Design, fabrication and testing of composite sandwich integral structure of spacecraft antenna

Design, fabrication and testing of composite sandwich integral structure of spacecraft antenna An innovative design of the space offset mirror antenna made of composite material is presented in the paper. The antenna body is designed in the form of a composite sandwich conical shell with a cutout made on the side surface. The body geometry is selected to conform to and accommodate the signal transmitting zone. The antenna reflector is located at the bottom part of the sandwich cone and the feed is placed at the top creating a compact antenna configuration. A full-size prototype of the antenna has been designed, built and tested. Design parameters of the sandwich structure have been determined based on the results of finite-element modal analysis. The experimental results of vibration and thermal cycling testing of the prototype provide a proof of concept and evidence of the design feasibility. It is shown that the stiffness characteristics of the proposed integral sandwich antenna ensure efficient applications of such composite structures in the space antennas designed for various ranges of radio wave transmission. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Composite Structures Elsevier

Design, fabrication and testing of composite sandwich integral structure of spacecraft antenna

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0263-8223
eISSN
1879-1085
D.O.I.
10.1016/j.compstruct.2015.08.124
Publisher site
See Article on Publisher Site

Abstract

An innovative design of the space offset mirror antenna made of composite material is presented in the paper. The antenna body is designed in the form of a composite sandwich conical shell with a cutout made on the side surface. The body geometry is selected to conform to and accommodate the signal transmitting zone. The antenna reflector is located at the bottom part of the sandwich cone and the feed is placed at the top creating a compact antenna configuration. A full-size prototype of the antenna has been designed, built and tested. Design parameters of the sandwich structure have been determined based on the results of finite-element modal analysis. The experimental results of vibration and thermal cycling testing of the prototype provide a proof of concept and evidence of the design feasibility. It is shown that the stiffness characteristics of the proposed integral sandwich antenna ensure efficient applications of such composite structures in the space antennas designed for various ranges of radio wave transmission.

Journal

Composite StructuresElsevier

Published: Dec 15, 2015

References

  • Design of load-bearing antenna structures by embedding technology of microstrip antenna in composite sandwich structure
    You, C.S.; Hwang, W.

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