NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The IRAC Shutter Mechanism: Residual Magnetism and the Rotary SolenoidThe Infrared Array Camera (IRAC) Shutter mechanism was originally presented in the paper, 'A Low Power Cryogenic Shutter Mechanism for Use on Infrared Imagers' at the 34th Aerospace Mechanisms Symposium, May 2000. At that time, the shutter was believed to be performing flawlessly and there was every indication it would continue to do so. In early spring of 2001, the calibration shutter, a rotary solenoid designed to be fail-safe open, remained in a closed state with no power to the electromagnetic coils. The ensuing investigation, subsequent testing, proposed remedy, and lessons learned are the focus of this paper.
Document ID
20020050184
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Schwinger, Scott
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Hakun, Claef
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Brown, Gary
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Blumenstock, Ken
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 29, 2013
Publication Date
April 1, 2002
Publication Information
Publication: Proceedings of the 36th Aerospace Mechanisms Symposium
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available