AIRCRAFT ENGINE FUEL FEED Russian patent published in 2010 - IPC F02C9/26 

FIELD: engines and pumps.

SUBSTANCE: radial-flow pump driven by mechanical coupling with engine has low-pressure inlet part that receives fuel from aircraft fuel circuit and high-pressure outlet part coupled with the circuit of adjustment of flow rate of fuel fed into engine. Device comprises also auxiliary electrically driven pump that has inlet part coupled with aircraft fuel circuit and high-pressure outlet part coupled with the circuit of adjustment of flow rate of fuel fed into engine to have fuel at its outlet at certain minimum pressure. Note here that pressure of fuel fed into said adjustment circuit is the highest among pressures generated at a time by radial-flow pump and auxiliary pump unit.

EFFECT: optimised weight and consumed power.

14 cl, 5 dwg