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Demonstration of a single use microsystem valve for high gas pressure applications
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
2007 (English)In: Journal of Micromechanics and Microengineering, ISSN 0960-1317, E-ISSN 1361-6439, Vol. 17, no 3, 472-481 p.Article in journal (Refereed) Published
Abstract [en]

Demonstrated and characterized here is a single use valve developed for high-pressure applications. Incorporated within the single use valve is a particle filter. The filter serves to remove any particle debris created by the activation process. The valve is solder sealed to be leakage proof. The solder is remelted to obtain activation of the valve. Local heater elements are incorporated on the valve surface together with solder wetting pads. The gas mass flow through the device was evaluated prior to sealing and after activation. The valve was functional at pressures of 100 bar, and opened in less than 10 s with an applied power of 13 W.

Place, publisher, year, edition, pages
2007. Vol. 17, no 3, 472-481 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-94874DOI: 10.1088/0960-1317/17/3/008ISI: 000245433800008OAI: oai:DiVA.org:uu-94874DiVA: diva2:168879
Available from: 2006-09-15 Created: 2006-09-15 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Fluidic Microsystems for Micropropulsion Applications in Space
Open this publication in new window or tab >>Fluidic Microsystems for Micropropulsion Applications in Space
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Spacecraft on interplanetary missions or advanced satellites orbiting the Earth all require propulsion systems to complete their missions. Introducing microelectromechanical systems technology to the space industry will not only reduce size and weight of the propulsion system, but can also increase the performance of the mission.

Fluid handling systems are used in chemical and electric propulsion. Some components incorporated in a fluidic handling system are presented and evaluated in this work.

Microsystems are very sensitive to contamination. Reliable, robust, and easily integrated filters were modeled, manufactured, and experimentally verified.

A fluid connector, designed to withstand large temperature variations and aggressive propellants was manufactured and characterized. Similar designs was also be used as a thermally activated minute valve.

The feasibility of a cold gas system for precise attitude control has been demonstrated. Steps towards improving the performance (from specific im-pulse 45 s) have been taken, by the integration of suspended heater elements.

For electric propulsion, two thermally regulated flow restrictors have been characterized. These devices can fine-tune the propellant flow to e.g. an ion engine.

A single-use valve using a soldered seal has also been successfully dem-onstrated within a pressure range of 5 to 100 bar.

The microsystem-based propulsion systems of tomorrow’s spacecraft need to be demonstrated in space, in order to gain necessary credibility.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2006. 34 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 223
Keyword
Engineering physics, microelectromechanical systems, MEMS, MST, microsystem, microfluidics, silicon, spacecraft, propulsion, space technology, Teknisk fysik
Identifiers
urn:nbn:se:uu:diva-7148 (URN)91-554-6655-9 (ISBN)
Public defence
2006-10-06, Polhelmssalen, Ångströmslaboratoriet, Lägerhyddsvägen 1, Uppsala, 09:15
Opponent
Supervisors
Available from: 2006-09-15 Created: 2006-09-15 Last updated: 2013-09-26Bibliographically approved

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