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http://dx.doi.org/10.5139/JKSAS.2008.36.7.621

Wind Tunnel Wall Interference Correction Method for Helicopter Rotor Tests with Closed and open Test Sections  

Lee, Hyeon-Jung (인하대학교 항공우주공학과 대학원)
Jang, Jong-Youn (인하대학교 항공우주공학과 대학원)
Lee, Seung-Soo (인하대학교 기계공학부 항공우주공학전공)
Kim, Beom-Soo (인하대학교 기계공학부 항공우주공학전공)
Song, Keun-Woong (한국항공우주연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.7, 2008 , pp. 621-627 More about this Journal
Abstract
Aerodynamic data measured in a wind tunnel has inevitable errors due to the presence of the wind tunnel walls. These unwanted interference effects must be corrected for the wall interference free aerodynamic data. Streamline curvature effects are caused by straightening of streamlines due to wind tunnel walls. Classical Glauert's correction method that is a standard method for fixed wing aircraft is not suitable for rotary wing aircraft. In this paper, Heyson's correction method of which wake model is compatible with rotors is used to correct the rotor shaft angle as well as the dynamic pressure. The results of Heyson's method are compared with Glauert's correction method.
Keywords
Wind Tunnel; Wall Effects Correction; Rotors; Streamline Curvature;
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  • Reference
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