Solid material e.g. mud coating, formation prevention device for armored vehicle air outlet, has shutter with two vibration fins of different types and mounted alternately on support and vibrating in different manner

摘要

The device has a shutter (1) with two vibration fins (3a, 3b) fixed on a support (2). The fins are of different types and are mounted alternately and vibrate in a different manner. One fin (3a) is connected to the support by N fasteners and the other fin (3b) is connected to the support by N+/-1 fasteners. The support is made of bars that are perpendicular to the axial direction of the fins.