A Theoretical And Experimental Investigation Of The Acoustic Response Of Cavities In An Aerodynamic Flow

Item

Title
A Theoretical And Experimental Investigation Of The Acoustic Response Of Cavities In An Aerodynamic Flow
Date
1962
Index Abstract
Contrails and DTIC
Photo Quality
Complete
Report Number
WADD TR 61-75
Creator
Plumblee, H. E.
Lassiter, L. W.
Gibson, J. S.
Corporate Author
Flight Dynamics Laboratory
Laboratory
Flight Dynamics Laboratory
Extent
164
Identifier
AD0277803
AD0277803
Access Rights
OTS
Distribution Classification
1
Contract
AF 33(616)-6966
DoD Project
1370
DoD Task
137005
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Date Modified
Scanned by request 3/6/2006 submitted by Università di Roma "La Sapienza" (University - International)
Report Availability
Full text available
Date Issued
1962-03
Abstract
Theory is developed for the resonant frequencies and pressure amplifications of a rectangular cavity of arbitrary dimensions in a flow field. An intermediate step involves the derivation of radiation impedance for a cavity at all Mach numbers, using the concepts of retarded potential theory. Experimental results are given for small cavities tested in the subsonic regime and for cavities up to 8" in length at supersonic Mach numbers from 1.75 to 5.0. Comparisons are drawn between theoretical and experimental frequency and amplitude response, indicating that the theory developed gives very good definition of the problem.
Subject
Aerodynamic Characteristics
Mathematical Analysis
Resonance
Pressure
Acoustics
Supersonic Flow
Integral Equations
Acoustic Properties
Publisher
Wright-Patterson Air Force Base, OH : Flight Dynamics Laboratory, Aeronautical Systems Division, Air Force Systems Command
Distribution Conflict
No
Provenance
Lockheed Martin Missiles & Fire Control
Type
report
Format
1 online resource