Fire suppression system for aviation vehicle

A fire-suppression system for an aviation vehicle, the fire-suppression system comprising

• a tank including a shell comprising composite materials and being formed to include an internal fluid-storage region and an inlet aperture located on a side wall of the shell that opens into the internal fluid-storage region, a plurality of baffles located in the internal fluid-storage region and arranged to extend along a length and a width of the tank, an exit nozzle coupled to a bottom surface of the shell, the exit nozzle formed to include an exit aperture that is arranged along a vertical axis, and a shell support unit including a forward support structure located forward of the vertical axis and an aft support structure located aft of the vertical axis,
• a plug aligned with the exit aperture on the vertical axis, and
• a plug actuator coupled to the shell and the plug, plug actuator configured to move the plug along the vertical axis from an open position, in which the fluid passes around the plug and through the exit aperture and forms a laminar flow as it exits through the nozzle, to a closed position, in which the plug engages the exit nozzle to block fluid from passing through the exit aperture.

A fire-suppression system comprising

• a tank formed to include an interior fluid-storage region and an exit aperture formed in a bottom wall of the tank and
• a plug coupled to the tank and configured to move between a first position, in which the exit aperture is open, and a second position, in which the plug is arranged to lie in the exit aperture to close the exit aperture,
• wherein the plug is symmetrical relative to an axis that extends through a center of the exit aperture and the plug includes a dome-shaped upper portion and a conical-shaped lower portion such that the plug has an inverted teardrop cross-section when viewed from the side.