| タイトル | Hybrid Electrostatic/Flextensional Mirror for Lightweight, Large-Aperture, and Cryogenic Space Telescopes |
| 本文（外部サイト） | http://hdl.handle.net/2060/20130009454 |
| 著者（英） | Patrick, Brian; Jiang, Xiaoning; Hackenberger, Wesley; Moore, James |
| 著者所属（英） | ManTech NeXolve Corp. |
| 発行日 | 2013-01-01 |
| 言語 | eng |
| 内容記述 | A lightweight, cryogenically capable, scalable, deformable mirror has been developed for space telescopes. This innovation makes use of polymer-based membrane mirror technology to enable large-aperture mirrors that can be easily launched and deployed. The key component of this innovation is a lightweight, large-stroke, cryogenic actuator array that combines the high degree of mirror figure control needed with a large actuator influence function. The latter aspect of the innovation allows membrane mirror figure correction with a relatively low actuator density, preserving the lightweight attributes of the system. The principal components of this technology are lightweight, low-profile, high-stroke, cryogenic-capable piezoelectric actuators based on PMN-PT (piezoelectric lead magnesium niobate-lead titanate) single-crystal configured in a flextensional actuator format; high-quality, low-thermal-expansion polymer membrane mirror materials developed by NeXolve; and electrostatic coupling between the membrane mirror and the piezoelectric actuator assembly to minimize problems such as actuator print-through. |
| NASA分類 | Optics |
| レポートNO | MFS-32878-1 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
|
