Analytical and Experimental Investigation of the Acoustic Environment of the RTD Sonic Fatigue Main Test Chamber

Item

Title
Analytical and Experimental Investigation of the Acoustic Environment of the RTD Sonic Fatigue Main Test Chamber
Date
1964
Index Abstract
Coming Soon
Photo Quality
Complete
Report Number
FDL TDR 64-26
Creator
Tyzzer, Franklin G.
Pernet, David F.
Corporate Author
IIT Research Institute
Laboratory
AF Flight Dynamics Laboratory
Extent
114
Identifier
AD0601611
Access Rights
OTS
Distribution Classification
1
Contract
AF 33(657)-10927
DoD Project
4437
DoD Task
443701
DTIC Record Exists
No
Distribution Change Authority Correspondence
None
Abstract
The extreme versatility of the RTD Sonic Fatigue Facility creates problems in analysis and control of attainable environments. Acoustic environments have been analyzed using both theoretical and experimental modelling techniques, with regard to spatial distribution and correlation of sound pressures. A diffuse field study has enabled predictions of sound fields to be made for many cases of source and test structure parameters. Progressive-wave operation of the facility for small groups of sources was analyzed and some typical pressure field distributions were evaluated. The modifying effect on the progressive wave pressure fields, caused by locating test structures in these fields, was studied with respect to the size, location, and orientation of test-structures, the operational frequency of the source system and the relationship between the individual sources forming the overall system. Conditions were established for obtaining uniform, gradual, or rapid variations, and alternate maxima and minima in sound pressure level on the exposed surfaces of structures.
Report Availability
Full text available
Date Issued
1964-04
Provenance
Lockheed Martin Missiles & Fire Control
Type
report
Format
1 online resource