Field Guide to Optomechanical Design and Analysis

Schwertz, Katie; Burge, Jim

doi:10.1117/3.934930

Cited by 25 publications

(19 citation statements)

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“…The PSD is an amount of the amplitude of vibration controlled within specific bandwidth, typically 1 Hz. PSD is an area under a curve and represented in units of area bandwidth [4], [5], [8]. The fundamental frequency can be measured by stiffness-to-weight ratio of the structure.…”

Section: A Materials Selectionmentioning

confidence: 99%

Mechanical Design and Analysis of Detector Head Assembly for Space bone High-Resolution Imaging Sensor

Patel,

Shah*

2020

IJITEE

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The imaging sensors employed in satellites are subjected to a wide range of vibratory loads induced during the launching phase. The effect of temperature change also needs to be looked upon while designing the structure of the imaging sensor as satellite passes through the solar and lunar phase. This project work goes into depth of challenges incurred during launching and in-orbit operation. The research includes development of lightweight structure, incorporating flexure interface to house detector head assembly (DHA) components. The design of flexural mount is a novel approach that not only arrests the deformation of the imaging sensor but also restricts structural stresses to affect the performance of the imaging sensor. This article showcases the assessment of three different mechanical designs of DHA through finite element simulation results computed in ANSYS workbench environment. The survivability of DHA structure has been checked under 55g quasi-static loading to simulate launch vibration along with 10°C thermal gradient corresponded to the in-service orbital motion. In this research work, AL6061-T6 and Kovar has been chosen for various design components of the DHA as they are space qualified materials. Though both material options showed similar performance, due to low density, ready availability and cost effectiveness leads to select Al6061-T6 material for the fabrication of DHA components.

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Section: A Materials Selectionmentioning

confidence: 99%

Mechanical Design and Analysis of Detector Head Assembly for Space bone High-Resolution Imaging Sensor

Patel,

Shah*

2020

IJITEE

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“…The aluminium + NiP sample was expected to demonstrate the best surface quality of the set, NiP is often used in optics fabrication and a surface roughness <1 nm rms is possible. 10 In addition, OSL has several years experience polishing the aluminium + NiP combination to a high surface quality, including in the X-ray domain. 11 One advantage of coating in NiP, or Ni, is that it removes any concern of the porosity within the printed substrate.…”

Section: Sample Polishing -Overviewmentioning

confidence: 99%

Additive manufactured x-ray optics for astronomy

Atkins

Feldman

Watson

et al. 2017

Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII

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Additive manufacturing, more commonly known as 3D printing, has become a commercially established technology for rapid prototyping and the fabrication of bespoke intricate parts. Optical components, such as mirrors and lenses, are now being fabricated via additive manufacturing, where the printed substrate is polished in a post-processing step. One application of additively manufactured optics could be within the astronomical X-ray community, where there is a growing need to demonstrate thin, lightweight, high precision optics for a beyond Chandra style mission. This paper will follow a proof-of-concept investigation, sponsored by the UK Space Agency's National Space Technology Programme, into the feasibility of applying additive manufacturing in the production of thin, lightweight, precision X-ray optics for astronomy. One of the benefits of additive manufacturing is the ability to construct intricate lightweighting, which can be optimised to minimise weight while ensuring rigidity. This concept of optimised lightweighting will be applied to a series of polished additively manufactured test samples and experimental data from these samples, including an assessment of the optical quality and the magnitude of any print-through, will be presented. In addition, the finite element analysis optimisations of the lightweighting development will be discussed.

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“…9 Most often, the open back mirrors are easier to fabricate than their sandwich mirror counterparts, but with an open structure at the back they are less rigid and more prone to distortion. 10 Potentially this compromise in mirror performance can be counteracted using AM, where a sandwich mirror can be printed directly, rather than constructed as a composite. In addition, regular pocketed mass removal patterns used in open-back mirrors can be optimised for the anticipated loads or mounting fixtures, the resultant optimised pockets would potentially be irregular, posing a challenge for traditional machining methods (mill, drill and lathe).…”

Section: Introductionmentioning

confidence: 99%