SYSTEM OF SEALED FUELING WITH LIQUID FUEL AND SYSTEM TO THIS END Russian patent published in 2013 - IPC B64F1/00 

FIELD: transport.

SUBSTANCE: invention relates to sealed fueling of drone operated with sealed fuel tank. In fueling drone bubbling fuel tank fuel is saturated with gas by forcing it at overpressure into fuel via bubbling device at appropriate gas pressure inside bubbling tank and fueling fuel tank by refueller from babbling tank. Note here that fuel tank gas chamber is pressurised to saturation pressure and sealed. Fuel is saturated with nitrogen or hydrocarbon combustible gas. Proposed system comprises fuel reservoir with fuel intake line, fuel tank, fueling-draining device and refueller. Besides it comprises saturation gas feed device and bubbling chamber for fuel amount to be fed equipped with fueling assembly, bubbling device and safety valve. Also, it is equipped with compressor with its inlet communicated with bubbling tank top section and its outlet communicated with saturation gas feed line downstream of hydraulic control valve.

EFFECT: ruled out vacuum inside fuel tank in operation, increased operating loads, fuel tank development possibilities.

6 cl, 1 dwg