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Analysis of SPAR 8 single-axis levitation experiment (1981)

Holland, R. L. ; Rush, J. E. ; Schafer, C. F.

In: CASI

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Publication Date: 2019-06-28

Description: The melting and resolidification of SPAR 8 payload melting and resolidification of a glass specimen from the in a containerless condition and the retrieval and examination of the specimen from the. The absence of container contact was assured by use of a single-axis acoustic levitation system. However, the sample contacted a wire cage after being held without container contact by the acoustic field for only approximately 87 seconds. At this time, the sample was still molten and, therefore, flowed aroung the wire and continued to adhere to it. An analysis of why the sample did not remain levitated free of container contact is presented. The experiment is described, and experimental observations are discussed and analyzed.

Keywords: ASTRONAUTICS (GENERAL)

Type: NASA-TM-82447

Format: application/pdf

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