Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Experimental Study Of The Random Vibrations Of An Aircraft Structure Excited By Jet Noise

Report Number: WADD TR 61-70
Author(s): B.L.Clarkson And R.D.Ford
Corporate Author: University Of Southampton
Laboratory: Materials Central
Date of Publication: 1961-03
Pages: 36
Contract: AF 61(052)-332
Project: 7351 - Metallic Materials
Task: 73521
AD Number: AD0258591

Abstract:
Recordings have been made of the strains induced in a full scale rear fuselage test structure of the Caravelle air-liner when one jet engine is running at maximum take-off thrust. The analysis has been concentrated on the strains in the centers of panels. Correlation measurements indicate that the larger panel strains occur above 500 c. with the frames acting as boundaries. The main resonance peak in each panel has been identified with the fundamental stringer-twisting mode but the mode-shapes for the two smaller peaks have not been completely determined. An attempt has been made to calculate the panel resonant frequencies theoretically.

Download this report

(PDF, 1.09 MB, 36 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
No digitial image of an index entry indicating public availability is currently available
The inside cover of this report indicates that it was released for public sale