Methods of reducing low frequency cabin noise and sonically induced stresses, based on the intrinsic structural tuning conceptControl of low frequency interior noise has been difficult in all commercial and general aviation aircraft, since the existing sound attenuation techniques are less effective at these frequencies. Therefore low frequency cabin noise and sonically induced stresses can be reduced mainly by a proper design of the fuselage structure. For this purpose, a concept based on intrinsic tuning and damping of fuselage structural elements has been under development at Boeing for the past three years. This paper describes the results of some laboratory and field tests that were conducted for evaluation of the concept.
Document ID
19770042950
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Sengupta, G. (Boeing Commercial Airplane Co. Seattle, Wash., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1977
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 77-444
Meeting Information
Meeting: Conference on Structures, Structural Dynamics and Materials