{"product_id":"lightweight-tn-plane-actuated-deformable-mirrors-for-space-telescopes-1288332637","title":"Lightweight tn-Plane Actuated Deformable Mirrors for Space Telescopes","description":"\u003cp\u003e\u003cstrong\u003eISBN:\u003c\/strong\u003e 1288332637\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAuthor:\u003c\/strong\u003e Shepherd, Michael J\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/p\u003e\u003cp\u003eThis research focused on lightweight, in-plane actuated, deformable mirrors, with the ultimate goal of developing a 20-meter light gathering aperture for space telescopes. The 0.127 meter diameter deformable mirror small scale testbed was modelled in finite elements using MSC. Nastran software and then used as a basis for a quasi-static controller. Experi- mental tracking of Zernike tip, tilt, and defocus modes was accomplished. The analytical solutions to plate-membrane and beam-string ordinary differential equations were developed. A simplified approach to modelling the axisymmetric cases was also presented. A novel static control strategy, the Modal Transformation Method, was developed to form Zernike surfaces within an interior, or clear aperture, region using a number of statically-actuated Bessel-based vibration modes. The scaling problem for membrane optics is addressed. Significantly, it is shown linear modelling may correctly explain the behavior of small-scale models, but only non-linear models will account for the important terms which govern the full-scale large aperture membrane telescopes.\u003c\/p\u003e","brand":"Mia Karts","offers":[{"title":"Default Title","offer_id":51968882114848,"sku":"NEW1288332637","price":25.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/7426\/3840\/files\/71xKgPDGR7L.jpg?v=1783716572","url":"https:\/\/miakarts.com\/products\/lightweight-tn-plane-actuated-deformable-mirrors-for-space-telescopes-1288332637","provider":"Miakarts Books","version":"1.0","type":"link"}