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Surface Profile Accuracy of Deployable Mesh Reflectors Based on Focal Offset

Siddesh, SS and Harisankar, R and Ananthasuresh, GK (2022) Surface Profile Accuracy of Deployable Mesh Reflectors Based on Focal Offset. In: 4th International and 19th National Conference on Machines and Mechanism, iNaCoMM 2019, 5 - 7 December 2019, Mandi, pp. 1355-1365.

Full text not available from this repository.
Official URL: https://doi.org/10.1007/978-981-16-0550-5_129


A deployable structure based on the tension truss concept is used to develop unfurlable, large-aperture reflectors for space applications. The paraboloid surface of the reflector is approximated by a reflective mesh attached to a cable network consisting of triangular facets. Existing approaches try to minimize the root mean square error between the faceted surface and the local quadratic approximation of the paraboloid for designing the cable net. An alternate approach for computing the surface accuracy of the faceted reflector surface is proposed here based on the proximity of the reflected rays to the receiver of the antenna. The offset distance of reflected rays from the focus or offset error is a more geometrically relevant indicator for determining the accuracy of the facets. An offset paraboloid reflector of 3Â m aperture diameter is designed for which the surface errors are computed using both the approaches. These errors are computed for individual facets, and their distribution throughout the reflector surface is compared.

Item Type: Conference Paper
Publication: Lecture Notes in Mechanical Engineering
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to the Springer Science and Business Media Deutschland GmbH.
Keywords: Cable network; Faceting; Offset error; Surface accuracy
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 08 Jul 2022 06:35
Last Modified: 08 Jul 2022 06:35
URI: https://eprints.iisc.ac.in/id/eprint/74301

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