Abstract: A ventilating and particle-filtering airflow methodology for managing the flow of air to the electrical sliding-contact zone of an on-board aircraft (vehicle) electrical generator. Conduit structure collects intaken air during aircraft (vehicle) engine operation, filters this air to capture and prevent the passage of particles, and directs filtered airflow to that brush region through a close-coupled fluid-flow connection which closes upon and substantially isolates (in terms of incoming airflow) that region. Water drainage is provided for in a region near where filtering takes place. The filtered airflow is substantially the only airflow admitted to this protected region.

Abstract: An air intake manifold for providing air from an exterior of a vehicle to a ventilation system of the vehicle. A primary plenum chamber has an intake passageway formed therein. The intake passageway is adapted to allow air from the exterior of the vehicle to enter the primary plenum chamber. A secondary plenum chamber is located within the primary plenum chamber. A shield is attached to the primary plenum chamber and extends over the secondary plenum chamber. A secondary inlet passageway is formed in an upper portion of the secondary plenum chamber. The secondary inlet passageway fluidly connects the primary plenum chamber to the secondary plenum chamber. A filter member covers the secondary inlet passageway to prevent debris from entering the secondary plenum chamber via the secondary inlet passageway. An outlet passageway is formed in the secondary plenum chamber. The outlet passageway fluidly connects the secondary plenum chamber to the ventilation system.