IN-FLIGHT REFUELING SYSTEM CONE Russian patent published in 2021 - IPC B64D39/00 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to in-flight refueling. The cone of the in-flight refueling system (1) has a housing (2) with a receiving socket (3) of the contact node and a locking device (4) and a fuel valve housing (5) with a cylindrical chamber (6). A spring-loaded piston (7) of the fuel valve is placed in the chamber (6). The fuel valve body (5) is provided with an inlet (11), on the inside of which a sealing seat (12) and a channel (13) covering a cylindrical chamber (6) and communicating the inlet (11) with the socket (3) of the contact node are made. The piston (7) of the fuel valve (5) is provided with a sealing assembly (14) along the cylindrical surface (15) of the chamber (6) and a blind end surface (16) with a seal (17) pressed to the seat (12). The blind surface (16) has a throttle opening (18). The diameter of the seat (12) is smaller than the diameter of the piston (7) on the cylindrical surface (15). In this case, the chamber (6) on the side of the socket (3) of the contact node is equipped with a spring-loaded pressure valve (19). The pusher (20) of the spring-loaded pressure valve (19) is located in the socket (3) of the contact node.

EFFECT: ensuring the opening force of the cone valve, practically independent of fuel pressure in the fuel line of the cone.

2 cl, 2 dwg