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Sonic levitation apparatusA sonic levitation apparatus is disclosed which includes a sonic transducer which generates acoustical energy responsive to the level of an electrical amplifier. A duct communicates with an acoustical chamber to deliver an oscillatory motion of air to a plenum section which contains a collimated hole structure having a plurality of parallel orifices. The collimated hole structure converts the motion of the air to a pulsed. Unidirectional stream providing enough force to levitate a material specimen. Particular application to the production of microballoons in low gravity environment is discussed.
Document ID
19840020499
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Dunn, S. A. (Bjorksten Research Labs., Inc., Madison Wis., United States)
Pomplum, A. R. (Bjorksten Research Labs., Inc., Madison Wis., United States)
Paquette, E. G. (Bjorksten Research Labs., Inc., Madison Wis., United States)
Ethridge, E. C. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Johnson, J. L. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 4, 2013
Publication Date
May 8, 1984
Subject Category
Acoustics
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-493866
Patent Number: NASA-CASE-MFS-25828-1
Patent Number: US-PATENT-4,447,251
Accession Number
84N28568
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MFS-25828-1|US-PATENT-4,447,251
Patent Application
US-PATENT-APPL-SN-493866

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