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Successful Use of Microporous Polytetrafluoroethylene Flexible Thin Sheets in NASA's OSIRIS-REx MissionMicroporous black polytetrafluoroethylene (PTFE) flexible thin sheets are successfully flown as solar diffusers on NASA's Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft. They serve as multilayer insulation (MLI) blanket outer covers for the arm of the Touch And Go Sample Acquisition Mechanism (TAGSAM), the sunshade of the OSIRIS-REx Camera Suite (OCAMS) PolyCam imager, and the motor riser of the OCAMS SamCam imager. Additionally, microporous white PTFE flexible thin sheets are successfully flown as a MLI blanket outer cover with a low ratio of absorptance to emittance for the Regolith X-ray Imaging Spectrometer (REXIS). For ground testing, microporous black and white PTFE flexible thin sheets were successfully used as optical targets of the Touch And Go Camera System (TAGCAMS) NavCam imagers in the flight system thermal vacuum test.
Document ID
20190029271
Document Type
Conference Paper
Authors
Choi, Michael K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bos, Brent J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tveekrem, June L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
D'aubigny, Christian (Arizona Univ. Tucson, AZ, United States)
Rizk, Bashar (Arizona Univ. Tucson, AZ, United States)
Lauretta, Dante S. (Arizona Univ. Tucson, AZ, United States)
Date Acquired
August 21, 2019
Publication Date
August 19, 2019
Subject Category
Spacecraft Design, Testing and Performance
Report/Patent Number
GSFC-E-DAA-TN66475
Meeting Information
AIAA Propulsion and Energy Forum and Exposition(Indianapolis, IN)
Funding Number(s)
CONTRACT_GRANT: NNM10AA11C
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Technical Review
Single Expert
Keywords
OSIRIS-REx

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