Fuel conditioning system and method configured to power an aircraft turbine engine using fuel from a cryogenic tank

A fuel conditioning system configured to supply an aircraft turbine engine of an aircraft with a fuel from a cryogenic tank, the fuel conditioning system being separate from the aircraft turbine engine, which has a combustion chamber, and wherein the fuel conditioning system comprising:

• at least one pumping turbomachine comprising a pump and a turbine connected to the pump to drive the pump, the pump being configured to take fuel from the cryogenic tank and circulate the fuel in a fuel circuit comprising a supply outlet for supplying the fuel, after passing through the at least one pumping turbomachine, to the aircraft turbine engine, the turbine of the at least one pumping turbomachine being mounted in the fuel circuit so as to be rotationally driven by circulation of the fuel,
• a first heat exchanger, mounted upstream of the turbine of the at least one pumping turbomachine, configured to heat the fuel in the fuel circuit by circulating an air flow across the first heat exchanger, the first heat exchanger being spaced from the aircraft turbine engine,
• at least one heating turbomachine in fluid communication with first heat exchanger to supply the first heat exchanger with the air flow, the at least one heating turbomachine comprising an air intake compressor, a combustion chamber, and an air exhaust turbine configured to drive the air intake compressor via a first shaft, the combustion chamber connected to the fuel circuit to receive fuel from the fuel circuit and connected to the air intake compressor to receive air flow from the air intake compressor, and wherein the least one heating turbomachine is spaced from the aircraft turbine engine, and
• a free turbine arranged to receive air flow from the air exhaust turbine to drive an electrical generator via a second shaft that is spaced from the first shaft, the electrical generator is configured to generate electrical energy for non-propulsive functions of the aircraft.