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Aerodynamic characteristic study for unmanned air vehicles (UAVS) FX63-I37

M. Saad, Magedi Moh. (2013) Aerodynamic characteristic study for unmanned air vehicles (UAVS) FX63-I37. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Unmanned Air Vehicles are getting a great deal of attention from the research perspective recently. tTnm-ed Air Vehicles (UAVs) are catching more and more attention for their applications in civilian and military fields. The relatively low speed and the small aspect ratio of wings of these vehicles cause a particular flow regime that is still not well understood. Since the theories on the aerodynamics of low Reynolds number flows are yet to mature and wind tunnel experiments cost long periods and great costs, the mathematical simulation based on computational fluid dynamics (CFD) is st good methodology to adopt. Flow characteristic could be visualized on airfoil using commercial software ANSYS. Reynolds Navier-Stokes (RANS) been used to investigate the characteristics of pneumatic airfoil at different angles of attack. However, CFD typically has difficulty in predicting the location and size of the laminar separation bubble which in turn may result in poor quantitative predictions for lift, drag, and moment. Because of the problems inherent in modeling layers thicker border, where the flow may transition from laminar to turbulent flows at low Reynolds number are not well understood may lead to poor aerodynamic prediction in the results. While CFD methods have been validated for a quantity of airfoils, reliance solely on computational results is ill-advised at this point. The classic FX 63-137 was chosen for its superior low Reynolds number characteristics. It has been publicized to produce a maximum lift coefficient higher than 1.5, whereas conventional airfoils are known to degrade well below this level at low Reynolds numbers.

Item Type: Thesis (Masters)
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500-778 Aeronautics. Aeronautical engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 03 Nov 2014 08:15
Last Modified: 03 Nov 2014 08:15
URI: http://eprints.uthm.edu.my/id/eprint/5848
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