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Proceedings Paper

High-Bandwidth Lightweight Primary Mirror Concept Demonstration
Author(s): S. Johnson; T. Farrell; C. Neufeld
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Paper Abstract

A unique approach to achieving high temporal bandwidth control of large active primary mirrors has been conceived and demonstrated experimentally. This high speed control is accomplished via implementation of a lightweight, reactionless facesheet that overcomes the typical mechanical resonance limitations on bandwidth for large primary mirror assemblies. Laboratory testing of a reactionless facesheet breadboard has: . Validated the reactionless principles of self-canceling symmetry of mass motion and stiffness forces . Confirmed the localized influence function of the inherently stiff high density, piezoelectric actuators used to control the mirror surface figure . Confirmed the feasibility of achieving high bandwidth control of large primary mirrors. This paper describes the design, test methods, and results of a concept demonstration and compares test data and predicted response.

Paper Details

Date Published: 6 October 1987
PDF: 12 pages
Proc. SPIE 0779, Electromechanical System Interaction with Optical Design, (6 October 1987); doi: 10.1117/12.940478
Show Author Affiliations
S. Johnson, Perkin-Elmer Corporation (United States)
T. Farrell, Perkin-Elmer Corporation (United States)
C. Neufeld, Perkin-Elmer Corporation (United States)

Published in SPIE Proceedings Vol. 0779:
Electromechanical System Interaction with Optical Design
Sankaran Gowrinathan, Editor(s)

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