Modeling and characterization of OASIS inflatable primary antenna by dual modality metrology
AffiliationDepartment of Astronomy and Steward Observatory, University of Arizona
Wyant College of Optical Sciences, University of Arizona
MetadataShow full item record
PublisherOptica Publishing Group (formerly OSA)
CitationSirsi, S., Quach, H., Kang, H., Morken, P., Palisoc, A., Takashima, Y., D’Aubigny, C., Chandra, A., Esparza, M., Karrfalt, K., Derby, K. Z., Choi, H., Kim, D., & Walker, C. (2022). Modeling and characterization of OASIS inflatable primary antenna by dual modality metrology. Optics Express, 30(19), 33479–33489.
RightsCopyright © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
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AbstractOASIS (Orbiting Astronomical Satellite for Investigating Stellar Systems) is a space-based observatory with a 14 m diameter inflatable primary antenna that will perform high spectral resolution observations at terahertz frequencies. The large inflatable aperture, non-traditional surface configuration, and the double layered membrane structure afford unique challenges to the modeling and testing of the primary antenna. A 1-meter prototype of the primary antenna (A1) was built to validate our technical approach. A laser radar coordinate measuring system was adopted to measure the shape of A1. In addition, deflectometry was performed to monitor the stability of A1 during the radar measurement. Test cases pertaining to specific operational conditions expected for the 14 m OASIS primary were explored. The measured data were then compared to the Fichter model and Finite-element Analyzer for Inflatable Membranes (FAIM). © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
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