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Convective and Film Cooled Nozzle Extension for a High Pressure Rocket Subscale Combustion Chamber

Suslov, D. I. and Arnold, R. and Haidn, O. J. (2010) Convective and Film Cooled Nozzle Extension for a High Pressure Rocket Subscale Combustion Chamber. 48th AIAA Aerospace Sciences Meeting, January 4th-7th, Orlando, FL.

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Abstract

Experimental investigations have been carried out to study heat transfer, flow separation, and side loads in a subscale nozzle extension. A Vulcain 2-like nozzle geometry has been tested with combustion chamber pressures up to 13 MPa. A new manufacturing technology has been demonstrated with minimized contour deformation during fabrication. Gaseous hydrogen was used to cool the upper part of the nozzle while flowing through helical, rectangular cooling channels. At a nozzle area expansion ratio of approx. 32 the hydrogen has been injected with supersonic velocity as a film to protect the lower part of the nozzle from the influences of the hot gas. Investigations with varying coolant mass flow rates have shown a stable and safe nozzle operation at real rocket engine-like conditions.

Document Type:Conference or Workshop Item (Paper)
Title:Convective and Film Cooled Nozzle Extension for a High Pressure Rocket Subscale Combustion Chamber
Authors:
AuthorsInstitution or Email of Authors
Suslov, D. I.DLR
Arnold, R.DLR
Haidn, O. J.DLR
Date:January 2010
Status:Published
Keywords:Film cooling, Subscale combustion chamber, Nozzle extension, Rocket engine
Event Title:48th AIAA Aerospace Sciences Meeting
Event Location:Orlando, FL
Event Type:international Conference
Event Dates:January 4th-7th
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 - Antriebskonzepte (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Raketenantriebe
Institute of Space Propulsion > Technologie
Deposited By: Richard Arnold
Deposited On:14 Jan 2010 09:10
Last Modified:12 Dec 2013 20:51

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