COATING FOR DECREASING DRAG Russian patent published in 1996 - IPC

FIELD: fluid dynamics. SUBSTANCE: coating has members uniformly arranged over the carrying surface. The members are corrugated from the side exposed to the flow and face the carrying surface by their flat side. The coating members are arranged on carrying surface with a spaced relation and guaranteed overlapping. Each member consists of parallel flat plate and corrugated plate mounted with a spaced relation to each other. The plates are interconnected through lateral perforated ribs. Lags are positioned at the center of the first ribs of the members. The lags are made of a flexible material and provided with vibration insulators to connect them with the carrying surface. The members are extended along the hollows of the corrugated plates. The hollows of the corrugated plates are perforated. EFFECT: enhanced efficiency. 3 cl, 4 dwg