Development of an Analytical and Numerical Tools for Launcher/Satellite Vibro-acoustic Prediction

Abstract

During flight mission, space vehicle is subjected to a severe fluctuating external-pressure loading when its rocket-propulsion system is operated in the atmosphere. Such acoustic loading and its frequency spectrum and Pogo effect, the acoustic loading results from the broad frequency-spectrum acoustic field generated by the mixing of the rocket-engine exhaust stream with the ambient atmosphere. Acoustic loads are principal source of structural vibration and internal noise during launch. This loading may be critical for vehicle components, as well as for the payload such as satellites. Coupled loads analysis (CLA) is a critical process for many high technology systems including launch vehicles and satellites. CLA predicts responses caused by major dynamic and loads events such. CLA helps to minimize risk and maximize the probability of mission success.Keywordssatellitecoupled load analysislaunch vehicleAcoustic