From design to evaluation of an additively manufactured, lightweight, deployable mirror for Earth observation
From design to evaluation of an additively manufactured, lightweight, deployable mirror for Earth observation
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用于地球观测的增材制造、轻型、可展开镜子的从设计到评估
DOI:
10.1117/12.2677303
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Westsik M
中科院分区:
文献类型:
--
作者:
Westsik M
Additive manufacturing (AM; 3D Printing) is a process that fabricates objects layer-by-layer, unlocking previously unachievable geometrical freedom in design and manufacture. Its adoption for the manufacture of optical components for nanosats is challenging due to limited understanding of its inherent porosity and outgassing properties; however, AM has plenty of potential for lightweight space-based mirror structures as it enables the use of lattice structures and topology optimisation. AM is particularly relevant to nanosat deployable optics (DO) instrumentation, where a segmented mirror needs to be packed within a limited volume and mass budget. This paper describes the design, analysis, manufacture and metrology of AM mirror petal prototypes for a 6U nanosat DO payload. The objective of the prototypes was to reduce the mass and the part count relative to the conventional design. From the available 33 volumetric lattices including graph, triply periodic minimal surface and stochastic lattices within the AM design software used, two were downselected by using finite element analysis and manufacturability experiments. Prototypes were designed using these lattices, and the geometric and interface requirements of the conventional petal. These were printed, using laser powder bed fusion, in the aluminium alloy AlSi10Mg and post-processed using single point diamond turning. The internal (porosity) and external geometrical properties of the manufactured prototypes were measured using X-ray computed tomography and the optical properties of the reflective surface evaluated using interferometry. By utilising AM, a mass reduction of 44 % and the consolidation of nine parts into one was achieved.
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DOI:
10.1117/12.2627244
发表时间:
2022-08
期刊:
--
影响因子:
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作者:
C. Atkins;L. van de Vorst;Andrew Conley;Szigfrid Farkas;E. Hugot;G. Mező;K. Morris;M. Roulet;Robert Snell;F. Tenegi-Sanginés;I. Todd;A. Vega-Moreno;H. Schnetler
通讯作者:
C. Atkins;L. van de Vorst;Andrew Conley;Szigfrid Farkas;E. Hugot;G. Mező;K. Morris;M. Roulet;Robert Snell;F. Tenegi-Sanginés;I. Todd;A. Vega-Moreno;H. Schnetler
DOI:
--
发表时间:
2022
期刊:
Astronomical Telescopes + Instrumentation
影响因子:
--
作者:
N. Schwartz;W. Brzozowski;Z. Ali;M. Milanova;K. Morris;C. Bond;Jennifer Keogh;Douglas Harvey;Lawrence Bissell;J. Sauvage;M. Dumont;C. Correia;Phil Rees;H. Bruce
通讯作者:
H. Bruce
DOI:
10.1117/12.2627757
发表时间:
2022
期刊:
--
影响因子:
--
作者:
Paenoi J
通讯作者:
Paenoi J
DOI:
10.1117/12.2627331
发表时间:
2022
期刊:
--
影响因子:
--
作者:
Breen C
通讯作者:
Breen C
DOI:
10.1117/12.2629935
发表时间:
2022
期刊:
--
影响因子:
--
作者:
Snell R
通讯作者:
Snell R