Underexpanded jet-freestream interactions on an axisymmetric afterbody configuration

Mathur, NB and Yajnik, KS (1990) Underexpanded jet-freestream interactions on an axisymmetric afterbody configuration. AIAA Journal, 28 (1). pp. 47-50. ISSN 0001-1452

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Abstract

Experimental investigations are carried out in the 0.3 m trisonic wind tunnel at NAL to study exhaust jet-freestream interactions on an axisymmetric afterbody configuration. The model chosen for these studies is an equivalent body of revolution of a representative combat aircraft configuration. The effects of jet pressure ratio and freestream Mach number on boattail, base, and afterbody pressure drag are studied along with color Schlieren flow visualization of the afterbody flowfield. Experiments are carried out in the freestream Mach number range of 0.6 to 1.1 at Reynolds number from 20 amp;times; 10lt;supgt;6lt;/supgt;/m to 35 amp;times; 10lt;supgt;6lt;/supgt;/m keeping model at zero degree of incidence. Jet pressure ratio is varied from 1 to 6 during this investigation. The jet at nozzle exit is sonic throughout these tests.

Item Type: Article
Additional Information: Copyright for this article belongs to AIAA
Uncontrolled Keywords: Flow of fluids;Flow interactions;Wind tunnels;Visualization13; aerodynamics;Mechanical variables measurement--Flow
Subjects: AERONAUTICS > Aerodynamics
Depositing User: Users 10 not found.
Date Deposited: 18 Mar 2010
Last Modified: 07 Jun 2010 08:05
URI: http://nal-ir.nal.res.in/id/eprint/4201

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