Environmental challenges to OASIS’s primary reflector

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

doi:10.1117/12.2594706

29 March 2022 Environmental challenges to OASIS’s primary reflector

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

Author Affiliations +

Proceedings Volume 11820, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III; 118200T (2022) https://doi.org/10.1117/12.2594706
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

This paper discusses pressure control for the OASIS primary antenna element, A1. This discussion is centered around the evaluation of pressure changes and what might drive them. A1 is created from thin polyimide film and from its orbital position near Sun-Earth L1, is subject to many environmental effects, the solar wind, radiation pressure, charging and micrometeoroids. This paper begins by describing the architecture of the pressure control system. We show that the solar wind and radiation pressure are too small to impact A1’s performance. We also discuss the need to connect the A1 to system ground for solid technical and programmatic reasons. A large section discusses the micrometeoroid environment and how recent mission data shows that the flux faced by OASIS is likely larger by factor of ~3 than might be expected from naïve application of the traditional models.

Conference Presentation

Citation Download Citation

Jonathan W. Arenberg, Micahaela N. Villareal, George Harpole, Dan McGregor, Ariane Walker-Horne, John Pohner, Kevin Moore, Alex Clithero, Lauren Halvonik Harris, Tom Meyer, and Art Palisoc "Environmental challenges to OASIS’s primary reflector", Proc. SPIE 11820, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III, 118200T (29 March 2022); https://doi.org/10.1117/12.2594706

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