Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors

In the design of a large deployable mesh reflector, high surface accuracy is one of ultimate goals since it directly determines overall performance of the reflector. Therefore, evaluation of surface accuracy is needed in many cases of design and analysis of large deployable mesh reflectors. The surf...

Full description

Saved in:
Bibliographic Details
Main Author: Sichen Yuan
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:International Journal of Aerospace Engineering
Online Access:http://dx.doi.org/10.1155/2022/5352146
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832549215301009408
author Sichen Yuan
author_facet Sichen Yuan
author_sort Sichen Yuan
collection DOAJ
description In the design of a large deployable mesh reflector, high surface accuracy is one of ultimate goals since it directly determines overall performance of the reflector. Therefore, evaluation of surface accuracy is needed in many cases of design and analysis of large deployable mesh reflectors. The surface accuracy is usually specified as root-mean-square error, which measures deviation of a mesh geometry from a desired working surface. In this paper, methods of root-mean-square error calculation for large deployable mesh reflectors are reviewed. Concept of reflector gain, which describes reflector performance, and its relationship with the root-mean-square error is presented. Approaches to prediction or estimation of root-mean-square error in preliminary design of a large deployable mesh reflector are shown. Three methods of root-mean-square error calculation for large deployable mesh reflectors, namely, the nodal deviation root-mean-square error, the best-fit surface root-mean-square error, and the direct root-mean-square error, are presented. Concept of effective region is introduced. An adjusted calculation of root-mean-square error is suggested when the concept of effective region is involved. Finally, these reviewed methods of root-mean-square error calculation are applied to surface accuracy evaluation of a two-facet mesh geometry, a center-feed mesh reflector, and an offset-feed mesh reflector for demonstration and comparison.
format Article
id doaj-art-13e58b3819c844429403717bfac77753
institution Kabale University
issn 1687-5974
language English
publishDate 2022-01-01
publisher Wiley
record_format Article
series International Journal of Aerospace Engineering
spelling doaj-art-13e58b3819c844429403717bfac777532025-02-03T06:11:50ZengWileyInternational Journal of Aerospace Engineering1687-59742022-01-01202210.1155/2022/5352146Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh ReflectorsSichen Yuan0A. Leon Linton Department of MechanicalIn the design of a large deployable mesh reflector, high surface accuracy is one of ultimate goals since it directly determines overall performance of the reflector. Therefore, evaluation of surface accuracy is needed in many cases of design and analysis of large deployable mesh reflectors. The surface accuracy is usually specified as root-mean-square error, which measures deviation of a mesh geometry from a desired working surface. In this paper, methods of root-mean-square error calculation for large deployable mesh reflectors are reviewed. Concept of reflector gain, which describes reflector performance, and its relationship with the root-mean-square error is presented. Approaches to prediction or estimation of root-mean-square error in preliminary design of a large deployable mesh reflector are shown. Three methods of root-mean-square error calculation for large deployable mesh reflectors, namely, the nodal deviation root-mean-square error, the best-fit surface root-mean-square error, and the direct root-mean-square error, are presented. Concept of effective region is introduced. An adjusted calculation of root-mean-square error is suggested when the concept of effective region is involved. Finally, these reviewed methods of root-mean-square error calculation are applied to surface accuracy evaluation of a two-facet mesh geometry, a center-feed mesh reflector, and an offset-feed mesh reflector for demonstration and comparison.http://dx.doi.org/10.1155/2022/5352146
spellingShingle Sichen Yuan
Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors
International Journal of Aerospace Engineering
title Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors
title_full Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors
title_fullStr Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors
title_full_unstemmed Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors
title_short Review of Root-Mean-Square Error Calculation Methods for Large Deployable Mesh Reflectors
title_sort review of root mean square error calculation methods for large deployable mesh reflectors
url http://dx.doi.org/10.1155/2022/5352146
work_keys_str_mv AT sichenyuan reviewofrootmeansquareerrorcalculationmethodsforlargedeployablemeshreflectors