Experimental analysis of aerodynamic performance of flapping wings nano aerial vehicles

• Autorzy: Czekałowski P. , Drewniak T. , Sibilski K. , Żyluk A.

Identyfikatory

DOI

10.5604/12314005.1133161

• Języki publikacji: EN

Abstrakty

EN

The aerodynamics of flapping wings is ultimately concerned with the relation between motion kinematics and the time-history of aerodynamic forces and moments. However, an important intermediate quantity is the evolution of the flow field – and in particular of flow separation. Nature’s solution to large time-varying pressure gradients, for example those due to aggressive motions, is to form and eventually to shed vortices. We are interested in understanding and exploiting these vortices – for example, in delaying vortex shedding to promote lift in situations where flow separation is in any case inevitable. From the engineering viewpoint, the question is to what extent closedform models and conventional numerical/analytical tools can estimate the aerodynamic force history, with an eye to eventually running large parameter studies and optimizations. Our paper contains results of water tunnel experiments on flapping wings aeromechanics. The idea of investigation is to optimize the wing trajectories, and to find methods providing stability and control. In the paper, we present, also, conception and methodology of tests. The investigation is dividing into two parts: preliminary and principal tests. The aim of initial part is to extract quasi – state characteristic for wings of different platforms shapes. This characteristic will be used to generate initial kinematics of movement of wing. It will be initial point of further tests. The purpose of the main experiment is to find the best way of movement for wing taking account all of unsteady phenomena (interaction between vortices, wing – wing interference, etc.). Finally, we want to identify efficient way of controlling nano-microelectromechanical flying insect (entomopter).

Słowa kluczowe

EN

aerodynamic performance; flapping wings micro aerial vehicles; water tunnel measurements

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2014
• Tom: Vol. 21, No. 3
• Strony: 47--57
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Czekałowski P.

• Wroclaw University of Technology Department of Mechanics and Power Engineering Wybrzeze Wyspianskiego Street, 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Drewniak T.

• Ministry of Defence – DGRSZ Zwirki & Wigury Street, 103/105, 00-912 Warsaw, Poland Tel.: [phone], fax: [phone]

autor

Sibilski K.

• Air Force Institute of Technology Ksiecia Boleslawa Street 6, 01-494 Warszawa, Poland tel.: [phone], fax: [phone]

autor

Żyluk A.

• Air Force Institute of Technology Ksiecia Boleslawa Street 6, 01-494 Warszawa, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Ol, M. V., Unsteady low Reynolds number aerodynamics for micro air vehicles (MAVs), AFRL-RB-WP-TR-2010-3013, 2010.
• [2] Ol, M. V., (Editor), Unsteady Aerodynamics for Micro Air Vehicles, RTO AC/323(AVT-149) TP/332, 2010.
• [3] Ansari, S. A., Knowles, K., Żbikowski, R., Insectlike flapping wings in the hover part 1: effect ofwing kinematics, Journal of Aircraft, Vol. 45, No. 6, 2008.
• [4] Ansari, S. A., Knowles, K., Żbikowski, R., Insectlike flapping wings in the hover part 2: effect ofwing geometry, Journal of Aircraft, Vol. 45, No. 6, 2008.
• [5] Shyy, W., Lian, Y., Tang, J., Vheru, D., Liu, H., Aerodynamics of low Reynolds number flyers, Cambridge University Press, 2007.
• [6] RHRC, Five-component balance and computer-controlled model support system for water tunnel applications - manual, El Segundo California, User’s Manual, 2009.
• [7] RHRC, Research water tunnel specification, User’s Manual, El Segundo California, 2009.
• [8] Dickinson, M., H., Gotz, K., Unsteady aerodynamic performance of model wings at low Reynolds numbers, Journal of Experimental Biology, No, 174, pp. 45-64, 1993.
• [9] Leishman, J. G., Principles of Helicopter Aerodynamics, Cambridge University Press, 2000.
• [10] Birch, J., M., Dickinson, M., H., Spanwise flow and the attachment of the leading-edge vortex on insect wings, Nature, Vol. 412, 16, 2001.
• [11] Van den Berg, C., Ellington, C. P., The three-dimensional leading-edge vortex of a hovering model hawkmoth, Phil. Trans. R. Soc. Lond, B, 1997