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Aerodynamic performance enhancement of cycloidal rotor according to blade pivot point movement and preset angle adjustment
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 Title & Authors
Aerodynamic performance enhancement of cycloidal rotor according to blade pivot point movement and preset angle adjustment
Hwang, In-Seong; Kim, Seung-Jo;
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This paper describes aerodynamic performance enhancement of cycloidal rotor according to the blade pivot point movement and the blade preset angle adjustment. Cycloidal blade system which consists of several blades rotating about an axis in parallel direction and changing its pitch angle periodically, is a propulsion mechanism of a new concept vertical take off and landing aircraft, cyclocopter. Based on the designed geometry of cyclocopter, numerical analysis was carried out by a general purpose commercial CFD program, STAR-CD. According to tills analysis, the efficiency of cycloidal rotor could be improved more than 15% by the introduced methods.ĀĀȀ會ĀȀ袕ヨ⨀ニ캘Āऀ會Āऀヨ⨀ꃊ캘Āऀ會Āऀ㢖ヨ⨀〕檪؀Ā؀會Ā؀邖ヨ⨀遅뒟ऀĀḀ會ĀḀヨ⨀䃁貢ࠀĀ਀會Ā਀䂗ヨ⨀룀貢ЀĀЀ會ĀЀ颗ヨ⨀ダ貢䘀Ā會Āヨ⨀䀬冲倀Ā會Ā䢘ヨ⨀젬冲昀Ā會Āꂘヨ⨀倭冲̀Ā̀會Ā̀ヨ⨀玨Ā퀇會Ā퀇備ヨ⨀䀴펒Ā퀇會Ā퀇ꢙヨ⨀砆㾵瀀ꀏ會Āšヨ⨀㾵瀀ꀏ會Ā墚ヨ⨀蠇㾵
Cyclocopter;cycloidal blade system;blade pivot point;preset angle;
 Cited by
Yun, C.Y. "A New Vertical Take-off and Landing Aircraft with Cycloidal Blades System: Cyclocopter", Ph.D thesis, Seoul National University, Korea, 2004

Wheatley, J.B., "Simplified Aerodynamic Analysis of the Cyclogiro Rotating-wing System", NACA Technical Notes No.467, August 1933

Wheatley, J.B. and Windler, R., "Wind-tunnel Tests of a Cyclogiro Rotor", NACA Technical Notes No.528, May 1935

Kirsten, F.K., "Cycloidal Propulsion Applied to Aircraft", Transactions of the American Society of Mechanical Engineers, Vol. 50, No. AER-50-12, 1928

Kirsten, F.K., "Cycloidal propulsion in air", Engineering Experiment Station Series Bulletin No. 79, University of Washington, March 1935

Eastman, F.S., Burkheimer, G., and Cotter, W.E., "Wind Tunnel Tests on a High Pitch Cyclogiro", University of Washington Aeronautical Laboratory Report No. 191-A, University of Washington, June 1943

Eastman, F.S., "The Full-Feathering Cyclogiro", University of Washington Aeronautical Laboratory Report No. 317, University of Washington, March 1951

Gibbens, R.P. and Boschma, J.H., "Construction and testing of a new aircraft cycloidal propeller", 13th AIAA Lighter-Than-Air Systems Technology Conference, Norfolk, VA, June 28-July 1, 1999

Boschma, J.H., "Modern Aviation Applications for Cycloidal Propulsion", AIAA, Aircraft, Technology Integration, and Operations Forum, Los Angeles, CA, October 2001

Sirohi, J., Parsons, E. and Chopra, I., "Hover Performance of a Cycloidal Rotor for a Micro Air Vehicle", Journal of the American Helicopter Society, Vol. 52, No. 3, 2007

Iosilevskii, G. and Levy, Y., "Experimental and Numerical Study of Cyclogiro Aerodynamics", AIAA Journal, Vol.44, No.12, 2006

Hu, Y., Lim, K.B. and Hu, W.R., "The research on the performance of cyclogiro", 6th AIAA Aviation Technology, Integration and Operations Conference, Wichita, KS, September 2006

Higashi, Y., Tanaka, K., Emaru, T. and Wang, H.O., "Development of a Cyclogyro-based Flying Robot with Variable Attack Angle Mechanism", IEEE/RSJ International Conference on Intelligent Robots and Systems, Beijing, China, October 2006

Lee, C.H., Hwang, I.S., Min, S.Y. and Kim, S.J., "Recent development of VTOL cyclocopter", Tri-University Workshop on Mechanics & Aerospace Engineering, Beijing, China, October 2008

Theodorsen, T., "General Theory of Aerodynamic Instability and the Mechanism of Flutter", NACA Technical Notes No.496, 1935