Assessing the Thermo-Mechanical Behaviour of the CORE Hinge
for the Deployable Space Telescope
T.R. Gritter (TU Delft - Aerospace Engineering)
J. Bouwmeester – Mentor (TU Delft - Space Systems Egineering)
Hans Kuiper – Graduation committee member (TU Delft - Space Systems Egineering)
Marc C. Naeije – Graduation committee member (TU Delft - Astrodynamics & Space Missions)
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Abstract
The Deployable Space Telescope (DST) is a telescope that uses foldable optical elements to reach state-of-the-art ground resolutions while minimising the launch volume and total mass of the system. One of the promising concepts that is part of the DST design is the Compliant Rolling-Element (CORE) Hinge. This hinge uses compliant links to let two semi-circular cams roll over each other with minimal friction. For this thesis, a thermo-mechanical analysis is conducted of the DST CORE hinges to determine whether the current design complies with the stability and in-orbit drift requirements of the DST. From this analysis, it can be concluded that this is currently not the case, but that a simple solution is at hand. By elongating the baffle of the DST, which protects the DST from solar irradiation, more solar radiation is blocked and the stability and in-orbit drift are kept within limits.