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  • 1
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    Acoustic Levitation System (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Dense materials, such as steel balls, continuously levitated with energy provided by efficient high-powered siren in combination with shaped reflector. Reflector system, consisting of curved top reflector and flat lower reflector, eliminates instability in spatial positioning of sample.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-16146 , NASA Tech Briefs (ISSN 0145-319X); 8; 4; P. 570
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Producing Metallic Glasses With Acoustic Leviation (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Acoustic fields support and cool liquid particles. Levitated by sound energy, liquid drop in acoustic standing-wave field surrounded by acousticically-induced jet streams. Streaming gas cools drow below its freezing point in small fraction of second. Allows new amorphous alloys including "metallic glass" to be formed.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-15658 , NASA Tech Briefs (ISSN 0145-319X); 7; 4; P. 472
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Hollow-Sphere Production Line (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: After initial formation, spheroids processed without contaminating touch of solid objects. Spheroid in process supported by acoustic levitation at each work station and transported between stations by combination of acoustic levritation and acoustic propulsion. Automatic sequence of target-pellet fabication allows no contact of solid ojbect with spheroids in process. Potential for manufacture of precise microcapsules for catalysts and medications.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-15592 , NASA Tech Briefs (ISSN 0145-319X); 7; 4; P. 471
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Sound Waves Levitate Substrates (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: System recently tested uses acoustic waves to levitate liquid drops, millimeter-sized glass microballoons, and other objects for coating by vapor deposition or capillary attraction. Cylindrical contactless coating/handling facility employs a cylindrical acoustic focusing radiator and a tapered reflector to generate a specially-shaped standing wave pattern. Article to be processed is captured by the acoustic force field under the reflector and moves as reflector is moved to different work stations.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-15435 , NASA Tech Briefs (ISSN 0145-319X); 6; 2; P. 217
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Hybrid Contactless Heating and Levitation (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Acoustic and electromagnetic fields applied. In contactless processing apparatus, acoustic and electromagnetic levitating fields employed alternately or simultaneously with amplitude of each controlled to produce various combinations of heating, cooling, and levitation. Apparatus provides rapid heating and cooling or slow heating and cooling for such processes as nucleation, crystallization, incubation, deep undercooling, and heterogeneity control.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-15657 , NASA Tech Briefs (ISSN 0145-319X); 9; 1; P. 144
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Acoustic-Levitation Chamber (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Uncontaminated environments for highly-pure material processing provided within completely sealed levitation chamber that suspends particles by acoustic excitation. Technique ideally suited for material processing in low gravity environment of space.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-16142 , NASA Tech Briefs (ISSN 0145-319X); 8; 2; P. 291
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Producing Refractory Microballoons (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Metals, ceramics, and glasses just some of possible raw materials. Key components of equipment for new microballoon fabrication process nozzle, crucible assembly, and drop tube. Recessed, conical inner orifice aids in producing uniform, symmetrical microballoons. All-graphite crucible assembly resistant to misalinement and cracks. Drop tube ensures timely solidification of microballoons used in fluidized-bed heat exchangers; as containers for hazardous materials; catalysts in chemical and pharmaceutical processes; solid fuel for rockets; fuel containers for fusion power experiments; shock-wave dampers; and starting materials for high-strength, low-density sintered alloys and ceramics.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-16489 , NASA Tech Briefs (ISSN 0145-319X); 10; 6; P. 83
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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