Reference : Wind tunnel experiments on a flapping drone
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/94930
Wind tunnel experiments on a flapping drone
English
Norizham, Abdul Razak mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Dimitriadis, Grigorios mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
29-May-2011
Proceedings of the 15th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2011
Paper number IFASD-2011-154
No
No
International
International Forum on Aeroelasticity and Structural Dynamics, IFASD 2011
from 26-06-2011 to 30-06-2011
Association Aéronautique Astronautique de France (3AF)
Council of European Aerospace Sciences (CEAS)
American Institute of Aeronautics and Astronautics
Paris
France
[en] Flapping flight ; dynamic stall ; wake structure ; vortex lattice method
[en] The motivation for this paper is to obtain a better understanding of the unsteady aerodynamic phenomena involved in flapping wing flight. The work is mainly experimental but also makes use of numerical results obtained from a vortex lattice approach. The flapping of 3D wings produces vortical structures which differ from those produced in 2D flow. It is a phenomenon experienced by any 3D lifting surfaces that are undergoing time dependent motion. In avian flight, it is known that different types of kinematics produce different kinds of vortical wake structures, depending on the wing aspect ratio. Understanding the wake structures and their effects can lead to the optimisation of flapping flight through the manipulation of these unsteady flow features. The objective of this work is to investigate the kinematics of 3D wings along with the evolution of the resulting vortex and wake structures while varying the oscillation parameters. The parameters in question are reduced frequency, flapping and pitching kinematics and wing profiles.The experiments make use of an enhanced version of a dynamically scaled mechanical flapping wing, which is modelled on large migrating birds with simplified kinematics. Pure flapping and combined pitching and flapping are tested in the wind tunnel and simulated at 6.0m/s, 9.4m/s and 14.8m/s.The model is forced to oscillate at four different frequencies.
Researchers ; Professionals
http://hdl.handle.net/2268/94930
http://www.ifasd2011.com/

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