View in EDS

Shape-Reconfigurable Deployable Paraboloid Reflector Based on a 7R-8R Truss Network.

Saved in:
Bibliographic Details
Title: Shape-Reconfigurable Deployable Paraboloid Reflector Based on a 7R-8R Truss Network.
Authors: Wang, Tianshu1 (AUTHOR) tianshuw@tju.edu.cn, Gu, Yuanqing1 (AUTHOR) guyuanqing@tju.edu.cn, Chen, Yan1,2 (AUTHOR) yan_chen@tju.edu.cn
Source: Chinese Journal of Mechanical Engineering (KeAi Communications Co.). 7/17/2025, Vol. 38 Issue 1, p1-15. 15p.
Subjects: Paraboloid, Multi-objective optimization, Multi-degree of freedom, Astronautics, Trusses, Genetic algorithms
Abstract: Progressing beyond the stowage and deployment of reflectors and designing for multiple deployed states result in reflector shape reconfiguration, thus allowing for new functions including radiation pattern reconfiguration, and is valuable for space applications such as satellite-based radar and communications. This paper introduces a concept for achieving the deployment and shape reconfiguration of a paraboloid reflector using a 7R-8R (revolute joint) truss network. By realizing reconfigurability mechanically, complex electronic systems such as phased arrays can be avoided, and adopting a single-degree-of-freedom (DOF) design further reduces the number of required actuators. The proposed reflector is axisymmetric and can be doubly curved. It comprises a flexible mesh surface supported by a rigid truss network constructed from 7R and 8R linkages. Approximation of multiple target surfaces is achieved by synthesizing the truss network dimensions using a multiobjective optimization approach. The non-dominated sorting genetic algorithm is used in conjunction with analytical dimension parameterization and forward kinematics computation to determine the optimal dimensions for the truss network. In the resulting designs, the reflector follows a single-DOF trajectory, on which it unfolds from a compact stowed bundle toward a deployed state approximating a doubly curved target surface, then onwards to additional deployed states approximating different target surfaces. Design studies are conducted to demonstrate the reflector's ability to approximate different target surfaces and continuously transform between such surfaces. This study proposes a new method for reconfiguring reflector shape mechanically, thus uniquely reconfiguring the shape of a doubly curved surface and achieving both deployment and shape reconfiguration under a unified single-DOF motion. [ABSTRACT FROM AUTHOR]
Copyright of Chinese Journal of Mechanical Engineering (KeAi Communications Co.) is the property of KeAi Communications Co. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 186711834
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Shape-Reconfigurable Deployable Paraboloid Reflector Based on a 7R-8R Truss Network.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Tianshu%22">Wang, Tianshu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tianshuw@tju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Gu%2C+Yuanqing%22">Gu, Yuanqing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> guyuanqing@tju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Yan%22">Chen, Yan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> yan_chen@tju.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Chinese+Journal+of+Mechanical+Engineering+%28KeAi+Communications+Co%2E%29%22">Chinese Journal of Mechanical Engineering (KeAi Communications Co.)</searchLink>. 7/17/2025, Vol. 38 Issue 1, p1-15. 15p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Paraboloid%22">Paraboloid</searchLink><br /><searchLink fieldCode="DE" term="%22Multi-objective+optimization%22">Multi-objective optimization</searchLink><br /><searchLink fieldCode="DE" term="%22Multi-degree+of+freedom%22">Multi-degree of freedom</searchLink><br /><searchLink fieldCode="DE" term="%22Astronautics%22">Astronautics</searchLink><br /><searchLink fieldCode="DE" term="%22Trusses%22">Trusses</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+algorithms%22">Genetic algorithms</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Progressing beyond the stowage and deployment of reflectors and designing for multiple deployed states result in reflector shape reconfiguration, thus allowing for new functions including radiation pattern reconfiguration, and is valuable for space applications such as satellite-based radar and communications. This paper introduces a concept for achieving the deployment and shape reconfiguration of a paraboloid reflector using a 7R-8R (revolute joint) truss network. By realizing reconfigurability mechanically, complex electronic systems such as phased arrays can be avoided, and adopting a single-degree-of-freedom (DOF) design further reduces the number of required actuators. The proposed reflector is axisymmetric and can be doubly curved. It comprises a flexible mesh surface supported by a rigid truss network constructed from 7R and 8R linkages. Approximation of multiple target surfaces is achieved by synthesizing the truss network dimensions using a multiobjective optimization approach. The non-dominated sorting genetic algorithm is used in conjunction with analytical dimension parameterization and forward kinematics computation to determine the optimal dimensions for the truss network. In the resulting designs, the reflector follows a single-DOF trajectory, on which it unfolds from a compact stowed bundle toward a deployed state approximating a doubly curved target surface, then onwards to additional deployed states approximating different target surfaces. Design studies are conducted to demonstrate the reflector's ability to approximate different target surfaces and continuously transform between such surfaces. This study proposes a new method for reconfiguring reflector shape mechanically, thus uniquely reconfiguring the shape of a doubly curved surface and achieving both deployment and shape reconfiguration under a unified single-DOF motion. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chinese Journal of Mechanical Engineering (KeAi Communications Co.) is the property of KeAi Communications Co. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=186711834
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1186/s10033-025-01302-x
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Paraboloid
        Type: general
      – SubjectFull: Multi-objective optimization
        Type: general
      – SubjectFull: Multi-degree of freedom
        Type: general
      – SubjectFull: Astronautics
        Type: general
      – SubjectFull: Trusses
        Type: general
      – SubjectFull: Genetic algorithms
        Type: general
    Titles:
      – TitleFull: Shape-Reconfigurable Deployable Paraboloid Reflector Based on a 7R-8R Truss Network.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Wang, Tianshu
      – PersonEntity:
          Name:
            NameFull: Gu, Yuanqing
      – PersonEntity:
          Name:
            NameFull: Chen, Yan
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 17
              M: 07
              Text: 7/17/2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 10009345
          Numbering:
            – Type: volume
              Value: 38
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Chinese Journal of Mechanical Engineering (KeAi Communications Co.)
              Type: main
ResultId 1