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Relation between shock unsteadiness and the origin of side-loads insidea thrust optimized parabolic rocket nozzle

Verma, Shashi B. and Stark, Ralf and Haidn, Oskar J. (2006) Relation between shock unsteadiness and the origin of side-loads insidea thrust optimized parabolic rocket nozzle. Aerospace Science and Technology, pp. 474-483.

Full text not available from this repository.

Abstract

This paper reports the results from tests carried out on a thrust optimized parabolic (TOP) nozzle to study the influence of the unsteady characteristics of fluctuating separation and reattachment shocks towards the possible origin of lateral forces in rocket nozzle flows. The study was conducted using wall pressure measurements both in axial and circumferential directions, surface oil visualization technique and from strain gauges installed on the nozzle bending tube. Experiments reveal that the nozzle pressure ratios, at which the peaks in maximum rms values occur for separation and reattachment shocks, to coincide with the nozzle pressure ratios at which peaks in strain gauge signal are observed. This indicates that the fluctuating nature of separation and reattachment shocks as directly responsible for origin of side-loads in rocket nozzle flows.

Item URL in elib:https://elib.dlr.de/49260/
Document Type:Article
Title:Relation between shock unsteadiness and the origin of side-loads insidea thrust optimized parabolic rocket nozzle
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Verma, Shashi B.NAL, BangaloreUNSPECIFIED
Stark, RalfUNSPECIFIEDUNSPECIFIED
Haidn, Oskar J.UNSPECIFIEDUNSPECIFIED
Date:2006
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Page Range:pp. 474-483
Status:Published
Keywords:Thrust Optimized Nozzle, Separation, Restricted Shock Separation
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Stark, Dr.-Ing. Ralf
Deposited On:03 Jul 2007
Last Modified:27 Apr 2009 13:56

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