Vacuum-insulated pipe assembly

An aircraft comprising:

• a fuel tank configured to store a cryogenic hydrogen fuel;
• a pump configured to pump the cryogenic hydrogen fuel from the fuel tank;
• an engine configured to convert the cryogenic hydrogen fuel to thrust,
• an outer pipe and an inner pipe within the outer pipe fluidically coupled at one end to the pump and fluidically coupled at an opposite end to the engine, wherein the inner pipe and the outer pipe are concentric along a common central axis, and the outer pipe is spaced from the inner pipe to define a space evacuated to define a vacuum, wherein:
• the outer pipe comprises a first outer pipe section and a second outer pipe section, the first outer pipe section comprises a first outer connector, and the second outer pipe section comprises a second outer connector, the first outer connector is removably connected to the second outer connector at an outer connection interface;
• the inner pipe comprises a first inner pipe section and a second inner pipe section, the first inner pipe section comprises a first inner connector, and the second inner pipe section comprises a second inner connector, the first inner connector is removably connected to the second inner connector at an inner connection interface;
• the inner connection interface is axially offset from the outer connection interface along the common central axis;
• and
• the space extends continuously between the outer pipe and the inner pipe across a region including each of the first outer pipe section, the second outer pipe section, the first inner pipe section and the second inner pipe section.