FUEL COUPLING FOR AN AIRCRAFT FOR IMPROVING THE MOUNTING EFFICIENCY AND RELIABILITY IN THE WORKING OF THE FUEL COUPLING

摘要

PURPOSE: A fuel coupling for an air craft is provided to enable self-eccentricity control in combination to prevent a fault in assembling by mis-alignment and oil leakage and to facilitate combination and disassembly of fuel couplings. CONSTITUTION: A fuel coupling for an air craft comprises a main wing-mounting part(100) installed to a main wing of the air craft; a pylon-mounting part(200) mounted to a pylon of the aircraft; and an outer fuel tank-mounting part(300) mounted to an outer fuel tank combined to the pylon. The main wing-mounting part has a main wing-side circulation pipe(110) and a main wing-side circulation pipe valve(150) elastically supported by a first support spring(160) to open and close an inlet(140) of the main wing-side circulation pipe in the main wing-side circulation pipe. The pylon-mounting part has a pylon-side circulation pipe mounted in the pylon; a first spool(220) mounted to one end of the pylon-side circulation pipe to push the main wing-side circulation pipe valve and open the main wing-side circulation pipe valve; and a pylon-side circulation pipe valve(250) mounted to the other end of the pylon-side circulation pipe and elastically supported by a second support spring(260) to open and close an inlet of the pylon-side circulation pipe. The outer fuel tank-mounting part has an outer fuel tank-side circulation pipe, and a second spool(311) installed to the end of the outer fuel tank-side circulation pipe to push the pylon-side circulation pipe valve and open the pylon-side circulation pipe.