教師資料查詢 | 類別: 會議論文 | 教師: 洪祖昌 Hong Zuu-chang (瀏覽個人網頁)

標題:Appoximate Chattering Arc for Practical Maneuvers
學年80
學期1
發表日期1992/01/01
作品名稱Appoximate Chattering Arc for Practical Maneuvers
作品名稱(其他語言)
著者Chern, J. S.; Hong, Z. C.
作品所屬單位淡江大學機械與機電工程學系
出版者
會議名稱18th ICAS Congress
會議地點Beijing, China
摘要The purpose of this paper is to develop an approximate chattering arc
for a minimum-time aerobraking maneuver for a shuttle-type space
vehicle. Theoretically, in chattering arc of the first kind, the control
chatters between its maximum and minimum values are at an infinite rate.
As an example, for a flight at a constant altitude, the bank angle
switches between its positive and negative maximum value arc at an
infinite rate to generate maximum drag. The resulting flight path is
along the arc of a great circle and is one-dimensional. We have a
complete analytic solution for this theoretical chattering arc. In
practical application, switching of the bank control at an infinite rate
is not possible. An approximate chattering arc with the bank control
switches only two times is then introduced. The resulting flight path is
two-dimensional and there is a penalty of shorter longitudinal range. We
now allow the vehicle to coast for a short distance and then change to
approximate chattering arc. The the longitudinal range is satisfied and
longer flight time (1.11% more) becomes the penalty. Further
investigation is devoted to the approximate chattering arcs with 3, 4,
and 5 times of bank control switchings, respectively. The penalty of
longer flight time is minimized by increasing the number of control switchings and selecting the optimal time instants for the switchings.
關鍵字
語言英文
收錄於
會議性質國際
校內研討會地點
研討會時間19920101~19920101
通訊作者
國別中國
公開徵稿Y
出版型式紙本
出處18th ICAS Congress,
相關連結
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