A RESEARCH PROGRAM TO REDUCE INTERIOR NOISE IN GENERAL AVIATION AIRPLANES KU-FRL-317-6 NASA Grant NSG 1301 EXPERIMENTAL AND THEORETICAL SOUND TRANSMISSION THROUGH AIRCRAFT PANELS

摘要

This report describes the work performed under a National Aeronautics and Space Administration-funded research project on aircraft-oriented acoustics. This project is intended to provide information leading to the reduction of interior noise in general aviation airplanes.nThe more important recent events are presented. This includes a description of project operation, expansions in testing capabilities, and the principal findings since the previous reports (References 1, 2, and 3) were published.nEquipment for testing panels at non-normal incidence to sound is a noteworthy addition to the facility. This capability is expected to yield useful data which is otherwise very difficult to obtain, either theoretically or experimentally.