Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Unsteady Aerodynamic Analysis of an Emulated Wandering Albatross
Submission Author:
LUCAS ALVES , MG
Co-Authors:
LUCAS ALVES, Ricardo Luiz Utsch de Freitas Pinto, Oscar Ricardo Sandoval Rodriguez
Presenter: Oscar Ricardo Sandoval Rodriguez
doi://10.26678/ABCM.COBEM2023.COB2023-2071
Abstract
This paper presents an unsteady aerodynamic study of the Wandering Albatross bird (Diomedea Exulans) in order to explain how the flapping motion is able to keep flight in balance and what are some limiting factors involved. The aerodynamic modeling of the wing applies a strip theory model, in which the wing is discretized into sections through which the distributed forces are calculated. The aerodynamic model also accounts for non-stationary effects such as dynamic stall and the Knoller-Betz effect. The analysis indicates that the flight speed has biological and aerodynamic limiting factors. The biological limit is an upper limit and is caused by the increase in power required to perform the movement exceeding the power available through the musculature. The aerodynamic factor is the lower limit and is caused by the increase in stalled regions on the wing as flight speed decreases. The analysis applied in this work can be extended to other bird species.
Keywords
Unsteady Aerodynamics, flapping motion, dynamic stall, Knoller-Betz effect, wandering albatross
