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Experimental Study on Flow Transition in Dual Bell Nozzles

Nürnberger-Génin, Chloé and Stark, ralf (2009) Experimental Study on Flow Transition in Dual Bell Nozzles. 45th Joint propulsion Conference, 2.-5. August 2009, Denver, Colorado.

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Abstract

The dual bell nozzle is a concept of altitude adaptive nozzles. The flow adapts to the altitude by separation at the wall inflection at low altitude, and full flowing at high altitude. To understand the phenomenology of the flow by the transition from sea level to high altitude mode, a series of tests have been made at the cold flow test bench P6.2 at DLR Lampoldshausen. Three nozzles with different geometries have been tested. Two of them were successively shortened and driven unter the same conditions for each extension length. This study yields the influence of the geometric parameters of the basis and the extension on the transition conditions. Furthermore a transition prediction is given.

Item URL in elib:https://elib.dlr.de/62752/
Document Type:Conference or Workshop Item (Paper)
Title:Experimental Study on Flow Transition in Dual Bell Nozzles
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nürnberger-Génin, ChloéUNSPECIFIEDUNSPECIFIED
Stark, ralfUNSPECIFIEDUNSPECIFIED
Date:2 August 2009
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Nozzle Flow, Dual-Bell, Transition
Event Title:45th Joint propulsion Conference
Event Location:Denver, Colorado
Event Type:international Conference
Event Dates:2.-5. August 2009
Organizer:AIAA
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:20 Jan 2010 08:25
Last Modified:20 Jan 2010 08:25

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