Front cover for space optical telescopes. a legacy from ROSETTA to JUICE
G. Parzianello, M. Bartolomei, S. Chiodini, M. Zaccariotto, G. Colombatti, A. Aboudan, C. Bettanini, S. Debeidownload PDF
Abstract. The reliability of a telescope’s front cover for a space mission constitutes its primary demand, not to compromise the functionality of the entire instrument. Avoidance to expose possible reference surfaces to the external environment and contamination often drives the selection of the motion of the cover. The Front Door Mechanism (FDM) for the OSIRIS experiment of the ROSETTA mission has been developed and optimised to provide protection of the telescope, reliable functioning and being single point failure tolerant. Its combined translational and rotational motion allowed also the preservation of internal calibration surface for the entire duration of the mission. The ROSETTA mission was launched in 2004 and reached the comet in 2014 after several gravity assists, and deep space hibernation. It has been orbiting around the comet for roughly two years collecting enormous amount of data of the peculiar celestial body and ended in September 2016. As legacy of the successful design of the front cover for the ROSETTA mission, another cover mechanics (Cover Mechanism – COM) for the JANUS Optical Head Unit of the JUICE mission has been prepared with minor modifications to the initial design. All qualification has been performed and the JUICE mission has been launched successfully on 14 April 2023 and is now travelling towards Jupiter and its moons.
Front Door, Cover, Telescope, Space Mechanism, Rosetta, JUICE
Published online 11/1/2023, 5 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: G. Parzianello, M. Bartolomei, S. Chiodini, M. Zaccariotto, G. Colombatti, A. Aboudan, C. Bettanini, S. Debei, Front cover for space optical telescopes. a legacy from ROSETTA to JUICE, Materials Research Proceedings, Vol. 37, pp 725-729, 2023
The article was published as article 155 of the book Aeronautics and Astronautics
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