AIRCRAFT FIREFIGHTING SYSTEMS, EDUCTORS, AND METHODS OF USE

摘要

An eductor includes inner and outer channels and a manifold region where these channels come together. The eductor has an outlet and inlets including a water inlet, a fire suppressant material inlet, and an air inlet. In certain embodiments, the eductor has mixing, rinse, and air purge configurations. In the mixing configuration, the eductor has both: i) a primary water flow path extending from the water inlet, through the outer channel, and into the manifold region, and ii) a fire suppressant flow path extending from the fire suppressant inlet, through the inner channel, and into the manifold region. In the rinse configuration, the eductor has a secondary water flow path extending from the water inlet, through the inner channel, and into the manifold region. In the air purge configuration, the eductor has an air flow path extending from the air inlet, though the inner channel, and into the manifold region.

主权项

1. An eductor to mix water together with a fire suppressant material, the eductor comprising inner and outer channels that are concentric and a manifold region at a location where the inner and outer channels come together, the eductor comprising a plurality of inlets and an outlet, the plurality of inlets including a water inlet, a fire suppressant material inlet, and an air inlet, the eductor having a mixing configuration, a rinse configuration, and an air purge configuration, the eductor when in the mixing configuration simultaneously has both: i) a primary water flow path extending from the water inlet, through the outer channel, and into the manifold region, and ii) a fire suppressant material flow path extending from the fire suppressant material inlet, through the inner channel, and into the manifold region, the eductor when in the rinse configuration has a secondary water flow path extending from the water inlet, through the inner channel, and into the manifold region, the eductor when in the air purge configuration has an air flow path extending from the air inlet, though the inner channel, and into the manifold region.