IP Library Granted Patent US 9,662,841
Granted Patent B2
US 9,662,841 · App. 12/615,980 · Granted May 30, 2017

Radially extending composite structures

Inventors: Christopher J. Madsen (Ogden, UT); Eric McNabb (Syracuse, UT); John B. Healey (South Weber, UT); Todd Rosevear (Taylorsville, UT)
Assignee: Orbital ATK, Inc.
B29C70/32B29C70/207B29C70/34Y10T156/1043Y10T428/13
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Quick Facts
Patent No.
US 9,662,841
App. No.
12/615,980
Granted
May 30, 2017
Kind
B2
Abstract

A composite structure having at least one radially extending part is provided. The composite structure is formed with ply layers. At least one of the ply layers used to form the radially extending part has fibers oriented at an angle offset from an edge of the at least one ply layer.

Claims (33)

1. A composite structure produced by an at least partially automated layup process, the composite structure comprising:

a cylindrical portion extending in an axial direction around a centerline;

at least one flange portion exhibiting a substantially elliptical shape, the at least one flange portion extending and positioned radially outward from one side portion of the cylindrical portion in a direction along an axis substantially perpendicular to the centerline of the cylindrical portion, the cylindrical portion having a different geometry than the at least one flange portion; and

at least one continuous ply layer comprising a plurality of flags each comprising fibers and a matrix material, the plurality of flags each being positioned adjacent another flag of the plurality of flags to define the at least one continuous ply layer having the fibers oriented at an angle offset from an edge of the at least one continuous ply layer, wherein the fibers of each flag of the plurality of flags of the at least one continuous ply layer are oriented at the same angle, the fibers of the at least one continuous ply layer being substantially evenly placed relative to adjacent fibers along a length of the fibers on the cylindrical portion, the at least one continuous ply layer extending continuously from the cylindrical portion, over an interface between the cylindrical portion and the at least one flange portion, and along the at least one flange portion.

2. The composite structure of claim 1 , wherein the fibers of the at least one continuous ply layer are oriented at +17.5 to +27.5 degrees in relation to the edge of the at least one continuous ply layer.

3. The composite structure of claim 1 , wherein the fibers of the at least one continuous ply layer are oriented −22.5 degrees in relation to the edge of the at least one continuous ply layer.

4. The composite structure of claim 1 , wherein the at least one continuous ply layer is a plurality of ply layers having alternating orientations of fiber oriented at +22.5 degrees and −22.5 degrees in relation to an edge of a respective continuous ply layer of the plurality of ply layers.

5. The composite structure of claim 1 , wherein the at least one continuous ply layer comprises a fabric layer, wherein the fibers of fabric layer are oriented at 17.5 to 27.5 degrees in relation to the edge of the at least one continuous ply layer, and wherein the fabric layer comprises additional fibers oriented at 107.5 to 117.5 degrees in relation to the edge of the at least one continuous ply layer.

6. The composite structure of claim 1 , wherein the at least one continuous ply layer is a plurality of continuous ply layers with at least some of the plurality of continuous ply layers having differing fiber orientations.

7. The composite structure of claim 1 , wherein the fibers of the at least one continuous ply layer are oriented at +/−17.5 to +/−27.5 degrees in relation to the edge of the at least one continuous ply layer.

8. The composite structure of claim 1 , wherein the fibers of the at least one continuous ply layer are oriented at 62.5 to 72.5 degrees in relation to the edge of the at least one continuous ply layer.

9. The composite structure of claim 1 , wherein the fibers of the at least one continuous ply layer are oriented at −62.5 to −72.5 degrees in relation to the edge of the at least one continuous ply layer.

10. The composite structure of claim 1 , wherein the at least one continuous ply layer comprises a fabric having a first set of fibers and a second set of fibers, the first set of fibers and the second set of fibers having different orientations that are offset 90 degrees from each other.

11. The composite structure of claim 10 , wherein the first set of fibers have a fiber orientation of 17.5 to 27.5 degrees in relation to the edge of the at least one continuous ply layer and the second set of fibers have a fiber orientation of 107.5 to 117.5 degrees in relation to the edge of the at least one continuous ply layer.

12. The composite structure of claim 11 , further comprising at least one other ply layer comprising a fabric having a third set of fibers and a fourth set of fibers, the third set of fibers and the fourth set of fibers having different orientations that are offset 90 degrees from each other.

13. The composite structure of claim 12 , wherein the third set of fibers have a fiber orientation of −17.5 to −27.5 degrees in relation to an edge of the at least one other ply layer and the fourth set of fibers have a fiber orientation of 62.5 to 72.5 degrees in relation to the edge of the at least one other ply layer.

14. The composite structure of claim 1 , wherein at least one flag of the plurality of flags does not overlap with an adjacent flag of the plurality of flags.

15. The composite structure of claim 1 , wherein each flag of the plurality of flags overlaps with at least one adjacent flag of the plurality of flags.

16. The composite structure of claim 1 , wherein each flag of the plurality of flags is butt-spliced with at least one adjacent flag of the plurality of flags.

17. The composite structure of claim 1 , wherein the cylindrical portion comprises an elliptical cross section.

18. A composite structure comprising:

a cylindrical portion extending in an axial direction about a centerline; and

at least one radially extending part extending outward from one side portion of the cylindrical portion in a direction along an axis substantially perpendicular to the centerline of the cylindrical portion, the cylindrical portion having a different geometry than the at least one radially extending part, the cylindrical portion and the at least one radially extending part including at least one continuous ply layer having fibers oriented at an angle offset from an edge of the at least one continuous ply layer, the at least one continuous ply layer comprising a plurality of flags each comprising fibers, the plurality of flags each being positioned adjacent another flag of the plurality of flags to define the at least one continuous ply layer, the at least one continuous ply layer extending from the cylindrical portion to the at least one radially extending part, wherein the fibers of the at least one continuous ply layer extend continuously along the at least one radially extending part such that spacing between the fibers in a portion of the at least one continuous ply layer on the at least one radially extending part gradually increases and expands as the at least one continuous ply layer extends toward a radially outer edge of the at least one radially extending part.

19. The composite structure of claim 18 , wherein the fibers of the at least one continuous ply layer are oriented at 17.5 to 27.5 degrees in relation to the edge of the at least one continuous ply layer.

20. The composite structure of claim 18 , wherein the at least one continuous ply layer extends continuously along the cylindrical portion and the at least one radially extending part without the area within the outer edges of each flag of the plurality of flags of the at least one continuous ply layer having been cut before or during layup of the at least one continuous ply layer to form the composite structure.

21. A composite structure comprising:

a first portion extending around a centerline; and

a radially extending part extending outward from at least one end of the first portion in a direction along an axis transverse to the centerline of the first portion, the first portion having a different geometry than the radially extending part, the first portion and the radially extending part including at least one continuous ply layer having fibers therein, the at least one continuous ply layer comprising at least two flags each comprising fibers, at least one flag of the at least two flags being positioned adjacent another flag of the at least two flags to define the at least one continuous ply layer, the at least one continuous ply layer extending continuously from the first portion to the radially extending part, wherein the at least one continuous ply layer extends continuously along the radially extending part to an outer edge of the radially extending part, and wherein relative spacing of the fibers in the at least one continuous ply layer in the at least one radially extending part gradually increases as the at least one continuous ply layer extends toward a radially outer edge of the at least one radially extending part.

22. The composite structure of claim 21 , wherein the first portion exhibits a cylindrical shape.

23. The composite structure of claim 21 , further comprising another radially extending part extending outward from another end of the first portion in the direction along the axis transverse to the centerline of the first portion.

24. A composite structure comprising:

a portion of a cylinder extending in an axial direction around a centerline; and

at least one flange portion extending radially outward from at least one side portion of the portion of the cylinder in a direction along an axis transverse to the centerline of the portion of the cylinder, the portion of the cylinder having a different geometry than the at least one flange portion, the portion of the cylinder and the at least one flange portion including at least one continuous ply layer having fibers oriented at an angle offset from an edge of the at least one continuous ply layer, the at least one continuous ply layer comprising a plurality of flags each comprising fibers, at least one flag of the plurality of flags being positioned adjacent another flag of the plurality of flags to define the at least one continuous ply layer, wherein the at least one continuous ply layer extends continuously along the portion of the cylinder and the at least one flange portion without the at least one continuous ply layer having been cut during layup of the at least one continuous ply layer to form the composite structure.

Assignments (10)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 8, 2021
From: NORTHROP GRUMMAN INNOVATION SYSTEMS LLC
To: NORTHROP GRUMMAN SYSTEMS CORPORATION
Reel/Frame 055256/0892 →
CHANGE OF NAME Recorded Feb 4, 2021
From: NORTHROP GRUMMAN INNOVATION SYSTEMS, INC.
To: NORTHROP GRUMMAN INNOVATION SYSTEMS LLC
Reel/Frame 055223/0425 →
CHANGE OF NAME Recorded Nov 1, 2018
From: ORBITAL ATK, INC.
To: NORTHROP GRUMMAN INNOVATION SYSTEMS, INC.
Reel/Frame 047400/0381 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jun 6, 2018
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
To: ORBITAL ATK, INC.
Reel/Frame 046477/0874 →
RELEASE OF SECURITY INTEREST Recorded Oct 8, 2015
From: BANK OF AMERICA, N.A.
To: ALLIANT TECHSYSTEMS INC.; FEDERAL CARTRIDGE CO.; EAGLE INDUSTRIES UNLIMITED, INC.; AMMUNITION ACCESSORIES, INC.; ORBITAL ATK, INC. (F/K/A ALLIANT TECHSYSTEMS INC.)
Reel/Frame 036816/0624 →
SECURITY AGREEMENT Recorded Sep 30, 2015
From: ORBITAL ATK, INC.; ORBITAL SCIENCES CORPORATION
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 036732/0170 →
CHANGE OF NAME Recorded May 22, 2015
From: ALLIANT TECHSYSTEMS INC.
To: ORBITAL ATK, INC.
Reel/Frame 035752/0471 →
SECURITY AGREEMENT Recorded Nov 26, 2013
From: ALLIANT TECHSYSTEMS INC.; CALIBER COMPANY; EAGLE INDUSTRIES UNLIMITED, INC.; FEDERAL CARTRIDGE COMPANY; SAVAGE ARMS, INC.; SAVAGE RANGE SYSTEMS, INC.; SAVAGE SPORTS CORPORATION
To: BANK OF AMERICA, N.A.
Reel/Frame 031731/0281 →
SECURITY AGREEMENT Recorded Nov 4, 2010
From: ALLIANT TECHSYSTEMS INC.; AMMUNITION ACCESSORIES INC.; ATK COMMERCIAL AMMUNITION COMPANY INC.; ATK COMMERCIAL AMMUNITION HOLDINGS COMPANY; ATK LAUNCH SYSTEMS INC.; ATK SPACE SYSTEMS INC.; FEDERAL CARTRIDGE COMPANY; EAGLE INDUSTRIES UNLIMITED, INC.; EAGLE MAYAGUEZ, LLC; EAGLE NEW BEDFORD, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 025321/0291 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 12, 2010
From: MADSEN, CHRISTOPHER J.; MCNABB, ERIC; HEALEY, JOHN B.; ROSEVEAR, TODD
To: ALLIANT TECHSYSTEMS INC.
Reel/Frame 023764/0052 →
Continuity (1)
Related Publication 20110111148A1 · May 12, 2011