NDLI: Nanolaminate membranes as cylindrical telescope reflectors

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Nanolaminate membranes as cylindrical telescope reflectors

Content Provider	NASA Technical Reports Server (NTRS)
Author	Dooley, Jennifer Lih, Shyh-Shiu Lih Dragovan, Mark Hickey, Gregory
Copyright Year	2010
Description	A document discusses a proposal to use axially stretched metal nanolaminate membranes as lightweight parabolic cylindrical reflectors in the Dual Anamorphic Reflector Telescope (DART) - a planned spaceborne telescope in which the cylindrical reflectors would be arranged to obtain a point focus. The discussion brings together a combination of concepts reported separately in several prior NASA Tech Briefs articles, the most relevant being "Nanolaminate Mirrors With Integral Figure-Control Actuators" NPO -30221, Vol. 26, No. 5 (May 2002), page 90; and "Reflectors Made From Membranes Stretched Between Beams" NPO -30571, Vol. 33, No. 10 (October 2009), page 11a. The engineering issues receiving the greatest emphasis in the instant document are (1) the change in curvature associated with the Poisson contraction of a stretched nanolaminate reflector membrane and (2) the feasibility of using patches of poly(vinylidene fluoride) on the rear membrane surface as piezoelectric actuators to correct the surface figure for the effect of Poisson contraction and other shape errors.
File Size	258094
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20100019581
Archival Resource Key	ark:/13960/t8hf2tg03
Language	English
Publisher Date	2010-05-01
Access Restriction	Open
Subject Keyword	Man/system Technology And Life Support Nasa Programs Membranes Piezoelectric Actuators Cylindrical Bodies Spaceborne Telescopes Shapes Fluorides Mirrors Curvature Parabolic Reflectors Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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