A sprinkler for a fire suppression system includes a deflector plate having five different types of slots extending from a periphery of the plate toward a center of the plate along radially extending lines. The slots are arrow shaped, club shaped and key hole shaped. Arrow head slots which align with frame arms supporting the deflector plate are wider than the thickness of the frame arms. Club shaped and arrow shaped slots proximate the plane of the frame arms are asymmetrical with respect to radial lines extending from the center of the plate, while arrow shaped and key hole shaped slots distal to the plane of the frame arms are symmetrical with respect to radial lines extending from the center of the plate.

A fluid supply system includes a fluid delivery system, a sensor positioned to acquire data regarding an operating characteristic and/or a component characteristic of the fluid delivery system, and a monitoring system coupled to the sensor. The fluid delivery system includes a pump having an inlet configured to receive a fluid, an outlet configured to provide a pressurized fluid to a fluid output, a housing defining a chamber that couples the inlet to the outlet, an impeller disposed within the chamber, and an input coupled to the impeller. The input is configured to facilitate driving the impeller to pressurize the fluid received at the inlet to generate the pressurized fluid within the chamber. The monitoring system is configured to determine a health level of a component of the fluid delivery system based on the data and provide a notification in response to the health level not satisfying a threshold.

A relatively small fire apparatus vehicle, which may have a single rear axle, is provided that includes a high-flow articulated water tower that delivers water at a rate of up to 1500 GPM (gallons per minute). The high-flow articulated water tower includes a water splitter that divides a water flow from a pump system into a pair of water flow path segments delivered through a pair of lower tower arm water pipes. The water flow path segments may be recombined in a water stem knuckle at a joint between the lower tower arm and an upper tower arm of the articulated water tower that is delivered as a combined flow through an upper tower arm water pipe and out a delivery nozzle.

A relatively small fire apparatus vehicle, which may have a single rear axle, is provided that includes a high-flow articulated water tower that delivers water at a rate of up to 1500 GPM (gallons per minute). The fire apparatus vehicle may include a turret support arrangement with a torque box that is supported from the vehicle chassis and that supports a turret at its turret base. A pair of outriggers is connected to at least two of the vehicle chassis, the torque box, and the turret base through a pair of outrigger mounts on opposite sides of the vehicle chassis.

A technology is described for performing precision fire retardant or fire suppressant delivery from air-tankers or helicopters. A request can be received to release liquid fire retardant or fire suppressant. Drop door scheduling for the liquid can be calculated using fluid dynamics, air conditions data, airborne vehicle and target locations, digital terrain elevation data, and a ballistic model. A time point can be determined to open a drop door for an airborne vehicle based on the calculated release start point. The drop door can then be dynamically scheduled/controlled throughout the drop phase to continuously adjust for changing air vehicle, air conditions, and terrain variations.

A technology is described for performing precision fire retardant or fire suppressant delivery from air-tankers or helicopters. A request can be received to release liquid fire retardant or fire suppressant. Drop door scheduling for the liquid can be calculated using fluid dynamics, air conditions data, airborne vehicle and target locations, digital terrain elevation data, and a ballistic model. A time point can be determined to open a drop door for an airborne vehicle based on the calculated release start point. The drop door can then be dynamically scheduled/controlled throughout the drop phase to continuously adjust for changing air vehicle, air conditions, and terrain variations.

The autonomous mobile object includes an imaging unit, a positional information sender to acquire and send positional information to a server, and an operation controller to cause the autonomous mobile object to move autonomously based on an operation command. The server includes storage to receive and store the positional information from the autonomous mobile object, a commander to send the operation command to the autonomous mobile object, and a receiver to receive information relating to an emergency report including a target location. When the receiver receives the information relating to the emergency report, the commander sends an emergency operation command to the autonomous mobile object located in a specific area including the target location. The emergency operation command causes the autonomous mobile object to capture an image of the target location, and the autonomous mobile object sends the image to the server.

The autonomous mobile object includes an imaging unit, a positional information sender to acquire and send positional information to a server, and an operation controller to cause the autonomous mobile object to move autonomously based on an operation command. The server includes storage to receive and store the positional information from the autonomous mobile object, a commander to send the operation command to the autonomous mobile object, and a receiver to receive information relating to an emergency report including a target location. When the receiver receives the information relating to the emergency report, the commander sends an emergency operation command to the autonomous mobile object located in a specific area including the target location. The emergency operation command causes the autonomous mobile object to capture an image of the target location, and the autonomous mobile object sends the image to the server.

Methods of and systems for spraying a defensive path around vulnerable neighborhoods out in front of wild fires to make sure that an environmentally-safe fire break, created by the spray application of anti-fire (AF) liquid, defends homes from the destructive forces of raging wild fires. The methods include spraying homes with environmentally-clean anti-fire (AF) chemical liquid, in advance of wild fires. The preferred anti-fire chemical liquid used does not depend on water to extinguish fire, so that, even after a month or two after spray application on dry brush around the neighborhood, the anti-fire chemical continues to work by stalling the ability of a fire to advance and consume homes.

Implementations are disclosed herein that relate to a firefighting system. An example provides a firefighting system comprising a conveyance configured to receive and elevate screened soil, a chute configured to receive the screened soil at an entry point, and a nozzle configured to emit the screened soil toward a fire site, the nozzle comprising an augmentation device configured to increase a flow speed of the screened soil.