Title:
A Feasibility Study of Thin-Shell Deformable Mirrors with Adaptive Truss Support for Spaced-Based Telescopes

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dc.contributor.advisor Lipkin, Harvey
dc.contributor.author Marzette, Russell K., Jr. en_US
dc.contributor.committeeMember Ume, I. Charles
dc.contributor.committeeMember Sitaraman, Suresh K.
dc.contributor.department Mechanical Engineering en_US
dc.date.accessioned 2007-08-16T17:49:49Z
dc.date.available 2007-08-16T17:49:49Z
dc.date.issued 2006-07-19 en_US
dc.description.abstract Space-based telescopes are limit by the payload requirements of existing launch vehicles. Thus, despite distinct advantages the resolution of terrestrial telescopes exceeds space-based telescopes due to larger size and powerful adaptive optics. To overcome payload limitations, a primary mirror technology that is lighter in weight, but no less effective, is required. As this will result in new structural conditions, new approaches to maintaining the optical shape (figure) of the mirror will also be required. This thesis culminates work at the Georgia Institute of Technology in modelling a hexagonal thin-shell deformation mirror manipulated by an adaptive truss. This research specifically examines the feasibility of a surface parallel actuated (SPA) thin-shell CuZr deformable mirror (DM) as an alternative to a typical surface normal actuated (SNA) based mirror. It is believed that by using a thin-shell mirror (100 m or less in thickness) with a light weight substrate, such as a truss, that a significant weight-savings will occur, thus enabling larger space based telescopes. This thesis advances the SPA DM concept by 1) creating a representative model, 2) developing design evaluation methods, 3) evaluating the FEA simulated response of the deformable mirror over Zernike error modes, 4) evaluating the FEA simulated response to select thermal loads, and 5) evaluating the ability of the DM to remove thermal error, and the forces required to do so. Finally, it is concluded that overall the SPA DM concept is feasible. en_US
dc.description.degree M.S. en_US
dc.identifier.uri http://hdl.handle.net/1853/16214
dc.publisher Georgia Institute of Technology en_US
dc.subject Thermal gradient en_US
dc.subject Truss en_US
dc.subject Substrate en_US
dc.subject Facesheet en_US
dc.subject Space en_US
dc.subject Space-based en_US
dc.subject Active optics en_US
dc.subject JPL en_US
dc.subject Xinetics en_US
dc.subject University of Florida en_US
dc.subject NRO en_US
dc.subject Georgia Tech en_US
dc.subject Mirror en_US
dc.subject Lightweight en_US
dc.subject Surface parallel actuator en_US
dc.subject Surface normal actuation en_US
dc.subject Thin-shell en_US
dc.subject Adaptive optics en_US
dc.subject Deformable mirrors en_US
dc.title A Feasibility Study of Thin-Shell Deformable Mirrors with Adaptive Truss Support for Spaced-Based Telescopes en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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