Dr. Arthur L. Palisoc Profile

Dr. Arthur L. Palisoc

at L'Garde Inc

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 27 August 2022 Presentation + Paper

Orbiting astronomical satellite for investigating stellar systems (OASIS): a paradigm shift in realizing large space telescopes

Siddhartha Sirsi, Christopher Walker, Jonathan Arenberg, Yuzuru Takashima, Daewook Kim, Heejoo Choi, Arthur Palisoc, Henry Quach, Marcos Esparza, Kevin Derby, Luke Mayer, Tianyao Zhang, Aman Chandra, Anthony Stark

Proceedings Volume 12180, 121801Q (2022) https://doi.org/10.1117/12.2629100

KEYWORDS: Space telescopes, Receivers, Astronomy, Optical design, Satellites, Mirrors, Cryogenics, Space operations, Metrology, LIDAR

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SPIE Journal Paper | 16 August 2022 Open Access

Optical design of the Orbiting Astronomical Satellite for Investigating Stellar Systems

Siddhartha Sirsi, Yuzuru Takashima, Arthur Palisoc, Heejoo Choi, Jonathan Arenberg, Daewook Kim, Christopher Walker

JATIS, Vol. 8, Issue 03, 034002, (August 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.3.034002

KEYWORDS: Mirrors, Optical design, Astronomy, Satellites, Reflectors, Receivers, Telescopes, Monochromatic aberrations, Space telescopes, Wavefronts

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Proceedings Article | 29 March 2022 Presentation + Paper

Environmental challenges to OASIS’s primary reflector

Jonathan Arenberg, Micahaela Villareal, George Harpole, Dan McGregor, Ariane Walker-Horne, John Pohner, Kevin Moore, Alex Clithero, Lauren Halvonik Harris, Tom Meyer, Art Palisoc

Proceedings Volume 11820, 118200T (2022) https://doi.org/10.1117/12.2594706

KEYWORDS: Particles, Solar processes, Space operations, Reflectors, Sun, Data modeling, Telescopes, James Webb Space Telescope, Tolerancing, Solar radiation

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Proceedings Article | 1 September 2021 Open Access

Mid-to-high frequency characterization of inflatable membrane optics

Heejoo Choi, Art Palisoc, Amarjiit Vikkas, Marcos Esparza, Joel Berkson, Yuzuru Takashima, Daewook Kim, Christopher Walker

Proceedings Volume 11820, 118200V (2021) https://doi.org/10.1117/12.2594412

KEYWORDS: Deflectometry, Optical testing, Optical fabrication, Interferometers, Spatial frequencies, Metrology, Mirrors, Telescopes

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Proceedings Article | 24 August 2021 Open Access

Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna

Henry Quach, Marcos Esparza, Hyukmo Kang, Aman Chandra, Heejoo Choi, Joel Berkson, Karlene Karrfalt, Siddhartha Sirsi, Yuzuru Takashima, Art Palisoc, Jonathan Arenberg, Kristy Gogick Marshall, Christopher Glynn, Sean Godinez, Marcos Tafoya, Christopher Walker, Christian Drouet d'Aubigny, Daewook Kim

Proceedings Volume 11820, 118200W (2021) https://doi.org/10.1117/12.2594902

KEYWORDS: Deflectometry, Calibration, Cameras, Antennas, Metrology

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Proceedings Article | 24 August 2021 Open Access

Analytical and finite element analysis tool for nonlinear membrane antenna modeling for astronomical applications

Arthur Palisoc, Gerard Pardoen, Yuzuru Takashima, Aman Chandra, Siddharta Sirsi, Heejoo Choi, Daewook Kim, Henry Quach, Jonathan Arenberg, Christopher Walker

Proceedings Volume 11820, 118200U (2021) https://doi.org/10.1117/12.2594050

KEYWORDS: Reflectors, Finite element methods, James Webb Space Telescope, Telescopes, Mirrors, Antennas, Inverse problems

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The uninflated shape configurations of parabolic and spherical membrane mirrors were calculated by solving the inverse problem, i.e., given the design inflation pressure, the membrane material and geometric properties, what must be the initial uninflated shape such that on inflation to the design pressure, the exact desired surface of revolution is obtained. The resulting first order nonlinear differential equation was numerically integrated using the boundary conditions. The initial uninflated shape was then subjected to a forward transformation using FAIM, a proprietary geometric nonlinear membrane finite element code. FAIM has been validated against exact analytical solutions for both small and extremely large deformations that are up to eight orders of magnitude larger compared with the starting undeflected shape. Simulations reveal that to fabricate a very accurate and precise inflated membrane mirror relative to the design parameters, one must not only accurately measure and input the moduli in both meridional and hoop directions but an accurately measured Poisson’s ratio as well. The code was used to guide the membrane mirror design. For very small aperture diameters, the initial uninflated shape may be fabricated by thermo-forming the membrane. For aperture diameters exceeding one meter however, the membrane mirror is built with discrete gores that are joined together with tapes at the seams. This provided the impetus to write a companion computer code FLATE, to calculate the gore shapes using a slight modification of the solution to the inverse transformation equation to account for the presence of the seam tapes. After the gores were determined, the resulting final inflated shape was calculated and verified using FAIM. Sensitivity analyses can now be carried out to determine the resulting surface shape as a function of the different sources of error: gore width, gore length, perimeter attachment uncertainties, thermal effects, variation of material properties over the membrane continuum and inflation pressure changes. The code has been shown to be more robust than equivalent commercial analytical packages in so far as membrane, cable and space-frame element combinations are concerned. In particular, the analytical and finite element codes were used in the preliminary assessment of a membrane optic for the OASIS Mission (Orbiting Astronomical Satellite for Investigating Stellar Systems) [1]. The OASIS is a 20-meter class space observatory operating at high spectral resolution in the terahertz frequencies. Over its nominal 2-year mission it will probe conditions and search for biogenic molecules on hundreds of protoplanetary disks and other solar system objects.

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Proceedings Article | 24 August 2021 Open Access

Stressed deformable reflector design and pneumatic membrane antenna for cryogenic thermal vacuum chamber testing

Marcos Esparza, Heejoo Choi, Hyukmo Kang, Christian d'Aubigny, Amarjiit Pandde, Henry Quach, Aman Chandra, Karlene Karrfalt, Yuzuru Takashima, Art Palisoc, Jonathan Arenberg, Kristy Gogick Marshall, Christopher Glynn, Sean Godinez, Marcos Tafoya, Brandon Chalifoux, Christopher Walker, Daewook Kim

Proceedings Volume 11820, 118200R (2021) https://doi.org/10.1117/12.2594403

KEYWORDS: Actuators, Reflectors, Computer aided design, Antennas, Prototyping, Polonium, Reflector design, Aluminum, Wavefronts, Solid modeling

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Proceedings Article | 24 August 2021 Presentation + Paper

OASIS architecture: key features

Jonathan Arenberg, Michaela Villareal, Jud Yamane, Tony Yu, Justin Lazear, John Pohner, Mitchell Sangalis, Steven Jackson, Elisabeth Morse, Ryan Tyler, Pradipto Ghosh, Art Palisoc, Christopher Walker, Yuzuru Takashima, Daewook Kim, Siddhartha Sirsi, Aman Chandra

Proceedings Volume 11820, 118200S (2021) https://doi.org/10.1117/12.2594681

KEYWORDS: Observatories, Reflectors, Receivers, Space operations, Telescopes, Sun, Solar radiation models, Solar radiation, Mirrors, Bolometers

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Proceedings Article | 24 August 2021 Open Access

Parametric design study of the Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS) space telescope

Siddhartha Sirsi, Yuzuru Takashima, Art Palisoc, Aman Chandra, Christopher Walker, Daewook Kim

Proceedings Volume 11820, 118200Q (2021) https://doi.org/10.1117/12.2594208

KEYWORDS: Mirrors, Reflectors, Zemax, Astronomy, Wavefronts, Satellites, Optical instrument design, Optical components, Space telescopes

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Proceedings Article | 20 August 2020 Presentation + Paper

Full-aperture optical metrology for inflatable membrane mirrors

Henry Quach, Joel Berkson, Siddhartha Sirsi, Heejoo Choi, Ruben Dominguez, Brian Duffy, David Lesser, Yuzuru Takashima, Art Palisoc, Christopher Walker, Dae Wook Kim

Proceedings Volume 11487, 114870N (2020) https://doi.org/10.1117/12.2569750

KEYWORDS: Deflectometry, Metrology, Reflectors, Photogrammetry, Telescopes

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Proceedings Article | 18 December 2002 Paper

Large-diameter holographically corrected membrane telescope

Geoff Andersen, Randall Knize, Arthur Palisoc, Costas Cassapakis

Proceedings Volume 4849, (2002) https://doi.org/10.1117/12.460451

KEYWORDS: Mirrors, Holography, Holograms, Space telescopes, Telescopes, Diffraction, 3D image reconstruction, Collimators, Point spread functions, Image resolution

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SPIE Journal Paper | 1 July 2002

Large-aperture, holographically corrected membrane telescope

Geoff Andersen, Randall Knize, Arthur Palisoc, Costas Cassapakis

OE, Vol. 41, Issue 07, (July 2002) https://doi.org/10.1117/12.10.1117/1.1481510

KEYWORDS: Mirrors, Holograms, Holography, Telescopes, Space telescopes, 3D image reconstruction, Point spread functions, Image resolution, Reflectivity, Image processing

Proceedings Article | 28 August 1998 Paper

Geometry attained by pressurized membranes

Arthur Palisoc, Gordon Veal, Costas Cassapakis, Gyula Greschik, Martin Mikulas

Proceedings Volume 3356, (1998) https://doi.org/10.1117/12.324493

KEYWORDS: Reflectors, Space telescopes, Antennas, Shape analysis, Software, Chemical elements, Skin, Aerospace engineering, Manufacturing, Telescopes

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An intensive investigation has been carried out to study the surface profiles obtained as a result of the large deformations of pressurized membranes. The study shows that the inflated membrane shapes may have the requisite surface accuracy for use in future large space apertures. Both analytical and experimental work have been carried out. On the analytical side, the classical work of Hencky on flat circular membranes was extended to eliminate the limitations it imposed; namely a lateral non-follower pressure with no pre-stress. The result is a computer program for the solution of the pressurized circular membrane problem. The reliability of the computer program is demonstrated via verification against FAIM, a nonlinear finite element solver developed primarily for the analysis of inflated membrane shapes. The experimental work includes observations made by Veal on the (W-shaped) deviations between the membrane deflected shape and the predicted profile. More recent measurements have been made of the deformations of pressurized flat circular and parabolic membranes using photogrammetric techniques. The surface error quantification analyses include the effect of material properties, geometric properties, loading uncertainties, and boundary conditions. These effects are very easily handled by the special FEM code FAIM which had recently been enhanced to predict the on-orbit dynamics, RF, and solar concentration characteristics of inflatable parabolic antennas/reflectors such as the IAE that flew off the space shuttle Endeavour in May 1996. The results of measurements have been compared with analyses and their ramifications on precision-shape, large-aperture parabolic space reflectors are discussed. Results show that very large space apertures with surface slope error accuracies on the order to space reflectors are discussed. Results show that very large space apertures with surface slope error accuracies on the order of 1 milliradian or less are feasible. Surface shape accuracies of less than 1 mm RMS have been attained on ground measurements.

Showing 5 of 13 publications

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