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Effects of characteristic geometric parameters on parafoil lift and drag

Effects of characteristic geometric parameters on parafoil lift and drag Purpose The purpose of this paper is to describe the effects of characteristic geometric parameters on parafoil aerodynamic performance by using computational fluid dynamics CFD technique.Designmethodologyapproach The main characteristic geometric parameters cover the planform geometry, arcanhedral angle, basic airfoil and leadingedge cut. By using the CFD technique, a large number of numerical parafoil models with different geometric parameters are developed to study the correlations between these parameters and parafoil aerodynamic performance.Findings The CFD technique is feasible and effective to study the effects of characteristic geometric parameters on parafoil aerodynamic performance in threedimensional 3D flowfield condition. The planform geometry can affect the aerodynamic performance obviously. An increase in arcanhedral angle decreases the lift of a parafoil but has little effect on liftdrag ratio. The model with smaller leadingedge radius and thinner thickness of parafoil section achieves larger liftdrag ratio. The leadingedge cut has little effect on lift but increase drag dramatically meanwhile, its effect on flowfield is confined to the nearby region of leading edge.Practical implications The presented 3D numerical simulation results of parafoil models are shown to have good agreement with the tunnel test data in general trend meanwhile, considering its relatively lowcost, the CFD method could be further used to predict coefficients in preresearch or at nonexperimental conditions.Originalityvalue The paper can form the foundation of further studies on parafoil aerodynamic performance with different geometric parameters. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Effects of characteristic geometric parameters on parafoil lift and drag

Cao, Yihua; Zhu, Xu
Aircraft Engineering and Aerospace Technology , Volume 85 (4): 13 – Jun 28, 2013
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References (16)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/AEAT-Jun-2011-0096
Publisher site
See Article on Publisher Site

Abstract

Purpose The purpose of this paper is to describe the effects of characteristic geometric parameters on parafoil aerodynamic performance by using computational fluid dynamics CFD technique.Designmethodologyapproach The main characteristic geometric parameters cover the planform geometry, arcanhedral angle, basic airfoil and leadingedge cut. By using the CFD technique, a large number of numerical parafoil models with different geometric parameters are developed to study the correlations between these parameters and parafoil aerodynamic performance.Findings The CFD technique is feasible and effective to study the effects of characteristic geometric parameters on parafoil aerodynamic performance in threedimensional 3D flowfield condition. The planform geometry can affect the aerodynamic performance obviously. An increase in arcanhedral angle decreases the lift of a parafoil but has little effect on liftdrag ratio. The model with smaller leadingedge radius and thinner thickness of parafoil section achieves larger liftdrag ratio. The leadingedge cut has little effect on lift but increase drag dramatically meanwhile, its effect on flowfield is confined to the nearby region of leading edge.Practical implications The presented 3D numerical simulation results of parafoil models are shown to have good agreement with the tunnel test data in general trend meanwhile, considering its relatively lowcost, the CFD method could be further used to predict coefficients in preresearch or at nonexperimental conditions.Originalityvalue The paper can form the foundation of further studies on parafoil aerodynamic performance with different geometric parameters.

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: Jun 28, 2013

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