English  |  正體中文  |  简体中文  |  Items with full text/Total items : 62378/95055 (66%)
Visitors : 2302042      Online Users : 17
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/46445

    Title: A Study of Wake Effect on Hinged Elastic Bladed Flapping Rotor
    Other Titles: 尾流效應對旋翼之鉸接彈性葉片的研究
    Authors: 王怡仁;Wang, Yi-ren;楊文中;Yang, W. C.
    Contributors: 淡江大學航空太空工程學系
    Keywords: 尾流效應;旋翼;鉸接彈性葉片;Wake dynamics;Blade-wake-interaction;Aeroelasticity;Eigen-analysis
    Date: 1999-08
    Issue Date: 2013-03-20 16:24:31 (UTC+8)
    Publisher: 臺北市:中國機械工程學會
    Abstract: This paper studies the interaction of a blade-and-wake coupled system of a helicopter rotor in both frequency and time domain. The lift response due to a unit step collective pitch control input of a four-elastic-hinged-bladed lifting rotor coupled with a three-dimensional-wake model in frequency domain has been investigated. An advanced dynamic wake theory is used as the wake model. Unsteady airfoil theory is applied to formulate the blade lift function. The Galer kin's method and modified Duncan polynomials are used as the solution procures The Eigen- analysis has also been studied to gain insight into the rotor-wake coupling system. The Floquet theory is enployed for solving the time domain eigen-problems. Results from the frequency analysis show that the higher elastic modes can be excited to make larger lift drops in resonant areas. The results from the eigen-analysis demonstrate the importance of wake layering effects. The regressing flapping mode has less damping than the other flapping modes due to its tendency to couple with the wake modes.
    Relation: 中國機械工程學刊=Journal of the Chinese Society of Mechanical Engineers 20(4),頁399-408
    Appears in Collections:[Graduate Institute & Department of Aerospace Engineering] Journal Article

    Files in This Item:

    File SizeFormat

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback