The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2013
Filed:
May. 14, 2009
William Benjamin Stein, West Lafayette, IN (US);
Alina A. Alexeenko, West Lafayette, IN (US);
Ivana Hrbud, Lafayette, IN (US);
Darren L. Hitt, Jericho, VT (US);
William Benjamin Stein, West Lafayette, IN (US);
Alina A. Alexeenko, West Lafayette, IN (US);
Ivana Hrbud, Lafayette, IN (US);
Darren L. Hitt, Jericho, VT (US);
Purdue Research Foundation, West Lafayette, IN (US);
University of Vermont, Burlington, VA (US);
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.