METHOD FOR ISOLATING UNMANNED AIRCRAFT COMPARTMENT WHEN FILLING FUEL TANK AND DEVICE FOR USING THE METHOD Russian patent published in 2021 - IPC B64D37/14 

FIELD: unmanned aircraft.

SUBSTANCE: invention relates to the supply of fuel to the propulsion systems of unmanned aircrafts. The method of isolating the compartment of an aircraft when filling its fuel tank consists in the fact that there is a filler neck (3) in the opening of the frame (4) of the compartment of the aircraft. The filler neck is equipped with a filler neck cap (10), and the filler neck (3) and the cap (10) are fixed with the help of threaded joints. There are threaded holes in the projection (7) of the filler neck for fixing the cap (10) of the filler neck (3). Blind holes without threads are made in the ledge (8) of the frame opening. The device for isolating the aircraft compartment when filling the fuel tank has the filler neck (3) and the filler neck cap (10) fixed in the opening of the aircraft compartment frame with threaded joints. The filler neck cap (3) does not go beyond external contours of the unmanned aircraft.

EFFECT: isolating the compartment of the unmanned aircraft while filling its fuel tank. Invention helps to maintain the strength and aerodynamic characteristics of the aircraft.

4 cl, 3 dwg