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Coating Investigations on the Hyperboloid Flare

Krek, R.M. and Eitelberg, G. and Kastell, D. (1995) Coating Investigations on the Hyperboloid Flare. DLR-Interner Bericht. 223-95 A 42, 60 S.

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Abstract

Experiments on a Hyperboloid Flare model have been carried out in the HEG. The thermocouples on the model were coated with various metals to investigate surface catalysis. The pressure and heat transfer profiles indicate that the flow is uniform and repeatable for both conditions tested. Investigation into surface catalysis indicate that all materials tested for the coating resulted in lower heat transfer rates than theuncoated model. The reasons for this could be that the coatings are acting as an insulating layer or that there are water molecules on the coating inhibiting catalysis. Comparison of tests conducted with air and Nitrogen as the test gases, when the heat transfer is evaluated by forming a local Stanton number, suggest that there couldbe surface reactions occurring.

Document Type:Monograph (DLR-Interner Bericht)
Additional Information: LIDO-Berichtsjahr=1995,
Title:Coating Investigations on the Hyperboloid Flare
Authors:
AuthorsInstitution or Email of Authors
Krek, R.M.UNSPECIFIED
Eitelberg, G.UNSPECIFIED
Kastell, D.UNSPECIFIED
Date:1995
Number of Pages:60
Status:Published
Keywords:Hyperboloid Flare, Catalycity, Heat Transfer, Coating, Enthalpy
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:UNSPECIFIED
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:08

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