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High-temperature zi...
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Lekholm, Ville,1976-Uppsala universitet,Mikrosystemteknik,ÅSTC
(author)
High-temperature zirconia microthruster with integrated flow sensor
- Article/chapterEnglish2013
Publisher, publication year, extent ...
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2013-03-25
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IOP Publishing,2013
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Numbers
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LIBRIS-ID:oai:DiVA.org:uu-186257
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-186257URI
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https://doi.org/10.1088/0960-1317/23/5/055004DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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This paper describes the design, fabrication and characterization of a ceramic, heated cold-gas microthruster device made with silicon tools and high temperature co-fired ceramic processing. The device contains two opposing thrusters, each with an integrated calorimetric propellant flow sensor and a heater in the stagnation chamber of the nozzle. The exhaust from a thruster was photographed using schlieren imaging to study its behavior and search for leaks. The heater elements were tested under a cyclic thermal load and to the maximum power before failure. The nozzle heater was shown to improve the efficiency of the thruster by 6.9%, from a specific impulse of 66 to 71 s, as calculated from a decrease of the flow rate through the nozzle of 13%, from 44.9 to 39.2 sccm. The sensitivity of the integrated flow sensor was measured to 0.15 m Omega sccm(-1) in the region of 0-15 sccm and to 0.04 m Omega sccm(-1) above 20 sccm, with a zero-flow sensitivity of 0.27 m Omega sccm(-1). The choice of yttria-stabilized zirconia as a material for the devices makes them robust and capable of surviving temperatures locally exceeding 1000 degrees C.
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Persson, AndersUppsala universitet,Institutionen för fysik och astronomi(Swepub:uu)andpe782
(author)
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Palmer, KristofferUppsala universitet,Mikrosystemteknik,ÅSTC(Swepub:uu)kripa149
(author)
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Ericson, FredricUppsala universitet,Mikrosystemteknik(Swepub:uu)frederic
(author)
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Thornell, GregerUppsala universitet,Mikrosystemteknik,ÅSTC(Swepub:uu)gth12095
(author)
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Uppsala universitetMikrosystemteknik
(creator_code:org_t)
Related titles
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In:Journal of Micromechanics and Microengineering: IOP Publishing23:5, s. 055004-0960-13171361-6439
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