Abstract: A fluid flow network for feeding fuel to at least one engine (2) of a power plant driving rotation of at least one rotary wing (1) of a rotorcraft. The fluid flow network includes a suction pump (3) for sucking fuel from a feeder tank (5) via a transfer circuit (4). The feeder tank (5) is fed with fuel from a main tank (9) by a transfer circuit (10) including a transfer pump (12). The transfer pump (12) is also a pump for priming the suction pump (3) by means of a feed ejector (15) provided on the feed circuit (4) and immersed in the feeder tank (5).

Abstract: A pressure-filling system (10) for filling a tank (2) and including a pressure-filling valve (11). The pressure-filling system (10) comprises a filling pipe (13) having a first end (13?) that is connected to said pressure-filling valve (11), and a second end (13?) that is connected to a check valve (14) that opens out into said tank (2), said filling pipe (13) being connected to a purge system (20) that opens out into said tank (2) so as to discharge a fluid contained in the filling pipe (13), said filling pipe (13) being connected to a branch pipe (15) that opens out to the open air (100) for dumping excess fluid from a tank in the event of excess pressure in the tank.

Abstract: 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).

Abstract: A pressure-filling system (10) for filling a tank (2) and including a pressure-filling valve (11). The pressure-filling system (10) comprises a filling pipe (13) having a first end (13?) that is connected to said pressure-filling valve (11), and a second end (13?) that is connected to a check valve (14) that opens out into said tank (2), said filling pipe (13) being connected to a purge system (20) that opens out into said tank (2) so as to discharge a fluid contained in the filling pipe (13), said filling pipe (13) being connected to a branch pipe (15) that opens out to the open air (100) for dumping excess fluid from a tank in the event of excess pressure in the tank.

Abstract: A fluid flow network for feeding fuel to at least one engine (2) of a power plant driving rotation of at least one rotary wing (1) of a rotorcraft. The fluid flow network includes a suction pump (3) for sucking fuel from a feeder tank (5) via a transfer circuit (4). The feeder tank (5) is fed with fuel from a main tank (9) by a transfer circuit (10) including a transfer pump (12). The transfer pump (12) is also a pump for priming the suction pump (3) by means of a feed ejector (15) provided on the feed circuit (4) and immersed in the feeder tank (5).

Abstract: 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).