Method of enhancing microthruster performance
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United States of America Patent
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Dec 24, 2013
Grant Date -
Mar 11, 2010
app pub date -
May 14, 2009
filing date -
May 14, 2008
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Abstract
Coaxial micronozzles are disclosed. Embodiments of the present disclosure include coaxial micronozzles with center-body geometries to exploit pressure thrust. Some embodiemnts include a generally cylindrical centerbody extending through at least a portion of the flowpath and extending into the exit so as to form a generally annular throat, wherein the microthruster is adapted and configured such that the Reynolds number through the throat is less than about one thousand. Some embodiments show a potential threefold increase in specific impulse under vacuum and near vacuum conditions.
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