An additive manufactured CubeSat mirror incorporating a novel circular lattice

Snell, Robert M.; Atkins, Carolyn; Schnetler, Hermine; Todd, Iain; Hernández-Nava, Everth; Lyle, A.R.; Maddison, George; Morris, Katherine C.; Miller, Christopher J.; Roulet, Melanie; Hugot, Emmanuel; Sanginés, Fabio Tenegi; Vega-Moreno, A.; Vorst, L. T. G. van de; Dufils, Joris; Brouwers, Leon; Farkas, Szigfrid; Mező, György; Beardsley, Mat; Harris, Michael

doi:10.1117/12.2562738

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…The pores are large, so the sample's surface roughness did not meet the requirements. This experiment demonstrated the feasibility and practicality of the lattice structures in metal mirrors and laid the foundation for future iterative experiments [65,66]. The team performed a set of comparative experiments with six technical routes, as shown in Figure 25.…”

Section: Uniform Latticementioning

confidence: 89%

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Design and Fabrication Technology of Metal Mirrors Based on Additive Manufacturing: A Review

et al. 2021

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In recent years, much progress has been made on the development of metal mirrors based on additive manufacturing (AM). The sandwich mirror is well known for its excellent mechanical properties and challenging machining. Now, AM can be used to fabricate this complex structure and reduce the processing time and cost. In addition, with the aid of some new design methods for additive manufacturing, such as lattice, topology optimization (TO), and Voronoi, the freedom of mirror structure design is enormously improved. The common materials of mirrors include ceramics (SiC), glasses (glass ceramics, fused silica), and metals (aluminum, beryllium). Among them, the AM technology of metals is the most mature and widely used. Researchers have recently extensively developed the new-generation metal mirror to improve performance and lightweight rate. This review focuses on the following topics: (1) AM technologies and powder materials for metal mirrors, (2) recent advances in optomechanical design methods for AM metal mirrors, (3) challenges faced by AM metal mirrors in fabricating, and (4) future trends in AM metal mirrors.

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Section: Uniform Latticementioning

confidence: 89%

“…However, this is not the final product of the project. The team is carrying out the third and fourth iterations to seek the relatively optimal structure and explore a technical route for fabricating metal mirrors with lattice structures [65][66][67].…”

Section: Non-uniform Latticementioning

confidence: 99%

Design and Fabrication Technology of Metal Mirrors Based on Additive Manufacturing: A Review

et al. 2021

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“…The main concept behind these lattices builds on previous work by Snell et al 2 and Atkins et al 17 The unit cell in these designs is not a fixed shape. It it is design to tessellate and fit exactly within the area of the mirror.…”

Section: Lattice Conceptsmentioning

confidence: 99%

Towards understanding and eliminating defects in additively manufactured CubeSat mirrors

Snell

Atkins

Schnetler

et al. 2022

Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V

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Fabricating mirrors using additive manufacturing (AM; 3D printing) is a promising yet under-researched production route. There are several issues that need to be better understood before AM can be fully adopted to fabricate mirror substrates. A significant obstacle to AM adoption is the presence of porosity and the influence that has on the resultant optical proprieties. Several batches of high-silicon aluminium (AlSi10Mg) samples were created to investigate the relationships laser parameters, laser paths and build orientations have with the porosity. The results showed that eliminating defects relies on a complex interaction of the process parameters and material properties, with the residual heating from the laser proving to be a significant factor. In addition, the use of a hot isostatic press is investigated and some full prototypes of the Cassegrain CubeSat were produced.

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“…Hartung et al designed and manufactured the Voronoi AM mirror for visible-light level application [ 18 ]. Robert et al presented and incorporated the circular lattice into the mirror for a CubeSat telescope [ 19 ]. Yan et al designed an assembly-level topology optimization of Al mirrors based on AM, which improved the efficiency of assembly and integration [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of an Additively Manufactured Aluminum Mirror with Compound Surfaces

et al. 2022

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Microsatellites have a great attraction to researchers due to their high reliability, resource utilization, low cost, and compact size. As the core component of the optical payload, the mirror directly affects the system package size. Therefore, the structural design of mirrors is critical in the compact internal space of microsatellites. This study proposes a closed-back mirror with composite surfaces based on additive manufacturing (AM). Compared with the open-back mirror, it provides excellent optomechanical performance. In addition, AM significantly reduces the intricate mechanical parts’ manufacturing difficulty. Finally, the roughness was better than 2 nm. The surface shape of the AM aluminum mirror reached RMS 1/10λ (λ = 632.8 nm) with the aid of ultra-precision machining technologies such as single-point diamond turning (SPDT), surface modification, and polishing, and the maximum deviation of the surface shape was about RMS 1/42λ (λ = 632.8 nm) after the thermal cycle test, which verified the optical grade application of AM.

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An additive manufactured CubeSat mirror incorporating a novel circular lattice

Abstract: This is a copy of the published version, or version of record, available on the publisher's website. This version does not track changes, errata, or withdrawals on the publisher's site.

Cited by 7 publications

References 18 publications

Design and Fabrication Technology of Metal Mirrors Based on Additive Manufacturing: A Review

Design and Fabrication Technology of Metal Mirrors Based on Additive Manufacturing: A Review

Towards understanding and eliminating defects in additively manufactured CubeSat mirrors

Design and Fabrication of an Additively Manufactured Aluminum Mirror with Compound Surfaces

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