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A Low Power Cryogenic Shutter Mechanism for Use in Infrared ImagersThis paper discusses the requirements, design, operation, and testing of the shutter mechanism for the Infrared Array Camera (IRAC). The shutter moves a mirror panel into or out of the incoming light path transitioning IRAC between data acquisition and calibration modes. The mechanism features a torsion flexure suspension system, two low-power rotary actuators, a balanced shaft, and a variable reluctance position sensor. Each of these items is discussed along with problems encountered during development and the implemented solutions.
Document ID
20000048381
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Schwinger, D. Scott (NASA Goddard Space Flight Center Greenbelt, MD United States)
Hakun, Claef F. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 19, 2013
Publication Date
May 1, 2000
Publication Information
Publication: 34th Aerospace Mechanisms Symposium
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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