METHOD OF FUEL RESERVE BALANCING IN AIRPLANE WING TANKS DURING GROUND OPERATIONS (VERSIONS) Russian patent published in 2011 - IPC B64C17/10 

FIELD: transportation.

SUBSTANCE: invention refers to aviation, particularly to method of fuel reserve balancing in airplane wing tanks. Method involves balancing by fuel transfer first from central tank and then from the wing tank where fuel amount is larger to the wing tank where fuel amount is less. For that purpose, pump of fuel feed from right wing tank with less fuel to right motor is activated, with fuel feed valves of motors and cross-feed valve in closed position. Fuel is forwarded to active fuel mainline of fuel transfer jet pump from central tank to consumption tank of right wing tank, then fuel is transferred to the right wing tank in amount required to restore balance. Afterwards, if fuel volume in central tank is insufficient to restore balance and fuel is available in wing tanks, fuel is transferred from the left wing tank in ample amount to the right wing tank with smaller fuel reserve. For that purpose, left motor fueling pump is activated in the left wing tank with larger fuel reserve, centralised fuel drain valve is opened, thus connecting left motor fuel feed line with fueling and centralised drain line, with wing tank fueling valves closed. Then right wing tank fueling valve is opened, and fuel is transferred from left to right wing tank until imbalance signal disappears. Fuel transfer from right wing tank with larger fuel reserve to left wing tank with smaller fuel reserve is implemented in the same way.

EFFECT: prevention of transverse imbalance between left and right wing tanks.

4 cl, 1 dwg