ONBOARD FUEL GAGE-AND-FUEL FLOW RATE METER SYSTEM WITH COMPENSATION FOR TEMPERATURE AND FUEL DIELECTRIC CONSTANT Russian patent published in 2014 - IPC B64D37/00 B64C17/10 

FIELD: instrumentation.

SUBSTANCE: invention relates to aircraft instrumentation and can be used for ground aircraft fuelling control, measurement of aircraft in-flight fuel store, control over transverse aircraft fuel balance and generation of signal of fuel reserved residue. Proposed system comprises fuel parameter pickups arranged inside aircraft fuel tanks. These include level, temperature and dielectric constant pickups and fuel bottom level indicators. Besides, this system includes computer with LH and RH control module, control channels and memory cell related with fuel tank geometry, LH and RH modules of fuel meter and balancing device. Control board incorporates fuel density setter, fuelling control device and indicator. Fuel dielectric constant pickups are arranged level with fuel bottom level indicator. Onboard system computer has inputs to receive extra data from fuel flow rate pickups and aircraft bank and pitch transducers. Fuel data generated by fuel parameter transducers is fed to onboard computer control modules via fuel meter modules. Said data is set by control board. Onboard computer computes fuel flow rate magnitudes in every tank in aircraft on the whole as well as fuel amount different magnitudes in tanks located in symmetry of aircraft both sides.

EFFECT: higher accuracy and reliability under standard and emergent operating conditions.

1 dwg