教師資料查詢 | 類別: 期刊論文 | 教師: 王怡仁 Wang Yi-ren (瀏覽個人網頁)

標題:The lifting rotor inflow mode shapes and blade flapping vibration system eigen-analysis
學年84
學期2
出版(發表)日期1996/07/01
作品名稱The lifting rotor inflow mode shapes and blade flapping vibration system eigen-analysis
作品名稱(其他語言)
著者Wang, Yi-Ren; Peters, David A.
單位淡江大學航空太空工程學系
出版者Amsterdam: Elsevier BV
著錄名稱、卷期、頁數Computer Methods in Applied Mechanics and Engineering 134(1-2), pp.91-105
摘要The three-dimensional helicopter rotor inflow vibrating modes and rigid blade flapping motion coupled with unsteady wake system have been studied through eigen-analysis. The Peters' generalized dynamic inflow theory has been chosen as the unsteady wake model. The three-dimensional inflow velocity vibrating mode shapes for node lines have been plotted in various skew angles. The continuous motions of these mode shapes provide important information and insight into the physical phenomenon of a helicopter rotor-wake aeroelastic system. The damping of axial flight flapping modes and the flapping divergent boundary in forward flight have been compared with Su's and Lowis' rsults, respectively, to show the accuracy of our model. The results of this work give us stability information about a rotor aeroelastic system and also reveal that the induced flow has a profound effect on blade dynamics even at high advance ratios. The effect may cause an earlier unstable condition for a helicopter rotor system.
關鍵字Dynamics; Eigenvalues and eigenfunctions; Helicopter rotors; Lift; Mathematical models; Mathematical transformations; Matrix algebra; Three dimensional; Turbomachine blades; Unsteady flow; Velocity; Wakes; Axial flight flapping modes; Blade flapping vibration system; Eigenanalysis; Lifting rotor inflow mode; Peters generalized dynamic inflow theory; Unsteady wake model; Vibrations (mechanical)
語言英文
ISSN0045-7825
期刊性質國外
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產學合作
通訊作者
審稿制度
國別荷蘭
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出版型式紙本
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