Dr. Gabriel A. Sznejer
David Wang Auditorium, 3rd floor Dalia Meidan Bldg.
Rafael’s Composite Materials group has been involved in the Israeli space program since its beginning in the late 80’s. This group produces structures for most projects of the space program specializing in design, fabrication and testing of lightweight aerospace structural assemblies. The design of these structures involves analysis for extreme conditions including: natural frequencies; dynamic environments, vibration and shock; temperature effects such as soaking and different temperature patterns; moisture release effects; gravity effects and acoustic effects.
The composite structures are manufactured using a wide range of composite material technologies. The materials used are based on prepregs with carbon fibers and Cyanate Ester resins. This unique material, together with different production technologies, ensure the performance of these structures under space requirements, such as low out-gassing, low coefficient of thermal expansion and low coefficient of moisture expansion. To ensure the structures’ performance, many tests are performed.
The seminar will present space composite materials activities, along with specific focus on properties of the prepreg, with an emphasis on the properties of the Cyanate Ester resin, that enable design and manufacture of a high dimensional stability structure. It will also present generic requirements for space structures like satellite bus, earth observation telescopes and deployable antenna components along with several space qualified structures.