A fuel boost pump assembly 100 (200, 300) for an aircraft, comprising a first inlet 101 (201, 301) receiving a first pressurised fuel flow, a pump 110 (210, 310) for transferring fuel between a second inlet 102 (202,302) and assembly outlet 103 (203, 303), a hydraulic motor (120, 220, 320) fluidly connected between the first inlet and the assembly outlet. The hydraulic motor is mechanically coupled to and adapted to drive the pump, e.g. via a shaft 130 (230, 330). The hydraulic motor converts the hydraulic energy of the first pressurised fuel flow into driving energy of the pump. The pump generates a second pressurised fuel flow between the second inlet and the assembly outlet. The pump may comprise an impeller 111 (211, 311). The hydraulic motor may comprise a Francis turbine 122, a Tesla turbine (222, figure 4), or gear motor (322, figure 6).
A fuel boost pump assembly for an aircraft
2019-11-13
Patent
Elektronische Ressource
Englisch
IPC: | F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS , Rotationskolben- oder Schwenkkolbenmaschinen [Kraft- und Arbeitsmaschinen] für Flüssigkeiten / F23K Brennstoffzufuhr zu Feuerungen , FEEDING FUEL TO COMBUSTION APPARATUS |