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http://dx.doi.org/10.5139/JKSAS.2007.35.5.426

Study on the Buzz Characteristics of Supersonic Air Intake at Mach 2.5  

Lee, Hyoung-Jin (서울대학교 대학원 기계항공공학부)
Park, Tae-Hyoung (서울대학교 대학원 기계항공공학부)
Choi, Jeong-Yeol (부산대학교 항공우주공학과)
Jeung, In-Seuck (서울대학교 기계항공공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.5, 2007 , pp. 426-437 More about this Journal
Abstract
off-design conditions, supersonic air inlets often encounter the problem of aerodynamic instability, called inlet buzz, which causes the significant degradation of the engine performance. An experimental and numerical study was conducted to investigate the phenomenon of supersonic inlet buzz on a generic, axisymmetric, external-compression inlet with a single-surface center-body. It is understood the mechanism of buzz onset as proving that the origin of buzz is the flow choking induced by separation at the intake throat. Also it is observed the intermittent and continuous buzz mode as area ratio varies and understood the transition process through this study. The buzz frequency become to be higher as decreasing the area ratio, but for each area ratio, the frequency of pressure oscillation is the same at all points of intake.
Keywords
Ramjet Engine; Supersonic Air Inlet; Buzz; Back Pressure; Area Ratio;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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