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Alumina-based monopropellant microthruster with integrated heater, catalytic bed and temperature sensors
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.ORCID iD: 0000-0002-5452-7831
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.ORCID iD: 0000-0001-7715-3142
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology, Ångström Space Technology Centre (ÅSTC).
SSC Nanospace.
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2016 (English)In: 27th Micromechanics And Microsystems Europe Workshop (Mme 2016) / [ed] IOP, Institute of Physics (IOP), 2016, Vol. 757, article id 012025Conference paper, Published paper (Refereed)
Abstract [en]

A liquid propellant alumina microthruster with an integrated heater, catalytic bed and two temperature sensors has been developed and tested using 30 wt. % hydrogen peroxide. The temperature sensors and the catalytic bed were screen-printed using platinum paste on tapes of alumina that was stacked and laminated before sintering. In order to increase the surface of the catalytic bed, the platinum paste was mixed with a sacrificial paste that disappeared during sintering, leaving behind a porous and rough layer. Complete evaporation and combustion, resulting in only gas coming from the outlet, was achieved with powers above 3.7 W for a propellant flow of 50 μl/min. At this power, the catalytic bed reached a maximum temperature of 147°C. The component was successfully operated up to a temperature of 307°C, where it cracked.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2016. Vol. 757, article id 012025
Series
Journal of Physics Conference Series, ISSN 1742-6588, E-ISSN 1742-6596 ; 757
National Category
Nano Technology
Research subject
Engineering Science with specialization in Microsystems Technology
Identifiers
URN: urn:nbn:se:uu:diva-308596DOI: 10.1088/1742-6596/757/1/012025ISI: 000439687000025OAI: oai:DiVA.org:uu-308596DiVA, id: diva2:1050367
Conference
27th Micromechanics and Microsystems Europe (MME) Workshop, Aug 28-30, 2016, Cork, Ireland
Funder
Swedish National Space BoardKnut and Alice Wallenberg FoundationAvailable from: 2016-11-28 Created: 2016-11-28 Last updated: 2020-01-08Bibliographically approved

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Khaji, ZahraKlintberg, LenaThornell, Greger

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