Within the FIRST Technology Studies, a parabolic high precision antenna reflector with a diameter of 3m has to be developed. To ensure an optimum of operational performance, the reflector surface has to be stable under orbit conditions. The technical concepts for the reflector are developed in several steps, on the basis of a 0.5m panel and a 1.1m reflector. Here, the concept of an all CFRP sandwich panel with an optimized design is presented which is able to satisfy the high requirements concerning surface and contour accuracy. The interaction of material behavior and design is to be discussed. Beyond design problems, advanced manufacturing processes necessary to realize the reflector are presented. It is shown that three important factors, i.e. a favourable selection of material, design optimization and highly accurate manufacturing processes, have been the basis of the successful development of a high precision lightweight structure. Finally, the results of a test are mentioned, illustrating the high degree of accuracy which can be met.
Material tailoring and design optimization for the FIRST reflector
Materialbestimmung und Entwurfsoptimierung für den FIRST-Reflektor
1994
7 Seiten, 17 Bilder, 3 Quellen
Aufsatz (Konferenz)
Englisch
Satellitenantenne , Reflektor (Antenne) , Maßgenauigkeit , Betriebsleistung , Oberfläche , Sandwich-Bauweise , Verbundwerkstoff , Werkstoffeigenschaft , Herstellungsverfahren , Materialauswahl , Struktur (Werkstoff) , Versuchsergebnis , geometrische Form , Genauigkeit , mechanische Eigenschaft , Fertigungsverfahren , Mikrogefüge , experimentelle Untersuchung , Parabolantenne
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