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First experimental results on the nozzle/base flow interaction for Launcher configurations

Henckels, Andreas und Gruhn, Patrick und Gülhan, Ali (2005) First experimental results on the nozzle/base flow interaction for Launcher configurations. In: 6th International Symposium on Launcher Technologies. Flight Environment Control for Future and Operational Launchers, 2005-11-08 - 2005-11-11, München (Deutschland).

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Kurzfassung

In order to achieve an improved understanding of the interaction of the nozzle flow with the base flow an experimental study on a generic model has been carried out in the DLR hypersonic wind tunnel H2K. For experimental simulations a 1:50 scaled model representing the base region of the Liquid Fly-Back Boosters (LFBB) configuration, which is one of the possible future booster options for Ariane, has been designed. To distinguish between different physical effects, the geometry of the model was kept as simple as possible, i.e. as a single nozzle configuration. The test condition was defined to reproduce the LFBB trajectory point at Mach 5.3 and 50 km altitude. This paper covers a detailed description of the experimental set up including the complex model design as well as results gained by the first experiments. The main objective of these preliminary tests was to check the experimental test concept and the instrumentation. These runs with cold nozzle flow but realistic external flow simulation were performed at several pressure ratios. Surface pressure measurements and schlieren visualization were combined to study the flow topology. The first high speed images, although at the relative low frame rate of 3 kHz, already visualized fluctuations in the flow field.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:First experimental results on the nozzle/base flow interaction for Launcher configurations
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Henckels, AndreasNICHT SPEZIFIZIERT
Gruhn, PatrickNICHT SPEZIFIZIERT
Gülhan, AliNICHT SPEZIFIZIERT
Datum:November 2005
Erschienen in:6th International Symposium on Launcher Technologies
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
ESA, NICHT SPEZIFIZIERT
Status:veröffentlicht
Stichwörter:Experimental study, nozzle flow, H2K, LFBB
Veranstaltungstitel:Flight Environment Control for Future and Operational Launchers
Veranstaltungsort:München (Deutschland)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2005-11-08 - 2005-11-11
Veranstalter :ESA
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W RP - Raumtransport
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):W - Grundlagen Raumtransport - Anlagen und Messtechnik (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: Christine Adams
Hinterlegt am:07 Dez 2005
Letzte Änderung:14 Jan 2010 20:15

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