Wing flexibility effects in clap-and-fling

Perçin, Mustafa
Van Oudheusden, Bas W.
Scarano, Fulvio


Wing Flexibility Effects in Clap-and-Fling
Perçin, Mustafa; van Oudheusden, B. W.; Remes, B.; Scarano, F. (2011-12-01)
The work explores the use of time-resolved tomographic PIV measurements to study a flapping-wing model, the related vortex generation mechanisms and the effect of wing flexibility on the clap-and-fling movement in particular. An experimental setup is designed and realized in a water tank by use of a single wing model and a mirror plate to simulate the wing interaction that is involved in clap-and-fling motion. The wing model used in the experiments has the same planform with the DelFly II wings and consists...
Wing flutter analysis with an uncoupled method
Kavukcuoğlu, Koray; Akgün, Mehmet A.; Oktay, Erdal; Department of Aerospace Engineering (2003)
In this thesis, flutter of AGARD Wing 445.6 is predicted with a new approach. The unsteady aerodynamic loads are calculated with an unstructured Euler solver. Surface interpolation is used to transfer the calculated mode shapes from the structural mesh to the CFD mesh and to transfer pressure distributions in the opposite direction. Using the transferred pressure distributions, nodal force distributions on the finite element model are calculated. A polynomial is fitted to the nodal forces in terms of the re...
Wing in ground effect vehicle: modelling and control
Ghafoor, Abdul; Leblebicioğlu, Mehmet Kemal; Department of Electrical and Electronics Engineering (2015)
The “Ground Effect” is the increase in the force which is acting on a lifting surface like wing, when it come to the close proximity of the ground. Ground effect vehicles (GEV) are the kind of amphibious vehicles that fly in close proximity of ground, making use of the aerodynamic interaction between the wings of the ground effect vehicle and ground (Sea or Earth surface) and it increases their efficiency 3-4 times more. There are many other advantages of the vehicles employing GE; they do not require a tak...
Winglets for wind turbines: an experimental study on aerodynamic performance and tip vortex behavior
Ostovan, Yaşar; Uzol, Oğuz; Department of Aerospace Engineering (2017)
This study experimentally investigated the effects of winglets on power performance and tip vortex behavior of two interacting similar model horizontal axis wind turbines. Power performance of both turbines positioned in-line was measured with and without winglets attached to the blade tips of the upstream turbine. Results showed that power coefficient of upstream turbine increased about 3% operating with winglets around rotor design TSR. Downstream turbine produced less energy while operating in the wake o...
Winglet design and analysis for low-altitude solar-powered UAV
Gölcük, Ali Ihsan; Kurtuluş, Dilek Funda (2017-01-01)
One of the most important factors affecting the aerodynamic performance of the aircraft is lift-induced drag caused by wingtip vortices. This study describes the winglet design and analysis for solar-powered unmanned air vehicle (UAV). The motivation of this study is designing elliptical winglet to explore efficient shapes using multiple winglet parameters such as cant angle, sweep angle, taper ratio, toe angle and twist angle. The aim was to investigate the performance of parameters that constitute the win...
Citation Formats
M. Perçin, B. W. Van Oudheusden, and F. Scarano, “Wing flexibility effects in clap-and-fling,” 2011, Accessed: 00, 2021. [Online]. Available: