Abstract: The present invention relates to a method for operating an undulating diaphragm pump comprising an undulating diaphragm and actuating means of the undulating diaphragm electrically powered according to a given frequency or voltage to make the undulating diaphragm oscillate and undulate. According to the invention, the method consists in modifying the electrical supply frequency and/or voltage of the actuating means according to at least one operating parameter, determined in advance, of the undulating diaphragm pump.

Abstract: A method for the circulation of fuel in an aircraft uses at least one diaphragm pump having an undulating diaphragm that can undulate between two flanges, under the action of an actuator, for circulating the fuel between an admission line of the pump and an exhaust line of the pump.

Abstract: The aircraft refuelling equipment (20) of an aircraft comprises a pipework (22) in which a fuel supply line (13) is connected to a plurality of tank supply lines, fuel tanks connected to tank supply lines of the pipework, first valves (24, 25,26) allowing each fuel tank to be disconnected from the fuel supply line, and at least one captor (30) that provides a signal indicative of a pressure or a flow rate. For each of said first valves, a first valve flow parameter can be estimated, using said captor. The equipment further comprises:—at least one actuator associated with each of said first valves, the actuator allowing adjustment of the opening of the associated first valve; and an electronic control unit (ECU) connected to the respective actuator-first valve assemblies and adapted to regulate an opening of the first ECU valves, using respective first valve flow parameter data.

Abstract: The aircraft refuelling equipment (20) of an aircraft comprises a pipework (22) in which a fuel supply line (13) is connected to a plurality of tank supply lines, fuel tanks connected to tank supply lines of the pipework, first valves (24, 25,26) allowing each fuel tank to be disconnected from the fuel supply line, and at least one captor (30) that provides a signal indicative of a pressure or a flow rate. For each of said first valves, a first valve flow parameter can be estimated, using said captor. The equipment further comprises:—at least one actuator associated with each of said first valves, the actuator allowing adjustment of the opening of the associated first valve; and an electronic control unit (ECU) connected to the respective actuator-first valve assemblies and adapted to regulate an opening of the first ECU valves, using respective first valve flow parameter data.