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Aerotecnica Missili & Spazio

, Volume 98, Issue 3, pp 199–206 | Cite as

Thermal Influence of the Screw Axial Load on a 1-mm Accuracy Laser Ranged Satellite

  • S. CasiniEmail author
Original article
  • 22 Downloads

Abstract

This work explores the role of the screw axial load on the temperature experienced by the mounting set of a Cube Corner Retroreflector (CCR) in a spherical satellite, designed to achieve 1-mm accuracy in satellite laser ranging. Since thermal gradients inside CCRs induce refractive index gradients, changing the optical behaviour, thermal analysis and simulation are needed to ensure the best performances. The screw axial load influences the thermal interface resistances between the rings of the mounting set, changing their thermal behaviour. It is important to study the temperature, not only for the thermal gradients inside a CCR, but also to check that the Kel-F mounting rings do not overcome their maximum operative temperature. Two models have been realized in the commercial software C&R Thermal Desktop®: a model to simulate the entire satellite behaviour and a detailed model to represent the cavity which includes the CCR and its mounting set. Different on-orbit scenarios are analyzed, focusing on the influence of the screw axial load in each of them.

Keywords

Thermal analysis Thermal modelling Satellite laser ranging Cube corner retroreflector 

Notes

Acknowledgements

I wish to thank the SCF_Lab for giving me the opportunity to work on this interesting project, in particular Giovanni Delle Monache, Simone Dell’Agnello and prof. Luciano Iess, my academic supervisor during the internship.

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Copyright information

© AIDAA Associazione Italiana di Aeronautica e Astronautica 2019

Authors and Affiliations

  1. 1.National Institute for Nuclear PhysicsNational Laboratories of FrascatiFrascatiItaly

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