Pressure bulkhead and method for producing a pressure bulkhead

Patent metadata

Field	Value
Publication number	US-10053205-B2
Application number	US-201615082530-A
Country	US
Kind code	B2
Filing date	Mar 28, 2016
Priority date	Apr 1, 2015
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A pressure bulkhead comprises a plurality of material plies arranged one above the other, wherein each material ply contains reinforcing fibers embedded in a matrix material. The reinforcing fibers, in at least one first material ply are oriented in such a manner that their longitudinal axes lie in an angle range of ±2° about a radial direction of the pressure bulkhead.

First claim

The invention claimed is:

1. A pressure bulkhead comprising a plurality of material plies arranged one above the other, wherein each material ply contains reinforcing fibers embedded in a matrix material, wherein substantially all of the reinforcing fibers in at least one first material ply are oriented in such a manner that their longitudinal axes lie in an angle range of ±2° about a radial direction of the pressure bulkhead, and wherein the at least one first material ply comprises a plurality of planar elements which each comprise strip-shaped segments arranged parallel to one another.

2. The pressure bulkhead according to claim 1 , and wherein each strip-shaped segment is oriented in such a manner that its longitudinal axis lies in an angle range of ±2° about the radial direction of the pressure bulkhead.

3. The pressure bulkhead according to claim 1 , wherein the length of the strip-shaped segments forming a planar element decreases in the peripheral direction of the pressure bulkhead, starting from a central axis of the planar element defined by the radial direction of the pressure bulkhead.

4. The pressure bulkhead according to claim 1 , wherein the at least one first material ply further comprises a plurality of planar elements having the shape of a sector of a circle.

5. The pressure bulkhead according to claim 1 , wherein the planar elements of the first material ply comprising strip-shaped segments arranged parallel to one another have edge regions which overlap in the peripheral direction of the pressure bulkhead.

6. The pressure bulkhead according to claim 4 , wherein the planar elements having the shape of a sector of a circle of the first material ply have edge regions which overlap in the peripheral direction of the pressure bulkhead.

7. The pressure bulkhead according to claim 1 , wherein the reinforcing fibers in at least one second material ply are substantially all oriented in such a manner that their longitudinal axes lie in an angle range of from 88 to 92° to the radial direction of the pressure bulkhead.

8. The pressure bulkhead according to claim 7 , wherein the at least one second material ply comprises a plurality of ribbon-shaped planar elements which are arranged concentrically to one another.

9. The pressure bulkhead according to claim 7 , wherein the at least one second material ply contains a plurality of planar elements having the shape of a sector of a circle.

10. The pressure bulkhead according to claim 8 , wherein the ribbon-shaped planar elements of the second material ply have edge regions which overlap in the radial direction of the pressure bulkhead.

11. The pressure bulkhead according to claim 9 , wherein the planar elements having the shape of a sector of a circle of the second material ply have edge regions which overlap in the peripheral direction of the pressure bulkhead.

12. The pressure bulkhead according to claim 1 , wherein the reinforcing fibers in at least one third material ply are oriented in such a manner that their longitudinal axes lie in an angle range of from 15 to 75° to the radial direction of the pressure bulkhead.

13. The pressure bulkhead according to claim 12 , wherein the at least one third material ply comprises a plurality of strip-shaped planar elements, and wherein mutually adjacent strip-shaped planar elements form different angles with the radial direction of the pressure bulkhead.

14. The pressure bulkhead according to claim 12 , wherein the at least one third material ply contains a plurality of planar elements having the shape of a sector of a circle.

15. The pressure bulkhead according to claim 13 , wherein the strip-shaped planar elements of the third material ply have edge regions which overlap in the radial direction of the pressure bulkhead.

16. The pressure bulkhead according to claim 10 , wherein the planar elements having the shape of a sector of a circle of the third material ply have edge regions which overlap in the peripheral direction of the pressure bulkhead.

17. A method for producing a pressure bulkhead in which a plurality of material plies are arranged one above the other, wherein each material ply contains reinforcing fibers embedded in a matrix material, comprising the step of orienting substantially all of the reinforcing fibers in at least one first material ply in such a manner that their longitudinal axes lie in an angle range of ±2° about a radial direction of the pressure bulkhead, wherein the at least one first material ply comprises a plurality of planar elements which each comprise strip-shaped segments arranged parallel to one another.

18. The method according to claim 17 , comprising a further step of orienting substantially all of the reinforcing fibers in at least one second material ply in such a manner that their longitudinal axes lie in an angle range of from 88 to 92° to the radial direction of the pressure bulkhead.

19. The method according to claim 17 , comprising a further step of orienting the reinforcing fibers in at least one third material ply in such a manner that their longitudinal axes lie in an angle range of from 15 to 75° to the radial direction of the pressure bulkhead.

20. A pressure bulkhead comprising a plurality of material plies arranged one above the other, wherein each material ply contains reinforcing fibers embedded in a matrix material, wherein substantially all of the reinforcing fibers in at least one first material ply are oriented in such a manner that their longitudinal axes lie in an angle range of ±2° about a radial direction of the pressure bulkhead, and wherein the at least one first material ply comprises a plurality of planar elements having the shape of a sector of a circle.

Assignees

• Airbus Operations Gmbh

Inventors

• De Jong Claas
• Mueller Markus
• Grase Karim
• Jessrang Matthias
• Konsolke Thomas
• Fiedler Lars
• Bloemhof Jelle

Classifications

• B64F5/00

  Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for · CPC title

• B29C70/202

  arranged in parallel planes or structures of fibres crossing at substantial angles, e.g. cross-moulding compound [XMC] (B29C70/207 takes precedence) · CPC title

• B29C70/30

  Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core · CPC title

• B64C1/10 Primary

  Bulkheads · CPC title

• Y02T50/433

  Cross-Sectional Technologies · mapped topic