Abstract: A twin-engined rotorcraft having an installation for feeding fuel to fuel-burning engines of a power plant of the rotorcraft, the engines including main engines suitable individually for driving at least one rotor of the rotorcraft while in flight, and an auxiliary power unit mechanically connected to the rotor while nevertheless being unsuitable on its own for driving it in flight. The auxiliary power unit is fed with fuel by auxiliary pumps drawing fuel from each of main fuel tanks from which the main engines are respectively fed with fuel.

Abstract: A removable coupling device is provided for coupling together two flexible pipes of two tanks, and also provides a fuel storage system. The removable coupling device has two connector seats, with each connector seat being secured to a respective flexible pipe by adhesive bonding. The connector seats are rigid and are assembled mechanically together via at least one screw. The sealing between the connector seats is provided by a gasket.

Abstract: A filter box (10) having at least one main compartment (20) in fluid flow communication with a main tank (6) and with a transfer pump (8) for feeding with fuel, together with at least one secondary compartment (30) in fluid flow communication with a secondary tank (7) and an ejector (9). The box includes one grid (40) per compartment co-operating with a system for moving the grid in translation in order to be extracted from said compartment through a slot (23, 33) present in a bottom (14) of the compartment (20, 30), and a leaktight shutter system (50) for each compartment (20, 30) for preventing fuel escaping from said slot (23, 33) of a compartment (20, 30) in the absence of said grid (40).

Abstract: A twin-engined rotorcraft having an installation for feeding fuel to fuel-burning engines of a power plant of the rotorcraft, the engines including main engines suitable individually for driving at least one rotor of the rotorcraft while in flight, and an auxiliary power unit mechanically connected to the rotor while nevertheless being unsuitable on its own for driving it in flight. The auxiliary power unit is fed with fuel by auxiliary pumps drawing fuel from each of main fuel tanks from which the main engines are respectively fed with fuel.

Abstract: A filter box (10) having at least one main compartment (20) in fluid flow communication with a main tank (6) and with a transfer pump (8) for feeding with fuel, together with at least one secondary compartment (30) in fluid flow communication with a secondary tank (7) and an ejector (9). The box includes one grid (40) per compartment co-operating with a system for moving the grid in translation in order to be extracted from said compartment through a slot (23, 33) present in a bottom (14) of the compartment (20, 30), and a leaktight shutter system (50) for each compartment (20, 30) for preventing fuel escaping from said slot (23, 33) of a compartment (20, 30) in the absence of said grid (40).

Abstract: A mounting device (10c) for mounting a flexible tank (1c) inside a compartment (2c), said fastening device (10c) comprising: a plurality of first fastening elements (11, 11?) secured to said flexible tank (1c), a plurality of second fastening elements (12) secured to said compartment (2c); and at least one cable (13a, 13b). Each cable (13a, 13b) passes through first fastening elements (11, 11?) and through second fastening elements (12) to shape and to mount said flexible tank (1c) inside said compartment (2c). Said mounting device (10c) further comprises at least one reversible tightening means (15a, 15b) for reversibly tightening said cable (13a, 13b), making it possible to tighten and to slacken said cable (13a, 13b).

Abstract: A removable coupling device (50) for coupling together two flexible pipes (11, 21) of two tanks (10, 20), and also provides a fuel storage system. Said removable coupling device (50) comprises two connector seats (51, 52), each connector seat (51, 52) being secured to a respective flexible pipe (11, 21) by adhesive bonding. Said connector seats (51, 52) are rigid and are assembled mechanically together via at least one screw (54). The sealing between said connector seats (51, 52) is provided by a gasket (53).