발사장치를 포함한 소형 초음속 제트 소음 예측 및 검증

다국어 초록 (Multilingual Abstract)

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.

참고문헌 (Reference)

1 Greska, B. J., 2008

2 Tsutsumi, S., "Study on Acoustic Prediction and Reduction of Epsilon Launch Vehicle at Liftoff" 52 (52): 350-361, 2015

3 Tam, C. K. W., "Spatial Discretization in Wave Number Space, Computational Aeroacoustics: A Wave Number Approach" Cambridge University Press 21-37, 2012

4 Gely, D., "Reduction of Supersonic Jet Noise - Application to the Ariane 5 Launch Vehicle" 2000

5 Varnier, J., "Noise Radiated from Free and Impinging Hot Supersonic Jets" 1998

6 Haynes, J., "Modifications to the NASA SP-8072 Distributed Source Method II for Area I Lift-off Environment Predictions" 2009

7 Housman, J. A., "Jet Noise Prediction Using Hybrid RANS/LES with Structured Overset Grids" 2017

8 Choi, H., "Grid-point Requirements for Large Eddy Simulation : Chapman’s Estimates Revisited" 24 (24): 011702-, 2012

9 Tsutsumi, S., "Effect of Launch System Shape on Acoustic Field of Launch Vehicle at Lift-off" 2009

10 Caruelle, B., "Detached-eddy Simulations of Attached and Detached Boundary Layers" 17 (17): 433-451, 2003

11 Bodony, D. J., "Current Status of Jet Noise Predictions Using Large-eddy Simulation" 46 (46): 364-380, 2008

12 Tsutsumi, S., "Assessing Prediction and Reduction Technique of Lift-off Acoustics Using Epsilon Flight Data" 2015

13 Ishii, T., "Acoustic Measurement of 1 : 42 Scale Booster and Launch Pad" 18 (18): 040009-, 2012

14 Eldred, K. M., "Acoustic Loads Generated by the Propulsion System" NASA 1971

15 Bodony, D. J., "433 Review of the Current Status of Jet Noise Predictions Using Large-eddy Simulation" 2006