English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 57517/91034 (63%)
造訪人次 : 13454709      線上人數 : 314
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/65285


    題名: Asymmetrical Chattering Arc in Vertical Plane Flight
    作者: Chern, Jeng-shing;Chen, Yen-hsun;Hong, Zuu-chang
    貢獻者: 淡江大學機械與機電工程學系
    日期: 2000-04
    上傳時間: 2013-05-30 15:25:33 (UTC+8)
    出版者: Kidlington: Pergamon
    摘要: The asymmetrical chattering arc of a winged space vehicle in the vertical plane reentry flight has been studied. With the use of dimensionless variables, we need only two parameters to specify the aerodynamic characteristics of the vehicle, one is the ballistic coefficient and the other is the maximum lift-to-drag ratio. The control variable is the normalized lift coefficient (NLC), the ratio of the lift coefficient and the lift coefficient at the maximum lift-to-drag ratio. The chattering flight happens when the NLC switches rapidly between its maximum and minimum values. We use the chattering control on the NLC to obtain maximum drag, or say, maximum deceleration. The asymmetrical chattering arc will be existing when the maximum and minimum NLCs have different absolute values. We started the study of the asymmetrical chattering from an example of basic dynamical system. It is found that a singular arc can be replaced by either a symmetrical or an asymmetrical chattering arc. The net effects on the lift and drag will be the weighted sums of the first and second orders of the maximum and minimum NLCs, respectively. The weighting factor is the percentage of acting time. A typical asymmetrical chattering reentry flight has the characteristics of maximum deceleration and phugoid oscillation.
    關聯: Acta Astronautica 46(7), pp.441-448
    DOI: 10.1016/S0094-5765(99)00187-3
    顯示於類別:[機械與機電工程學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML144檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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