AIRCRAFT ONBOARD FUEL GAGING AND FLOW-METERING SYSTEM AT TEMPERATURE COMPENSATION Russian patent published in 2008 - IPC B64D37/14 G01F23/26 

FIELD: aircraft instrumentation engineering; measurement of fuel capacity and fuel consumption on board maneuverable aircraft.

SUBSTANCE: proposed system is provided additionally with the following electronic units: bypass unit, return unit, filling unit, replenishing unit and trimming unit. Capacity of fuel filled on ground is determined on basis of information received from said sensors, indicators and counter of system as well as in accordance with commands received from external systems and data on versions of filling, replenishing and return kept in onboard computer storage, comparison unit and filling, replenishing and return units; besides that, present fuel capacity in flight, amount of fuel transferred from aircraft and aerodynamic residue of fuel required for return flight are determined with the aid of this system. Proposed system is also used for control of fuel filling, replenishing and supply operations; system makes it possible to take decision pertaining to return of aircraft from the standpoint of fuel capacity. In case of impairment of lateral CG position of aircraft, trimming unit forms commands for control of trimming transfer of fuel for correcting the aircraft CG position on basis of information received from fuel consumption sensors mounted in trimming lines with the use of data received from onboard computer and comparison unit.

EFFECT: enhanced efficiency and reliability.

1 dwg