Research on Acoustic Environment during Rocket Launch

Abstract

In this study, numerical calculations of sound propagation for a simply modeled rocket plume duct with different jet configurations of H-IIA202 and 204 rockets have been conducted. The Euler flow calculation option of a hybrid Euler/LEE (Linearized Euler Equation) code is used. The results of these calculations indicate that the sound waves from the modeled rocket plume duct have different frequency characteristics according to the jet configurations.