APERTURE, a precise extremely-large reflective telescope using re-configurable element: A progress report

R. Coppejans*, M. P. Ulmer, D. B. Buchholz, X. Wang, J. Cao, V. L. Coverstone, T. B. Baturalp, K. S. Condron, A. E. O'Donnell, B. E. Harpt, W. H. Reinhardt, M. E. Johnson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

One of the pressing needs for the UV-Vis is an affordable design that allows larger mirrors than the JWST primary. In this publication we report the results of the first year of a NASA Innovative Advanced Concepts Phase II study. Our project is called A Precise Extremely large Reflective Telescope Using Reconfigurable Elements (APERTURE). The concept is to deploy a continuous membrane-like mirror. The mirror figure will be corrected after deployment, causing the figure error to decrease below λ/20. While the basic concept is not new, our innovation lies in a different approach to correcting the residual figure errors from the classical piezoelectricpatch technology. Instead, our concept is based on a contiguous coating of a magnetic smart material (MSM). After deployment, a magnetic write head will move along the non-reflecting side of the mirror. The magnetic field will produce a stress in the MSM which then corrects the mirror shape. This publication summarizes the results of minimizing the MSM deposition stress as well as the size and stability of the deformation, which is maintained by a magnetically hard material.

Original languageEnglish (US)
Title of host publicationUV/Optical/IR Space Telescopes and Instruments
Subtitle of host publicationInnovative Technologies and Concepts VIII
EditorsHoward A. MacEwen, James B. Breckinridge, James B. Breckinridge
PublisherSPIE
ISBN (Electronic)9781510612532
DOIs
StatePublished - Jan 1 2017
EventUV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII 2017 - San Diego, United States
Duration: Aug 6 2017Aug 7 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10398
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherUV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII 2017
CountryUnited States
CitySan Diego
Period8/6/178/7/17

Keywords

  • Deformable
  • Deployable
  • Magnetic Smart Materials
  • Magnetostriction
  • Membrane
  • Space Mirrors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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