HELICOPTER FIRE TANK /VERSIONS/ Russian patent published in 2012 - IPC B64D1/00 

FIELD: fire-prevention facilities.

SUBSTANCE: invention relates to aviation facilities for fire extinguishing and is designed to extinguish forest fires. The helicopter fire tank in the version of realisation comprises a reservoir, an inlet valve, several nozzles in its lower part, besides, nozzles are directed along the horizontal line to all sides, and along the vertical line a half of nozzles is directed upwards at the angle of 1-45° to the horizontal line, and the other half is directed horizontally or downwards at the angle of 1-30° to the vertical line. Nozzles are connected to the tank with one common or individual controllable valves. The fire tank may be equipped with nozzles of shower or centrifugal type, directed downwards, TV cameras, an aerodynamic stabiliser. In one of the versions the helicopter fire tank is arranged as fully tight and has a supercharging system and a valve that connects the tank cavity with atmosphere. In the other version the tank has a pipe directed downwards into the lower part, at the end of which there are nozzles installed. In the fourth version of realisation the tank has a vertical wind at the bottom, the centre of lifting force of which is on one vertical line with the centre of the tank gravity.

EFFECT: invention provides for higher efficiency of forest fires extinguishing.

9 cl, 3 dwg