Abstract
The paper uses computational fluid dynamics combined with sliding mesh and dynamic layering methods to study the dynamic ground effect of a UVA during the phase of takeoff. The research focused on longitude characteristics, such as lift, drag and pitching moment. Results showed that the aerodynamic force would vibrate acutely, which affected the stability of the UAV and the safety of takeoff. Pitching angle is the most important factor influencing the aerodynamic forces. Increase the pitching angle properly is benefit to the safety of takeoff operation.
Publisher
Trans Tech Publications, Ltd.
Reference5 articles.
1. C. Coulliette and A. Plotkin: Airfoil Ground Effect Revisited. AIAA report, AIAA 95-1832-CP, (1995).
2. M.R. Ahmed and S.D. Sharma: An investigation on the aerodynamics of a symmetrical airfoil in ground effect. Experimental Thermal and Fluid Science, vol. 29 (2005) No. 6, pp.633-647.
3. M.R. Ahmed, T. Takasaki and Y. Kohama: Experiments on the Aerodynamics of a Cambered Airfoil in Ground Effect, 44th AIAA Aerospace Sciences Meeting and Exhibit, 9-12 January 2006, Reno, Nevada.
4. M.R. Ahmed, T. Takasaki and Y. Kohama: AIAA Journal, vol. 45(2007) No. 1, pp.37-47.
5. L.P. Zhang, X.G. Deng and H.X. Zhang: Advances in Mechanics, vol. 40 (2010) No. 4, pp.424-447.