Methods of customizing, manufacturing, and repairing a rotor blade using additive manufacturing processes and a rotor blade incorporating the same

Patent metadata

Field	Value
Publication number	US-11629600-B2
Application number	US-202016822716-A
Country	US
Kind code	B2
Filing date	Mar 18, 2020
Priority date	Jul 25, 2017
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

An airfoil member having a root end, a tip end, a leading edge, and a trailing edge, the airfoil member including an upper skin; a lower skin; and a support network having a plurality of interconnected support members in a lattice arrangement and/or a reticulated arrangement, the support network being configured to provide tailored characteristics of the airfoil member. Also provided are methods and systems for repairing an airfoil member.

First claim

What is claimed is:

1. An airfoil member having a root end, a tip end, a leading edge, and a trailing edge, the airfoil member comprising:
an upper skin;
a lower skin; and
a support network having a plurality of interconnected support members in a lattice arrangement, the support network being configured to provide tailored characteristics of the airfoil member;
wherein the support network comprises a plurality of closely compacted portions including a first closely compacted portion, a second closely compacted portion, a third closely compacted portion, and a fourth closely compacted portion;
wherein the plurality of closely compacted portions is adjacent to the leading edge;
wherein the first closely compacted portion has a greater density than each of the second closely compacted portion, the third closely compacted portion, and the fourth closely compacted portion.

2. The airfoil member according to claim 1 , wherein at least one of the upper skin and the lower skin are configured to provide tailored characteristics of the airfoil member.

3. The airfoil member according to claim 1 , wherein the plurality of interconnected support members define a plurality of openings, the plurality of openings comprising at least one of the following shapes: square, triangle, rectangle, pentagon, octagon, and trapezoid.

4. The airfoil member according to claim 1 , wherein the support network comprises an open cell portion, wherein the plurality of closely compacted portions has a greater cell density than the open cell portion.

5. The airfoil member according to claim 1 , wherein the airfoil member is one piece.

6. The airfoil member according to claim 1 , wherein the first closely compacted portion extends up to one-fifth of a chordwise length of the airfoil member.

7. The airfoil member according to claim 1 , wherein the second closely compacted portion is disposed in an upper portion above a chordwise axis of the airfoil member and is adjacent to the upper skin.

8. The airfoil member according to claim 1 , wherein the third closely compacted portion is disposed in a lower portion below a chordwise axis of the airfoil member and is adjacent to the lower skin.

9. The airfoil member according to claim 1 , wherein the fourth closely compacted portion is disposed aft of the first closely compacted portion.

10. The airfoil member according to claim 1 , wherein the density of the fourth closely compacted portion is less than each of the first compacted portion, the second compacted portion, and the third compacted portion.

11. An airfoil member having a root end, a tip end, a leading edge, and a trailing edge, the airfoil member comprising:
an upper skin;
a lower skin; and
a support network having a plurality of interconnected support members in a lattice arrangement, the support network being configured to provide tailored characteristics of the airfoil member;
wherein the support network comprises a plurality of open cell portions in the support network including a first open cell portion, a second open cell portion, a third open cell portion, and a fourth open cell portion;
the first open cell portion is adjacent to the trailing edge and has a density less than each of the second open cell portion, the third open cell portion, and the fourth open cell portion.

12. The airfoil member according to claim 11 , wherein at least one of the upper skin and the lower skin are configured to provide tailored characteristics of the airfoil member.

13. The airfoil member according to claim 11 , wherein the plurality of interconnected support members define a plurality of openings, the plurality of openings comprising at least one of the following shapes: square, triangle, rectangle, pentagon, octagon, and trapezoid.

14. The airfoil member according to claim 11 , wherein the airfoil member is one piece.

Assignees

• Bell Textron Inc
• Textron Innovations Inc

Inventors

• Nissen Jeffrey
• Paulson Jared M
• Chiang Thomas S

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• B23K26/342

  Build-up welding · CPC title

• F05D2240/301

  Cross-sectional characteristics · CPC title

• B23K15/0086

  welding for purposes other than joining, e.g. build-up welding · CPC title