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http://dx.doi.org/10.5139/JKSAS.2013.41.7.516

Study on Tip Clearance Effect of a Counter-Rotating Ducted Fan for VTOL UAV  

Min, Junho (Department of Mechanical Engineering, Hanyang University)
Ryu, Minhyoung (Department of Mechanical Engineering, Hanyang University)
Lee, Seawook (Department of Mechanical Engineering, Hanyang University)
Cho, Jinsoo (School of Mechanical Engineering, Hanyang University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.41, no.7, 2013 , pp. 516-523 More about this Journal
Abstract
The tip clearance effect on counter-rotating ducted fan of VTOL UAV in hovering condition, was investigate using computational analysis. The $k-{\omega}$ SST turbulence model is employed in this study. The numerical results of baseline model are validated by wind tunnel test in hovering and forward conditions. It is observed that if tip clearance of one rotor in the counter-rotating ducted fan increase then the thrust coefficient of another rotor increases. In Addition to this, when the tip clearance of the rear rotor increases, the thrust of the ducted fan is improved due to increasing of average total pressure at exit plane.
Keywords
Counter-Rotating; Ducted Fan; Tip Clearance; Aerodynamic Characteristics; Wind Tunnel Test; Computational Fluid Dynamics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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