AIRCRAFT FUEL SYSTEM (VERSIONS) Russian patent published in 2010 - IPC B64D37/06 

FIELD: transport.

SUBSTANCE: invention refers to aircraft industry, namely to aircraft fuel systems. Fuel system includes fuel tank interconnected with gas supply and fuel intake lines. In fuel tank there located is intake pipeline having fixed section attached to tank wall and interconnected with fuel intake line, and movable section, which are interconnected by means of hinged connection. Movable section is made so that it can be turned relative to longitudinal tank axis in gravity force direction. Hinged connection is equipped with independent grease supply device made in the form of compressed gas source and service tank with solid grease. Service tank is attached to tank wall on the outside by means of detachable connection, interconnected with compressed gas source and equipped with grease supply line to hinged connection; for that purpose a hole is made in its fixed part. Also there possible is fuel system design version where greasing of hinged connection of movable section of pressurisation pipeline is performed in the same way.

EFFECT: providing serviceability of fuel system after long-time storage.

10 cl, 4 dwg