The prospects for applying magnetic smart materials combined with shape memory alloys to produce correctable and deployable space telescopes

Melville P. Ulmer; Mohammadreza Jalilvand; Nicholas A. Marks; D. B. Buchholz; Brooke Fujishima; Nicolas Guerra; Jian Cao; Y- W. Chung; T. B. Baturalp; V. L. Coverstone; S. P. Stagon; Giovanni De Vita; Jeffrey H. Dugard; Raj Vaidyanathan

doi:10.1117/12.2564726

16 December 2020 The prospects for applying magnetic smart materials combined with shape memory alloys to produce correctable and deployable space telescopes

Melville P. Ulmer, Mohammadreza Jalilvand, Nicholas A. Marks, D. B. Buchholz, Brooke Fujishima, Nicolas Guerra, Jian Cao, Y- W. Chung, T. B. Baturalp, V. L. Coverstone, S. P. Stagon, Giovanni De Vita, Jeffrey H. Dugard, Raj Vaidyanathan

Author Affiliations +

Proceedings Volume 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV; 114511X (2020) https://doi.org/10.1117/12.2564726
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The desirability of making deployable mirrors for space telescopes has been known for years. Yet, once the wave lengths are longer than the short wave radio, progress has been slow. Therefore, we are exploring a new technology based on using a magnetic smart material film deposited on a shape-memory alloy (SMA) sheet. Our preliminary result is that when we apply an about 0.1-0.35 T in-plane magnetic field, we can produce greater than micron deflections in the SMA. Furthermore, we have shown the SMA can return to shape to within 1 micron. We will present an update on how long these deflections can be maintained and our progress toward making the SMA surface smooth enough to produce specular reflection. In addition, we assess the brightness and shininess of the NiTi piece before and after heating that is needed to produce a return to shape.

Conference Presentation

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Melville P. Ulmer, Mohammadreza Jalilvand, Nicholas A. Marks, D. B. Buchholz, Brooke Fujishima, Nicolas Guerra, Jian Cao, Y- W. Chung, T. B. Baturalp, V. L. Coverstone, S. P. Stagon, Giovanni De Vita, Jeffrey H. Dugard, and Raj Vaidyanathan "The prospects for applying magnetic smart materials combined with shape memory alloys to produce correctable and deployable space telescopes", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114511X (16 December 2020); https://doi.org/10.1117/12.2564726

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