Universiti Teknologi Malaysia Institutional Repository

Estimation of lift and drag characteristics of UTM elang-1 UAV

Israr Ahmad, Haris Ahmad and Dahalan, Md. Nizam (2008) Estimation of lift and drag characteristics of UTM elang-1 UAV. In: 2nd Regional Conference on Vehicle Engineering & Technology, 15 - 16 July 2008, Hotel Istana, Kuala Lumpur.

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Abstract

This paper presents the aerodynamic estimation of lift and drag carried out on a three-dimensional UTM Elang-1 UAV by Computational Fluid Dynamics (CFD) simulation and the analytical calculations at sea level condition. UTM Elang-1 is an unmanned aerial vehicle, UAV developed by Universiti Teknologi Malaysia with the mission of surveillance and aeronautical study. It has a maximum take off weight of 105 kg and has a wing span of 3.57 m with the airfoil section of NACA 2415. The aerodynamic characteristics of the UTM Elang-1 such as coefficients of pressures and aerodynamics lift and drag had been measured either using a commercial CFD code, FLUENT or analytical calculations at various angles of attack. In the analytical portion, the characteristics of lift and drag as a function of angle of attack were determined by using USAF Datcom method. For CFD simulation, the model is implemented in the three dimensional unstructured multi domain code using a high resolution implicit second order upwind scheme. Simultaneously, the aerodynamic lift and drag obtained from the CFD simulation and analytical calculations had been compared. The results proved they were agreeable especially at a low angle of attack.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:aerodynamic characteristics, datcom method and CFD simulation.
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:7031
Deposited By: Dr Abd Rahim Abu Bakar
Deposited On:15 Dec 2008 08:39
Last Modified:15 Dec 2008 08:39

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