人工衛星まわりの音響環境子測法に関する研究

概要

論文の詳細を見る
The purpose of this study is to examine several methods and develop programs to predict the exterior sound environment of rockets and fairing's interior sound pressure level around spacecraft at lift-off. As a result, we found the following : 1) predicted results of the exterior sound environment are in good agreement with real flight environments using the acoustic efficiency of a rocket engine estimated from the improved Wyle Lab. Method. 2) The interior sound pressure level can be predicted with fairly good accuracy by finite element method for the low-frequency range and by acoustic statistical energy analysis which considers the energy flow between the many small acoustic space elements constituting the acoustic field for the high-frequency range. The developed prediction method will be effectively applied to predict the input acoustic level for the estimation of spacecraft's responce by acoustic excitation.
一般社団法人日本機械学会の論文
1989-03-25