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Variable-Diameter NozzleProposed device shapes and seals filled shells. Radial piezoelectric elements arranged like overlapping spokes on wheel contract to open hub and allow filled shell to emerge through. Stack of synchronized piezoelectric valves separated by spacers shape emerging pellet. Shells ranging in diameter from 2 millimeters to few centimeters produced.
Document ID
19870000209
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Wang, Taylor G. (Caltech)
Date Acquired
August 13, 2013
Publication Date
April 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 94
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
NPO-15623
ISSN: 0145-319X
Report Number: NPO-15623
Accession Number
87B10209
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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