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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2019028072
pages 321-336

CATALYTIC EFFECTIVITY OF PRINTED MONOLITHIC STRUCTURES WITH HYDROGEN PEROXIDE – MODELING AND EXPERIMENTAL RESULTS

Robert-Jan Koopmans
FOTEC Forschungs- und Technologietransfer GmbH, Viktor Kaplan-Straße, 2700-A Wiener Neustadt, Austria
Varun Nandyala
FOTEC Forschungs- und Technologietransfer GmbH, Viktor Kaplan-Straße, 2700-A Wiener Neustadt, Austria
Sara Pavesi
FOTEC Forschungs- und Technologietransfer GmbH, Viktor Kaplan-Straße, 2700-A Wiener Neustadt, Austria
Yann Batonneau
CNRS UMR 7285, IC2MP, University of Poitiers, France
Corentin Maleix
CNRS UMR 7285, IC2MP, University of Poitiers, France
Romain Beauchet
CNRS UMR 7285, IC2MP, University of Poitiers, France
Martin Schwentenwein
Lithoz GmbH, Vienna, Austria
Manfred Spitzbart
Lithoz GmbH, Vienna, Austria
Altan Alpay Altun
Lithoz GmbH, Vienna, Austria
Carsten Scharlemann
Fachhochschule Wiener Neustadt, Wiener Neustadt, Austria

要約

A key requirement for catalysts used for space propulsion applications is, amongst others, a rapid response time. This is often assessed in terms of how long it takes for a thruster to reach 95% of the steady-state thrust or pressure from the moment the flow valve is opened. Equally important, however, is to assess what the average lifetime of a pocket of fluid entering the catalyst bed is. To this end, a set of four different 3D-printed catalysts was subjected to a flow of highly concentrated hydrogen peroxide. The effectiveness of the catalyst was assessed with respect to the amount of liquid present during steady-state operation. To assist the assessment, a simple depletion model was developed. For this purpose, four different gas-to-liquid conversion models were employed. It was found that the model produces accurate results for about 65% of the initial depletion of the decomposition chamber. Given the layout of the system that was used for testing, it is believed that one of the key assumptions, namely that no liquid is entering the decomposition chamber anymore, is not entirely met. Based on only the first 65% of the depletion process, it was estimated that between 18 and 29% of the accessible decomposition chamber volume is occupied by liquid during steady-state operation.


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