons with experimental data. Then, the aeroacoustic characteristics of the NACA rotor during an oscillating collective pitch are analyzed, and the sound pressure peak at different collective pitch is discussed in detail. Finally, the BO-105 rotor in hover during collective pitch aperiodic variation is calculated. In addition, parameters, such as the collective pitch change rate, are quantified, and some conclusions are obtained. The configuration of collective pitch change rate will influence the directivity of rotor noise in the collective pitch increasing process, and the loading noise will be smaller if the change rate is decreasing.

著录项

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