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首页> 外文期刊>Aerospace science and technology >Frequency-domain analyses on the aeroelastic characteristics of thrust-vectored system on airship
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Frequency-domain analyses on the aeroelastic characteristics of thrust-vectored system on airship

机译：飞艇推力矢量系统气弹性特性的频域分析

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摘要

This paper investigates the aeroelastic performance of a thrust-vectored system on aerostat vehicle, which is characterized by capsule-beam-rotor or capsule-wing-rotor configuration. The distinct inherent and environmental factors, like rotor tilt, wing sweep, air condition etc., are taken into account. The variation principle is utilized to establish the governing equations, where the aerodynamic loads of wing and rotor which highly couple with the structural deformations are modeled with accordant accuracies. The physical model is applied, which is especially appropriate for the aeroelastic analyses of tilt-rotor systems in low-speed flight condition. The Rayleigh-Ritz method is employed to derive the frequency domain modal solutions. The case studies consider three contrastive models to investigate the aeroelastic mechanisms by means of parametric analyses. The results show that, except for the installation geometries of rotor, all the distinct parameters cause implications on the amplitudes and trends of modal frequencies and damping rates; the rotor rotation interacts with the structural deformations severely, leading to the occurrence of complicated coupling phenomenon; in addition, the relevant parameters also show optimizable potentials to postpone the aeroelastic instabilities. (c) 2021 Elsevier Masson SAS. All rights reserved.
机译：本文调查了浮桥车辆上推力矢量系统的空气弹性性能，其特征在于胶囊束 - 转子或胶囊 - 翼转子配置。考虑到转子倾斜，翼扫，空调等的不同固有和环境因素。改变原理用于建立控制方程，其中翼形和转子的空气动力载荷与结构变形具有高度耦合的翼形和转子以致法的精度建模。应用物理模型，其特别适用于低速飞行条件下倾斜转子系统的空气弹性分析。使用Rayleigh -Ritz方法来得出频域模态解决方案。案例研究考虑通过参数分析来研究三种对比模型来研究空气弹性机制。结果表明，除了转子安装几何形状外，所有不同的参数都会对模态频率和阻尼速率的振幅和趋势产生影响;转子旋转严重地与结构变形相互作用，导致复杂耦合现象的发生;此外，相关参数还显示出可优化的潜力，以推迟空气弹性稳定性。 （c）2021 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2021年第9期|106853.1-106853.22|共22页
  • 作者

    Zhang Xiayang; Zhao Qijun; Ma Li; Zhang Kai;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut Coll Aerosp Engn Natl Key Lab Sci & Technol Rotorcraft Aeromech Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Coll Aerosp Engn Natl Key Lab Sci & Technol Rotorcraft Aeromech Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Coll Aerosp Engn Natl Key Lab Sci & Technol Rotorcraft Aeromech Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Coll Aerosp Engn Natl Key Lab Sci & Technol Rotorcraft Aeromech Nanjing 210016 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

    Lighter-than-air system; Tilt-rotor; Aeroelasticity; Stability;

    机译：较轻的空气系统;倾斜转子;空气弹性;稳定性;

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