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