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Design and Test of a Deployable Radiation Cover for the REgolith X-Ray Imaging SpectrometerThe REgolith X-ray Imaging Spectrometer (REXIS) instrument contains a one-time deployable radiation cover that is opened using a shape memory alloy actuator (a "Frangibolt") from TiNi Aerospace and two torsion springs. The door will be held closed by the bolt for several years in cold storage during travel to the target asteroid, Bennu, and it is imperative to gain confidence that the door will open at predicted operational temperatures. This paper briefly covers the main design features of the radiation cover and measures taken to mitigate risks to cover deployment. As the chosen FD04 model Frangibolt actuator has minimal flight heritage, the main focus of this paper is the testing, results and conclusions with the FD04 while discussing key lessons learned with respect to the use of the FD04 actuator in this application.
Document ID
20150004054
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Carte, David B.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Inamdar, Niraj K.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Jones, Michael P.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Masterson, Rebecca A.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
April 2, 2015
Publication Date
May 1, 2014
Publication Information
Publication: The 42nd Aerospace Mechanism Symposium
Subject Category
Solid-State Physics
Spacecraft Design, Testing And Performance
Meeting Information
Meeting: Aerospace Mechanism Symposium
Location: Greenbelt, MD
Country: United States
Start Date: May 14, 2014
End Date: May 16, 2014
Sponsors: NASA Goddard Space Flight Center
Distribution Limits
Public
Copyright
Public Use Permitted.
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