Abstract: An aircraft includes a first tank and a second tank each storing low-temperature liquid fuel; a pump that receives supply of the low-temperature liquid fuel from the first tank and the second tank; and a controller. Each of the first tank and the second tank is switched between a fuel supply phase of supplying the low-temperature liquid fuel to the pump and a temperature restoring phase of cooling the low-temperature liquid fuel in each of the first tank and the second tank. The controller switches between a first mode where the first tank is in the fuel supply phase and the second tank is in the temperature restoring phase, and a second mode where the first tank is in the temperature restoring phase and the second tank is in the fuel supply phase.

Abstract: A fuel distribution system of a hydrogen aircraft includes a hydrogen fuel tank storing liquid hydrogen, a pressure sensor that measures an internal pressure of the hydrogen fuel tank, fuel distribution piping through which liquid hydrogen is delivered from the hydrogen fuel tank to a predetermined distribution destination, a pump that is disposed in the fuel distribution piping and delivers liquid hydrogen, first return piping including a path, a first regulating valve, and a fuel vaporizer, the path branching from the fuel distribution piping downstream of a disposing position of the pump and returning to the hydrogen fuel tank, the first regulating valve regulating a flow rate or pressure of liquid hydrogen, the fuel vaporizer vaporizing liquid hydrogen, and a controller that controls the first regulating valve and the fuel vaporizer.