Architecture for feeding fuel to a power plant for driving a rotary wing of a rotorcraft

摘要

An architecture for feeding fuel to a power plant (1) of a rotorcraft, which power plant comprises a plurality of engines (2, 3) individually fed with fuel by respective assemblies (4, 5). Each assembly (4, 5) comprises a fuel feed circuit (9, 10) for feeding a safe tank (6, 7) from a fuel tank (8) that is common to the assemblies (4, 5). Together the feed circuits (9, 10) form a circuit for forced both-way transfer of fuel from either one of the assemblies to the other via the common tank (8) and an intercommunication (21) interposed between the safe tanks (6, 7), which safe tanks are fitted with respective spillage devices (17, 18, 19, 20) for transferring excess fuel to the common tank (8).

主权项

1. Rotorcraft equipment constituted by an architecture for feeding fuel to a power plant comprising a plurality of engines for driving at least one rotary wing of the rotorcraft in rotation, the architecture comprising:
fuel feed assemblies that are allocated to supplying fuel to respective engines;
each assembly comprising a fuel tank and a safe tank that is fed with fuel from the fuel tank by a feed circuit;the feed circuit including at least one feed pump dipping into the safe tank and at least one ejector dipping into the fuel tank, the feed pump taking fuel from capture and delivery of the fuel by the ejector, and driving the fuel into the feed circuit so that it flows from the fuel tank towards the safe tank; andthe safe tank being provided with a spillage device enabling excess fuel therein to be emptied spontaneously therefrom; a supply circuit for supplying fuel from the safe tank to the engine with which the assembly is associated, the supply circuit including at least one supply pump that causes fuel to flow within the supply circuit from the safe tank to the engine; an intercommunication that is interposed between the assemblies and that forms an excess fuel spillway from one of the assemblies to the other; and a transfer circuit for forced transfer of fuel from one of the assemblies to the other, the transfer circuit including at least one transfer pump for delivering both-way flow of fuel selectively from one of the assemblies to the other; wherein the fuel tank included in each of the assemblies is at least one tank common to both assemblies, the ejectors of the feed circuits included in each of the assemblies dipping into the common tank.