Aircraft with an integrated energy-absorbing deformation structure and aircraft with such a fuselage

摘要

An aircraft fuselage has an integrated energy-absorbing deformation structure. The fuselage includes annular frames, longitudinal fuselage beams interconnecting the annular frames, and a covering forming a fuselage skin. A lower floor structure is disposed in an interior of the fuselage. The lower floor structure includes a plurality of transverse beams connected to an assigned frame and longitudinal floor beams which interconnect said transverse beams. The deformation structure is formed in a lower fuselage region disposed below the lower floor structure. The deformation structure includes a first inelastically deformable central region and, on a left-hand side and a right-hand side, respective second inelastically deformable regions of greater stiffness in the vertical direction than the central region.

主权项

1. An aircraft fuselage with an integrated energy-absorbing deformation structure, the fuselage comprising:
annular frames; longitudinal fuselage beams interconnecting the annular frames; a covering forming a fuselage skin; a lower floor structure disposed in an interior of the fuselage, the lower floor structure including a plurality of transverse beams and longitudinal floor beams which interconnect said transverse beams, each transverse beam being connected to an assigned frame of the annular frames; a deformation structure formed in a lower fuselage region, the deformation structure including a first inelastically deformable central region and, on a left-hand side and a right-hand side, respective second inelastically deformable regions of greater stiffness in a vertical direction than the central region, each of the second inelastically deformable regions including an extended longitudinal floor beam of the longitudinal floor beams, each extended longitudinal floor beam including an upper region connected to the transverse beams of the lower floor structure and extending downward beyond the transverse beams of the lower floor structure to a lower region that is connected to the annular frames of the fuselage; and a support structure, the support structure extending in a transverse direction of the aircraft and interconnecting the lower region of the extended longitudinal floor beam of the left-hand side second inelastically deformable region with the lower region of the extended longitudinal floor beam of the right-hand side second inelastically deformable region, for force transmission in the transverse direction.