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Study of hybrid air vehicles stability using computational fluid dynamics

By M. Carrión, M. Biava, G.N. Barakos and D. Stewart

Abstract

This paper uses Computational Fluid Dynamics to predict aerodynamic damping of airships or\ud hybrid air vehicles. This class of aircraft is characterised by large lifting bodies combining buoyancy\ud and circulatory lift. Damping is investigated via forced oscillations of the vehicle in pitch and yaw. The\ud employed method is verified using data for lighter than air vehicles. The use of fins and stabilisers was\ud found to be beneficial. The rear part of the body was dominated by separated flow that containedmore\ud frequencies than the forcing frequency imposed on the body. The final design is seen to be dynamically\ud stable across a range of conditions for small pitch angles

Publisher: American Institute of Aeronautics and Astronautics
Year: 2017
OAI identifier: oai:eprints.gla.ac.uk:124468
Provided by: Enlighten

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