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首页> 外文期刊>CEAS Aeronautical Journal >Progress in studying passive and active devices for fuselage noise reduction for next generation turboprop
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Progress in studying passive and active devices for fuselage noise reduction for next generation turboprop

机译：研究用于下一代涡轮螺旋桨飞机机身降噪的无源和有源设备的进展

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摘要

Over the years, the interior noise levels have been improved, and nowadays a high acoustical comfort is of major importance for the commercial success of propeller aircraft. The use and development of high vibro-acoustic performance devices and their integration on the primary structure are, therefore, among the most critical topics in the greening of the next generation air transportation. The purpose of this research was properly focused on the analysis of a dynamic control system appointed to increase the noise attenuation transmitted in the propeller aircraft fuselage. Passive and active dynamic devices have been studied and characterized in this work. Simulations and tests performed on the first stage demonstrator structure highlighted how the passive tuned vibration absorber increases the comfort controlling the structural behaviour of the fuselage at the first blade pass frequency. Further improvements of fuselage comfort can be reached using active devices. A conceptual design of a hybrid active device able to act on the first three blade pass frequencies has been outlined. The characterization of the whole active noise control system has been described and its effect on noise reduction in fuselage of propeller aircraft has been evaluated.
机译：多年来，内部噪音水平得到了改善，如今，高声舒适度对螺旋桨飞机的商业成功至关重要。因此，高声声学性能设备的使用和开发以及它们在主结构上的集成是下一代航空运输绿色化中最关键的主题之一。这项研究的目的正确地集中在动态控制系统的分析上，该系统旨在增加螺旋桨飞机机身中传递的噪声衰减。被动和主动动态装置已经在这项工作中进行了研究和表征。在第一级演示器结构上进行的仿真和测试突出了被动调谐式减振器如何在第一叶片通过频率下增加控制机身结构性能的舒适性。使用有源设备可以实现机身舒适度的进一步提高。已经概述了能够作用于前三个叶片通过频率的混合动力有源设备的概念设计。描述了整个主动噪声控制系统的特性，并评估了其对螺旋桨飞机机身降噪的影响。

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  • 来源
    《CEAS Aeronautical Journal》 |2017年第2期|303-312|共10页
  • 作者

    M. Arena; A. De Fenza; M. Di Giulio; A. Paonessa; F. Amoroso;

  • 作者单位

    Department of Industrial Engineering, Aerospace Section, University of Naples "Federico II", Via Claudio 21, 80125 Naples, Italy;

    Department of Industrial Engineering, Aerospace Section, University of Naples "Federico II", Via Claudio 21, 80125 Naples, Italy,Novotech S.r.l Advanced Aerospace Technology, P.zzale D'Annunzio 15, 80125 Naples, Italy;

    Leonardo Company, Aircraft Division, Viale dell'Aeronautica, Pomigliano d'Arco, 80038 Naples, Italy;

    Novotech S.r.l Advanced Aerospace Technology, P.zzale D'Annunzio 15, 80125 Naples, Italy;

    Department of Industrial Engineering, Aerospace Section, University of Naples "Federico II", Via Claudio 21, 80125 Naples, Italy;

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  • 正文语种 eng
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  • 关键词

    Passive and active noise control; Comfort; Turbo prop; Noise reduction;

    机译：被动和主动噪声控制;安慰;涡轮螺旋桨降噪;

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