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Proceedings Paper

Advances in starshade technology readiness for an exoplanet characterizing science mission in the 2020’s
Author(s): David Webb; Manan Arya; Samuel Bradford; Evan Hilgemann; John Steeves; Stuart Shaklan; Doug Lisman; Gregg Freebury
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Paper Abstract

This paper presents an overview of the work to date on the mechanical system for Starshade to TRL5 (S5) Technology Development Plan, with emphasis on the technical status compared to the upcoming technology milestones with an overview of how that work fits into the overall technology plan. The conclusion of the NASA trade study in 2018 for the starshade mechanical architecture resulted in a consolidated and focused approach, which was the baseline design used for the technology plan. Recent progress has included the production of multiple prototypes including a full-scale Petal Launch Restraint & Unfurl Subsystem prototype (14m tip to tip deployed), and has included demonstrations of the design from fully stowed to deployed. A10m (full-scale) inner disk subsystem including perimeter truss and optical shield was designed, analyzed, built and tested for deployment functionality and accuracy. Lastly, a 4m long × 1.5m wide (1/2 scale × 3/4 scale) petal prototype along with shape critical components of the perimeter truss have been built and tested for thermal stability. The culmination of this work, both in the design side and the prototype side, has led to greatly improved design fidelity, and most importantly, validation of the design against the performance requirements. This provides much greater confidence in the viability of the design, and much lower risk moving forward toward technology readiness level 5, and eventually a flight mission.

Paper Details

Date Published: 17 September 2019
PDF: 15 pages
Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111170P (17 September 2019); doi: 10.1117/12.2530739
Show Author Affiliations
David Webb, Jet Propulsion Lab. (United States)
Manan Arya, Jet Propulsion Lab. (United States)
Samuel Bradford, Jet Propulsion Lab. (United States)
Evan Hilgemann, Jet Propulsion Lab. (United States)
John Steeves, Jet Propulsion Lab. (United States)
Stuart Shaklan, Jet Propulsion Lab. (United States)
Doug Lisman, Jet Propulsion Lab. (United States)
Gregg Freebury, TENDEG, LLC (United States)

Published in SPIE Proceedings Vol. 11117:
Techniques and Instrumentation for Detection of Exoplanets IX
Stuart B. Shaklan, Editor(s)

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