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High-temperature zi...
High-temperature zirconia microthruster with integrated flow sensor
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- Lekholm, Ville, 1976- (författare)
- Uppsala universitet,Mikrosystemteknik,ÅSTC
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- Persson, Anders (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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- Palmer, Kristoffer (författare)
- Uppsala universitet,Mikrosystemteknik,ÅSTC
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- Ericson, Fredric (författare)
- Uppsala universitet,Mikrosystemteknik
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- Thornell, Greger (författare)
- Uppsala universitet,Mikrosystemteknik,ÅSTC
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(creator_code:org_t)
- 2013-03-25
- 2013
- Engelska.
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Ingår i: Journal of Micromechanics and Microengineering. - : IOP Publishing. - 0960-1317 .- 1361-6439. ; 23:5, s. 055004-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Nyckelord
- Keywords: Zirconia
- YSZ
- HTCC
- schlieren imaging
- flow sensor
- microthruster
- Teknisk fysik med inriktning mot mikrosystemteknik
- Engineering Science with specialization in Microsystems Technology
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- art (ämneskategori)
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