Composite structure and method

Patent metadata

Field	Value
Publication number	US-9638230-B2
Application number	US-201514930214-A
Country	US
Kind code	B2
Filing date	Nov 2, 2015
Priority date	May 16, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A composite part includes a first structural element. The composite part includes a second structural element joined at an intersection with the first structural element to form a fillet. The composite part further includes reinforcement webbing wrapped around the first structural element proximate the fillet.

First claim

What is claimed is:

1. A composite part comprising:
a first structural element;
a second structural element joined at an intersection with the first structural element to form a fillet; and
reinforcement webbing wrapped around the first structural element proximate the fillet.

2. The composite part of claim 1 , wherein the first structural element and the second structural element form an I-shaped beam.

3. The composite part of claim 1 , wherein the first structural element and the second structural element are cured while an inflatable radius filler is positioned at the intersection to form the fillet.

4. The composite part of claim 3 , wherein the inflatable radius filler comprises a tube formed from a deformable material.

5. The composite part of claim 3 , wherein the inflatable radius filler comprises a vacuum bag.

6. The composite part of claim 5 , further comprising a bag carrier positioned in the vacuum bag, wherein the bag carrier is shaped to conform to at least a portion of the fillet.

7. The composite part of claim 6 , further comprising a reinforcement member along a second portion of the fillet, wherein the bag carrier is wrapped in a fabric, wherein the fabric comprises a resin material such that, after curing, the fabric forms the reinforcement member.

8. The composite part of claim 1 , wherein the first structural element comprises a composite material.

9. The composite part of claim 8 , wherein the second structural element comprises the composite material.

10. The composite part of claim 1 , wherein the first structural element and the structural second element form a T-shaped beam.

11. A composite part comprising:
a first structural element;
a second structural element joined at an intersection with the first structural element to define an air-filled fillet at the intersection; and
reinforcement webbing wrapped around, proximate to the air-filled fillet, the first structural element.

12. The composite part of claim 11 , wherein the air-filled fillet has a cross-sectional shape that forms a triangle.

13. The composite part of claim 11 , further comprising a reinforcement member disposed in the air-filled fillet.

14. The composite part of claim 11 , wherein the first structural element and the structural second element form an I-shaped beam.

15. The composite part of claim 11 , wherein the first structural element comprises a composite material.

16. The composite part of claim 15 , wherein the second structural element comprises the composite material.

17. The composite part of claim 11 , wherein the first structural element and the second structural element form a T-shaped beam.

18. The composite part of claim 11 , further comprising a third structural element.

19. The composite part of claim 11 , wherein the first structural element comprises a first structural component and a second structural component, and wherein the air-filled fillet is formed at the intersection of the first structural component, the second structural component, and the second structural element.

Assignees

• Boeing Co

Inventors

• Stawski Stanley W

Classifications

• Y10T403/47

  Molded joint · CPC title

• B32B37/1009

  using vacuum and fluid pressure · CPC title

• B29L2031/3097

  Cosmonautical vehicles; Rockets · CPC title

• B29L2031/3088

  Helicopters · CPC title

• B29L2031/3085

  Wings · CPC title