LINING SHELL CARRYING A MAIN LOAD AND STRUCTURAL COMPONENT HAVING AT LEAST ONE LINING SHELL CARRYING A MAIN LOAD

• US 20130273301A1
• Filed: 01/16/2013
• Published: 10/17/2013
• Est. Priority Date: 07/20/2010
• Status: Abandoned Application

• Current Assignee: Airbus Operations GmbH (Airbus SE)
• Original Assignee: Airbus Operations GmbH (Airbus SE)
• Inventors: Zuardy, Ichwan, Zahlen, Pierre, Herrmann, Axel Siegfried
• Application Number:
  US13/742,679
• Publication Number:
  US 20130273301A1
• Time in Patent Office: Days
• US Class Current: 428/98
• CPC Class Codes: B29D 99/0021 provided with plain or filled structures, e.g. cores, placed between two or more plates or sheets, e.g. in a matrix
• CPC Class Codes: B32B 2266/0214 Materials belonging to B32B27/00
• CPC Class Codes: B32B 2266/04 Inorganic
• CPC Class Codes: B32B 2266/045 Metal
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B32B 2307/54 Yield strength; Tensile strength
• CPC Class Codes: B32B 2307/5825 Tear resistant
• CPC Class Codes: B32B 2605/18 Aircraft
• CPC Class Codes: B32B 2607/00 Walls, panels
• CPC Class Codes: B32B 3/02 characterised by features of form at particular places, e.g. in edge regions non-uniform thickness B32B3/263
• CPC Class Codes: B32B 3/06 for securing layers together; for attaching the product to another member, e.g. to a support , or to another product, e.g. groove/tongue, interlocking
• CPC Class Codes: B32B 3/08 characterised by added members at particular parts layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18
• CPC Class Codes: B32B 3/28 characterised by a layer comprising a deformed thin sheet , i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled B32B29/08 takes precedence
• CPC Class Codes: B32B 3/30 characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs apertured layer B32B3/266; layer with cavities or internal voids B32B3/26
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: B32B 7/04 Interconnection of layers
• CPC Class Codes: B64C 1/12 Construction or attachment of skin panels
• CPC Class Codes: B64C 3/20 Integral or sandwich constructions
• CPC Class Codes: B64C 3/26 Construction, shape, or attachment of separate skins, e.g. panels
• CPC Class Codes: B64D 2045/0085 Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
• CPC Class Codes: B64D 45/00 : Aircraft indicators or protectors not otherwise provided for camouflage F41H3/00
• CPC Class Codes: G01N 19/08 : Detecting presence of flaws or irregularities
• CPC Class Codes: Y10T 428/239 : Complete cover or casing
• CPC Class Codes: Y10T 428/24 : Structurally defined web or sheet [e.g., overall dimension, etc.]
• CPC Class Codes: Y10T 428/24322 : Composite web or sheet
• CPC Class Codes: Y10T 428/249923 : Including interlaminar mechanical fastener

Abstract

The invention relates to a structural component (1) of a flow body, comprising at least one lining shell (B) that carries a main load, said lining shell having a core layer (33) that absorbs shear load and that comprises a plurality of core-layer sections (33a) arranged next to each other in the longitudinal extension of the foam layer, wherein said core-layer sections are connected to each other at the sides lying against each other by a core-layer reinforcement area (37), which extends through the core layer perpendicularly to the longitudinal extension of the core layer (33).

Claims

1. A main-load bearing skin shell for a structural component of a flow body, wherein the skin shell is constructed as a sandwich and comprises an inner skin section, an outer skin section and a shear-force-absorbing core layer situated between said skin sections, which shear-force-absorbing core layer two-dimensionally interconnects the inner and the outer skin section,

characterised in that in the skin shell in the core layer several reinforcement devices are integrated which in each case project through at least 85% of the shear-force-absorbing core layer in their thickness direction in order to improve the crack resistance of the skin shell and/or to improve limitation of existing or arising damage.

2. The main-load bearing skin shell according to claim 1, characterised in that the angle between the longitudinal direction of the respective reinforcement component and the thickness direction of the skin shell at this position is within a range of between 45 degrees and 10 degrees.

3. The main-load bearing skin shell according to claim 1, characterised in that the inner skin section and/or the outer skin section in each case comprise/comprises several skin layers.

4. The main-load bearing skin shell according to claim 1, characterised in that at least part of the reinforcement devices is arranged in such a manner that in each case their ends project through the inner skin section and/or through the outer skin section at least in part.

5. The main-load bearing skin shell according to claim 1, characterised in that reinforcement components in the skin shell are in each case arranged, in each case as reinforcement devices, in groups of reinforcement components, which groups are situated in a volume component of the skin shell, wherein the volume components are arranged one behind the other along a longitudinal direction, wherein each group of a volume component in each case comprises a combination of at least two reinforcement components whose alignments in each case deviate by a maximum of 30 degrees from the thickness direction of the skin shell, and which are arranged in a regular or irregular manner on a centre axis of the volume component.

6. The main-load bearing skin shell according to claim 5, characterised in that at least part of the reinforcement devices comprise pairs of reinforcement components whose reinforcement components in pairs comprise X-shaped orientations when viewed in the direction of the longitudinal extension of the outer edge section of the skin shell.

7. The main-load bearing skin shell according to claim 6, characterised in that a multitude of volume components with a group of reinforcement components are arranged one behind the other along at least one region of the outer edge section.

8. The main-load bearing skin shell according to claim 1, characterised in that reinforcement components at least in part are of a pin-shaped design.

9. The main-load bearing skin shell according to claim 8, characterised in that one end of reinforcement components in each comprises a foot-like widened part.

10. The main-load bearing skin shell according to claim 1, characterised in that reinforcement components are of a needle-shaped design.

11. The main-load bearing skin shell according to claim 1, characterised in that reinforcement components of a reinforcement device are at least in part of a plate-shaped design.

12. The main-load bearing skin shell according to claim 11, characterised in that plate-shaped reinforcement components of a reinforcement device are arranged so as to engage each other.

13. The main-load bearing skin shell according to claim 1, characterised in that the shear-force-absorbing core layer in the end region of the core layer comprises a foam.

14. The main-load bearing skin shell according to claim 1, characterised in that the shear-force-absorbing core layer comprises several core-layer sections that are arranged one beside the other in the longitudinal extension of the foam layer, which core-layer sections in each case on the contacting sides are interconnected by a core layer reinforcement region that extends across the longitudinal direction of the core layer through said core layer, wherein the reinforcement region comprises a material that provides at least twice the stiffness of the shear-force-absorbing core layer.

15. The main-load bearing skin shell according to claim 14, characterised in that the core-layer reinforcement region comprises resin.

16. The main-load bearing skin shell according to claim 14, characterised in that in each case several reinforcement components at least in part project through the reinforcement region.

17. The main-load bearing skin shell according to claim 16, characterised in that one end of reinforcement components has been inserted in the reinforcement region while the remaining region extends in the shear-force-absorbing core layer.

18. The main-load bearing skin shell according to any one of claim 14, characterised in that along a surrounding region of a multitude of core-layer reinforcement regions in the shear-force-absorbing core layer of the skin shell reinforcement devices are integrated.

19. The main-load bearing skin shell according to claim 14, characterised in that the surrounding region for the arrangement of the reinforcement devices on both sides of the core-layer reinforcement region extends up to a distance of a maximum of ten times the thickness of the skin shell at the respective position of the core-layer reinforcement region.

20. The main-load bearing skin shell according to claim 14, characterised in that several rows of reinforcement components are arranged one behind the other in the longitudinal direction along a surrounding region of at least one core-layer reinforcement region, wherein the rows of reinforcement components are arranged in such a manner that their reinforcement components mesh when viewed in the direction of the longitudinal extension of the outer edge section of the skin shell.

21. A structural component of a flow body with at least one main-load bearing skin shell according to any one of claim 1 and a support structure for the attachment of the skin shell.

22. The structural component according to claim 21, characterised in that the support structure comprises at least two support components, each extending along a longitudinal direction of the structural component, and at least one rib arrangement, extending between and across said support components and along their longitudinal direction connected to the skin shell (B), for two-dimensionally supporting the skin shell on the support structure.

23. A flow body with a structural component and a main-load bearing skin shell (B) which at least in some regions envelops said structural component, wherein the skin shell (B) is designed according to claim 1.