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研究生:林昉瑾
研究生(外文):Fang-Jin Lin
論文名稱:直昇機旋翼葉片於非穩態動力環境中扭角與弦長之耦合設計分析
論文名稱(外文):The Coupling Design and Analysis of Chord Length and Twist angle of Helicopter Rotor Blade in Unsteady Wake Dynamic System
指導教授:張 永 康
指導教授(外文):Yeong-Kang Chang
學位類別:碩士
校院名稱:淡江大學
系所名稱:航空太空工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:中文
論文頁數:66
中文關鍵詞:旋翼葉片尾流動力理論最佳準則法
外文關鍵詞:rotor bladewake dynamics theoryMOC
相關次數:
  • 被引用被引用:0
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  • 收藏至我的研究室書目清單書目收藏:0
本論文將研究在非穩態尾流動力環境下同時考慮弦長和扭角兩種設計參數的耦合作用,且分析其相互間之影響,並應用旋翼尾流動力,空氣動力以及最佳化的理論,以期達到旋翼葉片外形的最佳化。本論文之最終目標為尋求直昇機在飛行時之最低輸出功率並滿足最大升力要求下之葉片弦長和扭角分佈值。以上的方法將配合以 Bezier curve 為基礎的移動限制以期設計出直昇機最佳的旋翼葉片。由於設計參數倍增,弦長和扭角耦合作用之互相牽制,使得問題益加複雜,因本論文將探討如何克服此種效應。
本論文將以 BELL UH-lH 的原始矩形葉片為設計對象以期設計出一套準確度與穩定度極高的旋翼葉片最佳化的系統程式,經由數值的分析找出最佳化後的旋翼葉片,並與原始矩形葉片相比較,藉以評估其最佳化後改善的效果。希望本論文對於直昇機的旋翼葉片設計能夠有所幫助。未來也可提供各界作為設計直昇機旋翼葉片時的參考。

Optimum design of two different design variables, chord length and twist angle, through an unsteady aerodynamic system will be considered in this study. Besides, this paper also discuss the coupling effect between chord length and twist angle, and apply wake dynamics, areodynamics and optimality criterion theory to obtain the optimum configuration of rotor blades. The purpose of this study is to obtain a helicopter blades' chord length and twist angle which to minimize the power output and also maintain the lift force in a misson. Because design variable doubles and couples so that the problem becomes complicated, an improve move limit with Bezier curve technique will be implemented in optimal program to overcome these effect.
The BELL UH-1H helicopter rotor blades will be redesign by optimum design program exactly and steadily. The result of new design rotor blade will compare with the original rectangular rotor blade in numerical examples.

目 錄
誌謝 ...................... I
中文摘要 ....................II
英文摘要 ....................III
目錄 ......................V
圖目錄 .....................VII
表目錄 .....................VIII
符號說明 ....................X
第一章 緒 論 ...................1
1.1 研究目的 ...............1
1.2 文獻回顧 ...............2
1.3 研究方法 ...............4
第二章 尾流動力理論 ...............5
第三章 空氣動力分析 ...............9
3.1 升力函數之推導 ............9
3.2 葉片振動方程式............12
3.3 非穩態系統及葉片動力系統整合 ..... 12
第四章 旋翼葉片之最佳化設計 ...........15
4.1 矩形葉片之最佳化設計..........15
4.2 最佳準則法 ..............16
4.3 葉片外形之平滑處理...........18
4.4 收斂條件 ...............19
第五章 數值分析與討論 ..............20
5.1 滯空飛行狀態之最佳化分析........22
5.2 單一飛行狀態之最佳化分析........25
第六章 結論 ...................27
參考文獻 .....................29
圖 ........................32
表 ........................46

[1] Ming-Shien Hsieh, 1997, “Optimum Design and Performationce Analysis for Helicopter Rotor Blade” Graduate Institute of Mechanical Engineering, TamKang University
[2] Chien-Chun Hung, 1996, “Method of Optimality Criteria for Helicopter Rotor Blade Optimum Design” Graduate Institute of Mechanical Engineering, TamKang University
[3] Chyi-Feng Lin, 1998, “A Hybrid Method for Helicopter Rotor Blade Optimum Design” Graduate Institute of Mechanical Engineering, TamKang University
[4] Theodorsen, T., “General Theory of Aerodynamic Instability and the Mechanism of Flutter, “NACA R. 496, 1935.
[5] Greenberg, J. M., “Airfoil in Sinusoidal Motion in Pulsating Stream, “NACA TN 1326, 1947.
[6] Loewy, R. G., “A Two Dimensional Approach to the Unsteady Aerodynamics of Rotary Wings,” Journal of Aerospace Science, Vol. 24, Sept. 1957, pp. 81-98.
[7] Shupe, N. K., “A Study of the Dynamic Motion of Hingeless Rotored Helicopters, “ Ph. D. Thesis, Princeton University, 1970.
[8] Ormiston, R. A., and Peters, D. A., “Hingeless Helicopter Rotor Response with Nonuniform inflow and Elastic Blade Bending,” Journal of Aircraft, Vol. 9., No. 10, October, 1972.
[9] Ormiston, R. A., “Application of Simplified inflow Models to Rotorcraft Dynamic Analysis, “ Journal of the American Helicopter Society, Vol. 21, No.3, July, 1976, pp. 34-37.
[10] Gustafson, F. B. and Gessow, A., “Analysis of Flight-Performance Measurements on a Twited, Plywood-Covered Helicopter Rotor in Various Flight Condition, “NACA TN 1289, 1947.
[11] Tangler, J. L., "The Design and Testing of a Tip to Reduce Blade Slap," American Helicopter Society Forum, 1975.
[12] Gessow, A., and Myers, Jr., G. C., Aerodynamics of the Helicopter, College Park Press, 8th printting, 1985, pp.89-102
[13] Gessow, A., "Effect of Rotor Blade Twist and Plan-Form Taper on Helicopter Hovering Performance," NACA TN 1542,1947.
[14] Prewitt, R. H., "The Design of Rotor Blades," Journal of Aerospace Science, Vol. 9, No. 7, May 1942, pp.255-260
[15] Peters, D. A., and He, C., "Finite State Induced Flow Model for Rotors in Hover and Forward Flight," The 43rd Annual National Forum of the American Helicopter Society, St. Louis, May 18-20, 1987.
[16] He, C., "Development and Application of a Generalized Dynamic Wake Theory for Lifting Rotors," Ph. D. Thesis, School of Aerospace Engineering, Georgia Institute of Technology, July, 1989.
[17] Wang, Y. R., "The Wake Layering Effect on Helicopter Rotor Aerodynamics in Forward Flight," presented at the 35th Conference of Aeronautical and Astronautical Society of the ROC, November, 28, 1993.
[18] Su, A., "Application of a Stste Space Wake Model to Elastic Blade Flapping in Hover," Ph. D. Thesis, School of Aerospace Engineering Georgia Institute of Technology, Auguest,1989.
[19] Schmit, L. A., "Structural Design by Systematic Synthesis," 2nd Conference on Electronic Computation, ASCE, New York, 1960, pp. 105-132.
[20] Vanderplaats, G. N., "Structural Optimization -Past, Present, and Future,' AIAA Journal, Vol. 20, No. 7, 1982, pp. 992-1000.
[21] Peters, D. A., Kim, B. S. and Chen, H. S., "Calculation of Trim Settings for a Helicopter Rotor by a Optimized Controller," Journal of Guidance, Control, and Dynamics, Vol. 7 No. 1 p.85 Jan-Feb.1984.
[22] Lock, C. N. H., "The Application of Goldstein's Theory to the Practical Design of Airscrews, "Br. ARC R&M No. 1377, 1931.
[23] Johnson, W., Helicopter Theory, Princeton University Press, Pricedon, 1980, pp. 484-492.
[24] Vanderplaats, G. N., "Numerical Optimization Techniques for Engineering Design with Application, "McGraw-Hill, 1993, pp. 17-19.
[25] Bezier, P., "Mathematical and Practical Possibilities of UNISURF," In Computer Aided Geometric Design, Edited by R.E. Barnhill and R. F. Riesenfeld, New York: Academic Press, 1974.

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