太陽能無人飛行載具飛行於大氣層內之最佳飛行軌跡設計

機構典藏 > College of Engineering > Graduate Institute & Department of Aerospace Engineering > Proceeding > Item 987654321/38490

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Title:	太陽能無人飛行載具飛行於大氣層內之最佳飛行軌跡設計
Authors:	馬德明;Ma, Der-Ming;蕭照焜;Shiau, Jaw-Kuen;陳英賢;Chen, Ying-Hsien
Contributors:	淡江大學航空太空工程學系
Keywords:	太陽能無人飛行載具;最佳飛行軌跡;導引律;Solar powered UAV;Optimal flight trajectory;Guidance law
Date:	2004-12
Issue Date:	2010-01-11 15:22:06 (UTC+8)
Publisher:	逢甲大學
Abstract:	本文將運用最佳化理論，探討太陽能無人飛行載具之最佳飛行軌跡。不同於以往之大多數的最佳飛行軌跡研究通常多針對燃油消耗率進行設計，本文的研究則是著重於能量消耗率對於飛行軌跡的影響，期以配合太陽能無人飛行載具研發之應用。研究顯示在最佳的爬升軌跡下，飛機的升力係數與指示空速均保持定值；在給定的發動機輸出功率之下，固定高度之最佳轉彎飛行時，載具之控制參數(滾轉角)僅與速度有關。此二者之結果有助於太陽能飛機維持最佳爬升以及最佳水平轉彎軌跡的導引應用。 The optimal trajectories of solar powered Uninhabitant Aerial Vehicle (UAV) flying in atmosphere are studied. The solar powered UAV will not expel the fuel during the flight. Therefore its mass keeps constant during the flight. The energy loss does not affect the motion of the vehicle explicitly. In the study the energy expense is the cost function. The standard procedure of finding optimal trajectory which cooperate the Pontryagin theory is applied. The study shows that during the optimal climbing, the vehicle keeps the constant lift coefficient and the indicated airspeed. And during the optimal turn at constant altitude for given power, the control variable (bank angle) is a function of velocity only. Those two results make the design of guidance law easier.
Relation:	中國航空太空學會第四十六屆年會暨會員大會、2004航太學會/民航學會聯合學術研討會、國科會航太學門專題研究計畫成果發表會、教育部航太科技教育改進計畫成果發表會論文集，8頁
Appears in Collections:	[Graduate Institute & Department of Aerospace Engineering] Proceeding

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