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http://dx.doi.org/10.5139/JKSAS.2022.50.5.297

Performance Characteristics of Hypersonic External Compression Inlet Using Isentropic Compression Surface  

Kim, Young Jin (Department of Aerospace Engineering, Inha University)
Lee, Hyoung Jin (Department of Aerospace Engineering, Inha University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.50, no.5, 2022 , pp. 297-308 More about this Journal
Abstract
Most air-breathing aircraft operated in the hypersonic region are equipped with a scramjet engine. In a scramjet engine, a shock wave generated at an inlet acts as a compressor for a general gas turbine engine instead, so total pressure loss caused by the shock wave is considered very important. In this study, to minimize total pressure loss, a method of designing an external compression inlet using isentropic compression surface was proposed, and an external compression inlet with 3-deflection angles and Busemann inlet were designed under the same conditions. After that, through computational analysis, the performance characteristics at off-design conditions were compared. Each inlet shape was truncated according to the length of the 3-ramp external compression inlet, and the boundary layer correction was performed. The isentropic external compression inlet showed superior performance at the design point, but under the off-design conditions, its performance was degraded compared to the 3-ramp external compression inlet.
Keywords
Hypersonic Inlet; Off-design Condition; Isentropic Compression Surface; Total Pressure Recovery; Boundary Layer Correction;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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