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Interdisciplinary design analysis of a precision spacecraft antennaThe Advanced Communications Technology Satellite (ACTS) will operate in the 20/30 GHz range (Ka Band), and will include a multi-beam antenna (MBA) capable of 0.3 degree scanning spot beams with very high beam-to-beam isolation. The antenna Radio Frequency (RF) performance requirements lead to stringent requirements on the antenna reflector surface shape. A prediction of RF performance of a potential flight model antenna reflector operating under space environmental conditions is made using a radiant heat input model (TRASYS), a thermal analyzer (SINDA), a structural model (NASTRAN), and RF far field pattern simulation. Interfacing software has been written to pass thermal model temperature results to the structural model, and structural model thermal deformation results to the RF far field pattern simulation. A complete analysis can be performed in a single computer run, and potential changes in design can be quickly and easily evaluated using this interdisciplinary design analysis tool.
Document ID
19850048152
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Steinbach, R. E.
(Analex Corp. Cleveland, OH, United States)
Winegar, S. R.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 85-0804
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference
Location: Orlando, FL
Start Date: April 15, 1985
End Date: April 17, 1985
Accession Number
85A30303
Distribution Limits
Public
Copyright
Other

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