AIRCRAFT FIRE-FIGHTING DEVICE WITH RETRACTABLE NOZZLE UNIT Russian patent published in 2022 - IPC A62C3/02 

FIELD: fire-fighting equipment.

SUBSTANCE: proposed device relates to firefighting equipment used to extinguish fires on special areas in case of fires on large areas. Proposed is an aircraft fire-fighting device with a retractable nozzle unit, comprising containers with fire-extinguishing liquid, which are connected via hydraulic channels with distributing devices of drain, which can be used with aircraft vertical take-off and landing devices. Aircraft fire-fighting device is attached to aircraft vertical take-off and landing on identical pairs of ropes from contact plates of tanks with liquid, lengths of ropes from one to another vertical take-off and landing apparatus differ by not more than 1 meter, wherein VTOL propellers are located at angles of equilateral triangle formed by equal-diameter base tubes while tube perpendicular to flight direction comprises retractable injector unit. Each container with liquid on rollers interacts with truss platforms, to which supports of base pipes are attached, containers with fire extinguishing liquid are fixed by plates with cotter pins on semi-bushings of base pipes, centres of gravity of containers with fire extinguishing liquid coincide with vertices of triangle of base pipes. Retractable injector unit includes a cylindrical pipe section with centring on two systems uniformly located along the circumference of three rollers, of which the first is fixed at the end of the cylindrical pipe, and the second is fixed at the end of the base pipe in the section coinciding with the end of the central water pipe, fixed in the centre of the end surface of the base pipe and centred on the opposite end relative to the cylindrical pipe by its system of three rollers evenly arranged along its circumference, on the central water pipe there is an end seal from above, which interacts with the end surface of the cylindrical pipe, the end of the cylindrical pipe contains through holes for the passage of water, passing into the nozzles located on the outer surface of the pipe, and a plug interacting with the open end of the base pipe, the inlet of the central water pipe is connected to the outlet of the pump, which is hydraulically connected in series with all the liquid tanks, wherein the upper hole of the last tank is connected to the outlet of the fan fixed on the base pipe.

EFFECT: higher accuracy of fire extinguishing, reduced consumption of fire extinguishing agents, higher efficiency of extinguishing all types of forest fires using aircraft.

1 cl, 3 dwg