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Shutter mechanism for spacecraft spectrophotometerA shutter mechanism is described for the backscatter ultraviolet spectrophotometer experiment on the Nimbus D satellite. The purpose of the experiment is to determine spatial distribution of atmospheric ozone from measurements of ultraviolet radiation backscattered by the earth's atmosphere. The system consists of two independent, rotary cylinder shutters, controlled by a dual star Geneva mechanism, and driven by a single stepper motor. A single driver controls a combination of two independently driven Geneva stars. Design considerations involved the use of low friction, nonmetallic materials.
Document ID
19720018741
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
August Weilbach (Beckman Instruments, Inc. Fullerton, CA, United States)
Date Acquired
August 6, 2013
Publication Date
June 1, 1972
Publication Information
Publication: 6th Aerospace Mechanisms Symposium
Publisher: National Aeronautics and Space Administration
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: 6th Aerospace Mechanisms Symposium
Location: Moffett Field, CA
Country: US
Start Date: September 9, 1971
End Date: September 10, 1971
Sponsors: Ames Research Center
Accession Number
72N26391
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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