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 W. Arenberg; Kristy Gogick Marshall; Christopher S. Glynn; Sean M. Godinez; Marcos Tafoya; Christopher Walker; Christian Drouet d’Aubigny; Daewook Kim

doi:10.1117/12.2594902

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 W. Arenberg
, Kristy Gogick Marshall
, Christopher S. Glynn
, Sean M. Godinez
, Marcos Tafoya
, Christopher Walker
, Christian Drouet d’Aubigny
, Daewook Kim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Scopus citations

Abstract

The Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS) is a 20-meter class proposed space terahertz observatory supported by an inflatable membrane architecture. To measure 150 mm and 1m models of the A1 reflective membrane antenna, two deflectometry configurations were designed. The smaller assembly and its corresponding deflectometer were simulated, built in our laboratory, and produce a reconstructable signal for clocked measurements of the highly-sloped pneumatic surface. We use non-sequential raytracing simulation to bound the maximum contributions of all shape errors and suggest the N-Rotations algorithm to remove the remaining radially asymmetric errors. Then, the 1m prototype assembly was tested inside a thermal vacuum chamber (TVAC). Differential deflectometry measurements tracked the 1m surface shape changes as it was subjected to a variety of environmental setpoints, cycled between three inflation gases, and also during controlled puncture. We summarize our development and results for absolute measurements as well as from TVAC testing.

Original language	English (US)
Title of host publication	Astronomical Optics
Subtitle of host publication	Design, Manufacture, and Test of Space and Ground Systems III
Editors	Tony B. Hull, Daewook Kim, Pascal Hallibert, Fanny Keller
Publisher	SPIE
ISBN (Electronic)	9781510644786
DOIs	https://doi.org/10.1117/12.2594902
State	Published - 2021
Event	Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III 2021 - San Diego, United States Duration: Aug 1 2021 → Aug 5 2021

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11820
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III 2021
Country/Territory	United States
City	San Diego
Period	8/1/21 → 8/5/21

Keywords

Deflectometry
Large aperture metrology
Membrane inflatable mirrors
TVAC

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2594902

Cite this

Quach, H., Esparza, M., Kang, H., Chandra, A., Choi, H., Berkson, J., Karrfalt, K., Sirsi, S., Takashima, Y., Palisoc, A., Arenberg, J. W., Marshall, K. G., Glynn, C. S., Godinez, S. M., Tafoya, M., Walker, C., d’Aubigny, C. D., & Kim, D. (2021). Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna. In T. B. Hull, D. Kim, P. Hallibert, & F. Keller (Eds.), Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III Article 118200W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11820). SPIE. https://doi.org/10.1117/12.2594902

Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna. / Quach, Henry; Esparza, Marcos; Kang, Hyukmo et al.
Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III. ed. / Tony B. Hull; Daewook Kim; Pascal Hallibert; Fanny Keller. SPIE, 2021. 118200W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11820).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Quach, H, Esparza, M, Kang, H, Chandra, A, Choi, H, Berkson, J, Karrfalt, K, Sirsi, S, Takashima, Y, Palisoc, A, Arenberg, JW, Marshall, KG, Glynn, CS, Godinez, SM, Tafoya, M, Walker, C, d’Aubigny, CD & Kim, D 2021, Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna. in TB Hull, D Kim, P Hallibert & F Keller (eds), Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III., 118200W, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11820, SPIE, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III 2021, San Diego, United States, 8/1/21. https://doi.org/10.1117/12.2594902

Quach H, Esparza M, Kang H, Chandra A, Choi H, Berkson J et al. Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna. In Hull TB, Kim D, Hallibert P, Keller F, editors, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III. SPIE. 2021. 118200W. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2594902

Quach, Henry ; Esparza, Marcos ; Kang, Hyukmo et al. / Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna. Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III. editor / Tony B. Hull ; Daewook Kim ; Pascal Hallibert ; Fanny Keller. SPIE, 2021. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "The Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS) is a 20-meter class proposed space terahertz observatory supported by an inflatable membrane architecture. To measure 150 mm and 1m models of the A1 reflective membrane antenna, two deflectometry configurations were designed. The smaller assembly and its corresponding deflectometer were simulated, built in our laboratory, and produce a reconstructable signal for clocked measurements of the highly-sloped pneumatic surface. We use non-sequential raytracing simulation to bound the maximum contributions of all shape errors and suggest the N-Rotations algorithm to remove the remaining radially asymmetric errors. Then, the 1m prototype assembly was tested inside a thermal vacuum chamber (TVAC). Differential deflectometry measurements tracked the 1m surface shape changes as it was subjected to a variety of environmental setpoints, cycled between three inflation gases, and also during controlled puncture. We summarize our development and results for absolute measurements as well as from TVAC testing.",

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AU - Karrfalt, Karlene

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N2 - The Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS) is a 20-meter class proposed space terahertz observatory supported by an inflatable membrane architecture. To measure 150 mm and 1m models of the A1 reflective membrane antenna, two deflectometry configurations were designed. The smaller assembly and its corresponding deflectometer were simulated, built in our laboratory, and produce a reconstructable signal for clocked measurements of the highly-sloped pneumatic surface. We use non-sequential raytracing simulation to bound the maximum contributions of all shape errors and suggest the N-Rotations algorithm to remove the remaining radially asymmetric errors. Then, the 1m prototype assembly was tested inside a thermal vacuum chamber (TVAC). Differential deflectometry measurements tracked the 1m surface shape changes as it was subjected to a variety of environmental setpoints, cycled between three inflation gases, and also during controlled puncture. We summarize our development and results for absolute measurements as well as from TVAC testing.

AB - The Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS) is a 20-meter class proposed space terahertz observatory supported by an inflatable membrane architecture. To measure 150 mm and 1m models of the A1 reflective membrane antenna, two deflectometry configurations were designed. The smaller assembly and its corresponding deflectometer were simulated, built in our laboratory, and produce a reconstructable signal for clocked measurements of the highly-sloped pneumatic surface. We use non-sequential raytracing simulation to bound the maximum contributions of all shape errors and suggest the N-Rotations algorithm to remove the remaining radially asymmetric errors. Then, the 1m prototype assembly was tested inside a thermal vacuum chamber (TVAC). Differential deflectometry measurements tracked the 1m surface shape changes as it was subjected to a variety of environmental setpoints, cycled between three inflation gases, and also during controlled puncture. We summarize our development and results for absolute measurements as well as from TVAC testing.

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KW - Large aperture metrology

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Deflectometry-based thermal vacuum testing for a pneumatic terahertz antenna

Abstract

Publication series

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Keywords

ASJC Scopus subject areas

Access to Document

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