National Advisory Committee for Aeronautics


SUMMARY The present work is part of a program, the objective of which is to find practicable ways of reducing the external noise level of light airplanes in order to make them less objectionable to persons on the ground. This report covers noise measurements on standard light airplanes and on similar airplanes equipped with engine mufflers, propeller… (More)


Cite this paper

@inproceedings{BeranekNationalAC, title={National Advisory Committee for Aeronautics}, author={Leo L. Beranek and Fred S. Elwell and John Park Roberts and C. Fayette Taylor} }