FUEL MEASUREMENT ELECTRIC-CAPACITY SYSTEM FOR AIRCRAFT Russian patent published in 2010 - IPC B64D37/00 G01F23/00 G01F23/26 

Abstract RU 2382726 C1

FIELD: transportation.

SUBSTANCE: system contains fuel level sensors (3) installed in fuel tank and magnetically operated float fuel level switches (4) as well as the first and the second fuel volume measurement units (6 and 7), fuel mass calculating unit (5) and instrument for determination of fuel surface spatial position (11), fuel density measurement unit (10), fuel density comparator (8) and signal generating unit (9). Additionally, the system includes multisensor (2) of fuel characteristic parametres installed in fuel tank which multisensor contains temperature sensor (18), dielectric permeability sensor (19) and sensor of ultrasound speed (20) in fuel. Fuel level sensor represents electric-capacity level sensor structurally combined with ultrasonic level sensor. Electric-capacity level sensor is made as coaxial cylindrical condenser with internal and external electrodes and fuel level ultrasonic sensor is made as tubular acoustic waveguide. Float acoustic reflector with constant magnets installed in it is used as float of magnetically operated float fuel level switch.

EFFECT: decrease in fuel mass measurement error including the case when fuel tank is filled with mixture of various aircraft fuels or aircraft fuel of unidentified grade.

4 dwg

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RU 2 382 726 C1

Authors

Furmakov Evgenij Fedorovich

Petrov Oleg Fedorovich

Kalygin Igor' Stepanovich

Drjuk Viktor Aleksandrovich

Polivanov Nikolaj Vladimirovich

Dates

2010-02-27Published

2008-07-15Filed