| Autor: |
Charles Tan, Samuel C. Bradford, John Steeves, James R. Tucker, Aaron Armour, Jamie Abbott, Flora S. Mechentel, P. D. Lisman, Jeremy Senne, Manan Arya, Gregg Freebury, Larry Chan, Siu-Chun Lee, David J. Webb, David Opland |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Techniques and Instrumentation for Detection of Exoplanets X. |
| Popis: |
We describe testing and analysis conducted to demonstrate in-space thermoelastic shape stability of starshade structures. Thermoelastic deformation testing was conducted on key starshade structural components. These components were constructed at relevant scales and at relevant fidelity to flight-like structures. Results from thermoelastic deformation testing were used to calibrate high-fidelity finite element structural analysis techniques; these finite element tools were then used to predict the in-space thermoelastic distortions of a 26 m-diameter starshade. The in-space temperatures for these structures were predicted using a separate radiative-thermal finite element simulations, and were meant to envelope temperatures that a starshade would experience during periods of telescope shading. The predicted in-plane thermoelastic deformations of this 26 m-diameter starshade were found to be sufficient to fit into an overall error budget to enable instrument contrast better than 1e-10. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
