Effect of H2O2 injection patterns on catalyst bed characteristics

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The decomposition process of hydrogen peroxide can be applied to a bipropellant thruster, as well as to monopropellant thruster. To provide a framework for the optimal design of the injector and catalyst bed depending on a type of thruster, this research scrutinizes the effect of injection patterns of the propellant on the performance of the catalyst bed. A showerhead injector and impinging jet injector were tested with a 50 N monopropellant thruster. Manganese oxide/gamma-alumina catalyst and manganese oxide/lanthanum-doped alumina catalyst were prepared and tested. The showerhead injector provided a fast response time, suitable for pulse mode operation. The impinging jet injector mitigated the performance instability and catalyst attrition that is favorable for large scale bipropellant thrusters. The design of a dual catalyst bed was conceptually proposed based on the data obtained from firing tests.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2017-01
Language
English
Article Type
Article
Keywords

MONOPROPELLANT THRUSTER; HYDROGEN

Citation

ACTA ASTRONAUTICA, v.130, pp.75 - 83

ISSN
0094-5765
DOI
10.1016/j.actaastro.2016.10.023
URI
http://hdl.handle.net/10203/219600
Appears in Collection
AE-Journal Papers(저널논문)
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