In this paper, we describe the optical design and the mechanical structure of the instrument. Finite element analysis is carried out to estimate the gravitational flexure and the thermal deformations, which can both harm the pointing accuracy and the performances of the instrument. These simulations show that the proposed design would fulfill the different requirements (pointing accuracy, landing survival as well as the dynamic behavior).
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Jean-Laurent Dournaux, Christophe Berthod, David Horville, Jean-Michel Huet, Philippe Laporte, Martina Wiedner, Alexia Romanow, Jean-Michel Krieg, Laurent Pagani, Jean Evrard, Albert Gomes, Martine Jouret, "Challenges of the opto-mechanical conceptual design of a small far-IR balloon experiment," Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91452T (22 July 2014);