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발사장치를 포함한 소형 초음속 제트 소음 예측 및 검증
주현식(Hyun-Shik Joo),박태영(Taeyoung Park),강승훈(Seung-Hoon Kang),장인만(Inman Jang),엄원석(Won-Suk Ohm),신상준(Sang-Joon Shin) 한국소음진동공학회 2020 한국소음진동공학회 논문집 Vol.30 No.2
A launch system is used to vertically launch a high-speed rocket or space vehicle. During the launch event, intense acoustic load is generated from the downstream of the supersonic jet and propagated in all the directions. In this study, two types of the supersonic jet noises were investigated: 1) noise of a supersonic free jet and 2) noise of an impinging jet with a launch system. Aero-acoustic predictions were performed using numerical simulations and further validated against experimental results obtained through a small-scale model test for the supersonic free jet and impinging jet with the launch system. Moreover, various types of launch systems for noise reduction are demonstrated experimentally.