IP Library Granted Patent US 8,561,943
Granted Patent B2
US 8,561,943 · App. 13/688,755 · Granted Oct 22, 2013

Truss-shaped engine pylon and method of making same

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Quick Facts
Patent No.
US 8,561,943
App. No.
13/688,755
Granted
Oct 22, 2013
Kind
B2
Abstract

An aircraft engine pylon comprises a top wall, a bottom wall, a left side wall, and a right side wall. The left side wall includes a left truss structure along with a left upper ledge and a left lower ledge. The right side wall includes a right truss structure along with a right upper ledge and a right lower ledge. The top wall is joined with the left upper ledge and the right upper ledge and an upper truss structure is formed in the left upper ledge, the right upper ledge, and the top wall. The bottom wall is joined with the left lower ledge and the right lower ledge and a lower truss structure is formed in the left lower ledge, the right lower ledge, and the bottom wall.

Claims (33)

1. A method of creating an aircraft engine pylon, the method comprising the steps of:

a) forming a top wall to include a mitered surface along each of two opposing edges;

b) forming a bottom wall to include a mitered surface along each of two opposing edges;

c) forming a left side wall to include a mitered surface along each of two opposing edges;

d) forming a right side wall to include a mitered surface along each of two opposing edges;

e) forming a splatter guard adjacent to the mitered surface along at least four edges of the top, bottom, left side, and right side walls;

f) positioning the top, bottom, left side, and right side walls to be joined with one another such that the mitered surfaces of each wall are aligned with the mitered surfaces of the adjacent walls and the splatter guards are positioned in interior corners of the pylon; and

g) joining the top, bottom, left side, and right side walls together such that no material is ejected into the interior of the pylon; and

h) forming wing attachment features and engine attachment features on the pylon.

2. The method of claim 1 , further including the step of removing the splatter guards after the top, bottom, left side, and right side walls are joined together.

3. The method of claim 1 , wherein the top, bottom, left side, and right side walls are joined together using electron-beam welding.

4. The method of claim 1 , wherein after positioning the top, bottom, left side, and right side walls to be joined with one another, each splatter guard blocks a path from the mitered surfaces to the interior of the pylon.

5. A method of creating an aircraft engine pylon, the method comprising the steps of:

a) forming a top wall to include a mitered surface along each of two opposing edges;

b) forming a bottom wall to include a mitered surface along each of two opposing edges;

c) forming a left side wall to include a mitered surface along each of two opposing edges;

d) forming a right side wall to include a mitered surface along each of two opposing edges;

e) positioning the top, bottom, left side, and right side walls to be joined with one another such that the mitered surfaces of each wall are aligned with the mitered surfaces of the adjacent walls; and

f) joining the top, bottom, left side, and right side walls together; and

g) forming wing attachment features and engine attachment features on the pylon.

6. The method of claim 5 , further comprising the step of forming an inner beveled surface along an inner edge and an outer beveled surface along an outer edge of the mitered surfaces of each of the top, bottom, left side, and right side walls before the walls are joined.

7. The method of claim 5 , further comprising the step of forming a truss structure in each of the top, bottom, left side, and right side walls.

8. A method of creating an aircraft engine pylon, the method comprising the steps of:

a) forming a top wall to include a mitered surface along each of two opposing edges;

b) forming a bottom wall to include a mitered surface along each of two opposing edges;

c) forming a left side wall to include a mitered surface along each of two opposing edges;

d) forming a right side wall to include a mitered surface along each of two opposing edges;

e) forming an inner beveled surface along an inner edge and an outer beveled surface along an outer edge of the mitered surfaces of each of the top, bottom, left side, and right side walls;

f) forming a splatter guard adjacent to the mitered surface along at least four edges of the top, bottom, left side, and right side walls;

g) positioning the top, bottom, left side, and right side walls to be joined with one another such that the mitered surfaces of each wall are aligned with the mitered surfaces of the adjacent walls and the splatter guards are positioned in interior corners of the pylon; and

h) joining the top, bottom, left side, and right side walls together at the mitered surfaces such that no material is ejected into the interior of the pylon; and

i) forming wing attachment features and engine attachment features on the pylon.

9. The method of claim 8 , further including the step of removing the splatter guards after the top, bottom, left side, and right side walls are joined together.

Assignments (15)
RELEASE OF SECURITY INTEREST Recorded Dec 11, 2025
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: SPIRIT AEROSYSTEMS, INC.
Reel/Frame 073932/0669 →
RELEASE OF SECURITY INTEREST Recorded Dec 10, 2025
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: SPIRIT AEROSYSTEMS, INC.
Reel/Frame 073900/0356 →
RELEASE OF SECURITY INTEREST Recorded Dec 9, 2025
From: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
To: SPIRIT AEROSYSTEMS, INC.
Reel/Frame 073916/0346 →
SECURITY AGREEMENT Recorded Jul 8, 2024
From: SPIRIT AEROSYSTEMS, INC.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 068217/0456 →
RELEASE OF SECURITY INTEREST Recorded Dec 4, 2023
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
To: SPIRIT AEROSYSTEMS, INC.; SPIRIT AEROSYSTEMS HOLDINGS, INC.; SPIRIT AEROSYSTEMS NORTH CAROLINA, INC.
Reel/Frame 065772/0456 →
SECURITY AGREEMENT (SECOND LIEN NOTES) Recorded Nov 21, 2023
From: SPIRIT AEROSYSTEMS, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Reel/Frame 065659/0585 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Nov 23, 2022
From: SPIRIT AEROSYSTEMS, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 061993/0847 →
RELEASE OF SECURITY INTEREST Recorded Nov 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
To: SPIRIT AEROSYSTEMS, INC.
Reel/Frame 061995/0281 →
RELEASE OF SECURITY INTEREST Recorded Oct 28, 2020
From: BANK OF AMERICA, N.A.
To: SPIRIT AEROSYSTEMS, INC.
Reel/Frame 054230/0578 →
SECURITY INTEREST Recorded Oct 5, 2020
From: SPIRIT AEROSYSTEMS, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 053993/0569 →
SECURITY INTEREST Recorded Oct 5, 2020
From: SPIRIT AEROSYSTEMS, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 053993/0505 →
SECURITY INTEREST Recorded Oct 5, 2020
From: SPIRIT AEROSYSTEMS, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 053983/0350 →
SECURITY INTEREST Recorded Apr 17, 2020
From: SPIRIT AEROSYSTEMS, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 052433/0843 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Feb 24, 2020
From: SPIRIT AEROSYSTEMS, INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 052004/0929 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 29, 2012
From: CROOK, GORDON R.; WEST, RANDALL R.; HUGGINS, GEORGE LARIMORE
To: SPIRIT AEROSYSTEMS, INC.
Reel/Frame 029374/0046 →