Silicon nitride ceramic development in Thales Alenia Space : qualification achievement and further developments for future applications
| Autor: | Stéphanie Behar-Lafenetre, S. Ait-Zaid, Laurence Cornillon, K. Berroth, Christophe Devilliers, A. C. Bravo |
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| Rok vydání: | 2017 |
| Předmět: |
Earth observation
Materials science Silicon business.industry chemistry.chemical_element Truss Mechanical engineering Space (mathematics) chemistry.chemical_compound Development (topology) chemistry Silicon nitride visual_art visual_art.visual_art_medium High spatial resolution Ceramic Aerospace engineering business |
| Zdroj: | International Conference on Space Optics — ICSO 2014. |
| DOI: | 10.1117/12.2304158 |
| Popis: | Dealing with ceramic materials for more than two decades, Thales Alenia Space – France has identified Silicon Nitride Si3N4 as a high potential material for the manufacturing of stiff, stable and lightweight truss structure for future large telescopes. Indeed, for earth observation or astronomic observation, space mission requires more and more telescopes with high spatial resolution, which leads to the use of large primary mirrors, and a long distance between primary and secondary mirrors. Therefore current and future large space telescopes require a huge truss structure to hold and locate precisely the mirrors. Such large structure requires very strong materials with high specific stiffness and a low coefficient of thermal expansion (CTE). Based on the silicon nitride performances and on the know how of FCT Ingenieurkeramik to manufacture complex parts, Thales Alenia Space (TAS) has engaged, in cooperation with FCT, activities to develop and qualify silicon nitride parts for other applications for space projects. |
| Databáze: | OpenAIRE |
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