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Study of Hybrid Air Vehicle Stability Using Computational Fluid Dynamics

M. Carrión, M. Biava, G. N. Barakos, D. Stewart
2017 Journal of Aircraft  
This paper uses Computational Fluid Dynamics to predict aerodynamic damping of airships or hybrid air vehicles. This class of aircraft is characterised by large lifting bodies combining buoyancy and circulatory lift. Damping is investigated via forced oscillations of the vehicle in pitch and yaw. The employed method is verified using data for lighter than air vehicles. The use of fins and stabilisers was found to be beneficial. The rear part of the body was dominated by separated flow that
more » ... ated flow that contained more frequencies than the forcing frequency imposed on the body. The final design is seen to be dynamically stable across a range of conditions for small pitch angles. Nomenclaturė
doi:10.2514/1.c033987 fatcat:rdnoa7slwfgzfg6zu2msyx73ka