# US 8,146,860 B2 · Aircraft fuselage with circular-arc-shaped exterior contour > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,146,860 B2 - Document ID: US8146860B2 - Status: Granted - Kind: B2 - Application number: 12/226,230 - Filed: 2007-04-05 - Published: 2009-12-31 - Granted: 2012-04-03 - Earliest claimed: 2006-04-10 - Assignees: Airbus Operations GmbH - Inventors: Martin Dehn; Ingo Wuggetzer; Ugur Ipek; Christoph Muehlich - Web page: https://patentgrep.com/patent/US8146860B2 ## CPC - B64C 1/0009: {Aerodynamic aspects} - B64C 1/064: {Stringers; Longerons} - B64C 2001/0045: {Fuselages characterised by special shapes} - B64C: AEROPLANES; HELICOPTERS ## Abstract A fuselage section comprises an interior that forms a passenger cabin. In horizontal projection the fuselage section is geometrically defined by a first exterior skin region and a second exterior skin region, wherein the second exterior skin region faces the first exterior skin region. Both the first exterior skin region and the second exterior skin region in longitudinal direction of the passenger cabin comprise in horizontal projection a circular-arc-shaped contour of uniform radius of curvature. ## Claims ### Claim 1 A fuselage section comprising an interior that forms a passenger cabin comprising an interior lining that spans the longitudinal length of the fuselage and which in horizontal projection is geometrically defined by a first exterior skin region and a second exterior skin region, which second exterior skin region faces the first exterior skin region, wherein the two exterior skin regions in longitudinal direction of the passenger cabin comprise a circular-arc-shaped contour of uniform curvature, wherein the interior lining lines at least one of the two facing exterior skin regions, wherein the interior lining in horizontal projection in longitudinal direction of the fuselage comprises a circular arc shape of uniform curvature, and wherein the interior lining is comprised of a plurality of interior lining segments that are designed for using one and the same interior lining segment alternatively for lining the first exterior skin region or the second exterior skin region. ### Claim 2 (depends on 1) The fuselage section of claim 1, wherein each of the two exterior skin regions comprises a plurality of exterior skin segments which in horizontal projection comprise a circular-arc-shaped exterior contour, and wherein the exterior contour of the exterior skin segments coincides with the contour of the fuselage section. ### Claim 3 (depends on 1) The fuselage section of claim 1, wherein the two facing exterior skin regions are curved such that in horizontal projection the fuselage section comprises a biconvex shape at least in some regions. ### Claim 4 (depends on 1) The fuselage section of claim 1, wherein the two facing exterior skin regions are curved such that in horizontal projection the fuselage section comprises a biconcave shape at least in some regions. ### Claim 5 (depends on 1) The fuselage section of claim 1, wherein the interior lining comprises a plurality of interior lining segments which in horizontal projection are in the shape of a circular arc, wherein the curvature of the interior lining segments corresponds to the curvature of the contour of the fuselage section. ### Claim 6 (depends on 5) The fuselage section of claim 5, wherein the interior lining segments comprise components from the group comprising lateral lining, base lining, illumination strip, service panel lining, hatrack and ceiling lining. ### Claim 7 (depends on 1) The fuselage section of claim 1, further comprising: a plurality of stringers which in horizontal projection are shaped in the manner of a circular arc, wherein the curvature of the stringers is uniform, which curvature corresponds to the contour of the exterior skin regions. ### Claim 8 (depends on 1) The fuselage section of claim 1, further comprising: a plurality of lateral fuselage frames of identical dimensions, which lateral fuselage frames in horizontal projection are arranged such that they point in the direction of a common centre of a circle. ### Claim 9 An interior lining for lining an aircraft passenger cabin, the lining comprising, in horizontal projection a geometrically defined first interior lining region and a second interior lining region that faces said first interior lining region, wherein in longitudinal direction of the aircraft passenger cabin the two interior lining regions comprise a circular arc shape of uniform curvature; wherein the interior lining regions comprise a plurality of interior lining segments which in horizontal projection comprise a circular arc shape, wherein the curvature of the interior lining segments corresponds to the curvature of the shape of the interior lining regions; wherein the interior lining segments are designed to be used alternatively for lining a left-hand exterior skin region or a right-hand exterior skin region of an aircraft. ### Claim 10 (depends on 9) The interior lining of claim 9, wherein the two facing interior lining regions are curved such that the aircraft passenger cabin in horizontal projection comprises a biconvex shape at least in some regions. ### Claim 11 (depends on 9) The interior lining of claim 9, wherein the two facing interior lining regions are curved such that the aircraft passenger cabin in horizontal projection comprises a biconcave shape at least in some regions. ### Claim 12 (depends on 9) The interior lining of claim 9, wherein the interior lining segments comprise components from the group comprising lateral lining, base lining, illumination strip, service panel lining, hatrack and ceiling lining. ### Claim 13 A fuselage, which at least in some regions is formed by at least one fuselage section comprising an interior that forms a passenger cabin comprising an interior lining that spans the longitudinal length of the fuselage and which in horizontal projection is geometrically defined by a first exterior skin region and a second exterior skin region, which second exterior skin region faces the first exterior skin region, wherein the two exterior skin regions in longitudinal direction of the passenger cabin comprise a circular-arc-shaped contour of uniform curvature, wherein the interior lining lines at least one of the two facing exterior skin regions. ### Claim 14 (depends on 13) The fuselage of claim 13, wherein the at least one fuselage section comprises two fuselage sections, which two fuselage sections in longitudinal direction of the fuselage are arranged so as to be offset in relation to each other and are connected to each other by a straight-line fuselage section.