Что за материал на нервюрах?

Русинов_Сергей


VVS2:

Что за материал на нервюрах?

It consists of composite main spar with carbon caps on which are glued ribs made of extruded polystyren. It is covered with 1 mm plywood. Wingtips are made of extruded polystyren with fiberglass layup or premolded are vacuum bagged sandwich

Остеклованная пена.