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http://dx.doi.org/10.5139/JKSAS.2005.33.3.010

Buzz Suppression of Supersonic Air Inlet by Cowl Position Modification  

Shin, Phil-Kwon (충남대학교 기계공학부)
Park, Jong-Ho (충남대학교 기계공학부)
Lee, Yong-Bum (한국기계연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.3, 2005 , pp. 10-17 More about this Journal
Abstract
An experimental study was conducted at a Mach number of 2.0 to investigate the buzz suppression method on an axisymmetric, external compression supersonic inlet. The inlet model has a fixed geometry with no internal contraction. The inlet configuration was altered by changing the cowling. Results show that source of buzz has been related to the existence in the flow field of velocity discontinuity across a vortex sheet which originates from a shock intersection point. With external compression inlet, buzz can be suppressed by positioning the oblique shock slightly inside or outside of the cowl.
Keywords
Supersonic inlet; Buzz; Vortex sheet;
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