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Acoustic positioning for space processing experimentsAn acoustic positioning system is described that is adaptable to a range of processing chambers and furnace systems. Operation at temperatures exceeding 1000 C is demonstrated in experiments involving the levitation of liquid and solid glass materials up to several ounces in weight. The system consists of a single source of sound that is beamed at a reflecting surface placed a distance away. Stable levitation is achieved at a succession of discrete energy minima contained throughout the volume between the reflector and the sound source. Several specimens can be handled at one time. Metal discs up to 3 inches in diameter can be levitated, solid spheres of dense material up to 0.75 inches diameter, and liquids can be freely suspended in l-g in the form of near-spherical droplets up to 0.25 inch diameter, or flattened liquid discs up to 0.6 inches diameter. Larger specimens may be handled by increasing the size of the sound source or by reducing the sound frequency.
Document ID
19740027149
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Whymark, R. R. (Intersonics, Inc. Chicago, IL, United States)
Date Acquired
September 3, 2013
Publication Date
September 11, 1974
Subject Category
Space Sciences
Report/Patent Number
NASA-CR-120474
Accession Number
74N35262
Funding Number(s)
CONTRACT_GRANT: NAS8-30471
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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