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Preliminary experimental test results using 35 GHz offset fed reflector simulating surface pillows and aperture cablesThe effects caused by reflector surface pillows and aperture cables on RF performance were determined. The test uses models that were designed to be replicas of a quad aperture at the proper F/D = 1.50 as provided in the LSST point design. Separate pillow models were machined from solid aluminum sections that simulated the surface contour pillows but on an exaggerated basis. The worse case pillow heights lamda/20 and lamda/5 were machined onto the precision reflector. In addition to the pillow effects, the scattering effects of aperture (Hoop/Column cables) cables were determined. Therefore, simulated quartz and graphite cables were tested with the smooth, lamda/20, and lamda/5 reflector models.
Document ID
19820011391
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Campbell, T. G.
(NASA Langley Research Center Hampton, VA, United States)
Young, W. R.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: Large Space Systms Technol., Pt. 2, 1981
Subject Category
Launch Vehicles And Space Vehicles
Accession Number
82N19265
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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