Aircraft fuselage and module for absorbing crash energy in a lower deck, used for transporting passengers, of an aircraft

An aircraft comprising an aircraft fuselage for transporting passengers in a lower deck, the aircraft fuselage comprising:

• a fuselage structure which extends along a longitudinal axis and which surrounds an interior compartment;
• an intermediate floor which is fastened to the fuselage structure, wherein the intermediate floor extends horizontally through the interior compartment and divides the interior compartment into an upper deck and a lower deck;
• a support device for supporting the intermediate floor on the fuselage structure, wherein the support device is fastened by an upper end to the intermediate floor and by an opposite, lower end in the lower deck to the fuselage structure;
• the support device comprising a concave form as viewed from the longitudinal axis to the fuselage structure;
• the support device comprising an energy absorption element between the upper end and the lower end;
• and
• the energy absorption element configured such that the energy absorption element is configured to undergo a plastic deformation and, in so doing, absorb an amount of kinetic energy of that part of the fuselage structure which is connected to the lower end of the support device, the plastic deformation and the amount of kinetic energy being such that the fuselage structure is, at the underside of the aircraft fuselage, deformed at most to an extent that a minimum height between a seat surface of passenger seats provided in the lower deck and the intermediate floor is maintained.