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A Ground-Based Study on Extruder Standoff Distance for the 3D Printing in Zero Gravity Technology Demonstration MissionAnalysis of phase I specimens produced as part of the 3D printing in zero G technology demonstration mission exhibited some differences in structure and performance for specimens printed onboard the International Space Station (ISS) and specimens produced on the ground with the same printer prior to its launch. This study uses the engineering test unit for the printer, identical to the unit on ISS, to conduct a ground-based investigation of the impact of the distance between the extruder tip and the build tray on material outcomes. This standoff distance was not held constant for the phase I flight prints and is hypothesized to be a major source of the material variability observed in the phase I data set.
Document ID
20170005539
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Publication (TP)
Authors
Prater, T. J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Bean, Q. A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Werkheiser, N. J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Beshears, R. D. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Rolin, T. D. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Rabenberg, E. M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Soohoo, H. A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Ledbetter, F. E., III (Wheelhouse Consulting, LLC Huntsville, AL, United States)
Bell, S. C. (Jacobs Engineering and Science Services and Skills Augmentation Group (ESSSA) Huntsville, AL, United States)
Date Acquired
June 14, 2017
Publication Date
June 1, 2017
Subject Category
Spacecraft Design, Testing And Performance
Lunar And Planetary Science And Exploration
Report/Patent Number
M-1433
NASA/TP-2017-219631
Distribution Limits
Public
Copyright
Public Use Permitted.

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