Turbomachine blade assembly

1. A system, comprising:

a turbomachine blade assembly, comprising:

a blade portion;

a shank portion; and

a mounting portion, wherein the blade portion, the shank portion, and the mounting portion comprise a first plurality of plies extending from a tip of the blade portion to a base of the mounting portion, and wherein the blade portion comprises a blade cavity configured to contain a pressurized flow from a shank cavity of the turbomachine blade assembly; and

a platform arch disposed about the blade portion, the shank portion, and the mounting portion, wherein the platform arch comprises a platform surface and first and second dovetail portions, wherein the first and second dovetail portions extend axially from the platform surface relative to an axis of the turbomachine blade assembly and abut the mounting portion, and wherein the platform arch comprises a second plurality of plies.

2. The system of claim 1 , wherein each ply of the first plurality of plies comprises a first plurality of ceramic fibers distributed throughout a first ceramic matrix material, and wherein each ply of the second plurality of plies comprises a second plurality of ceramic fibers distributed throughout a second ceramic matrix material.

3. The system of claim 2 , wherein the first plurality of ceramic fibers is oriented along an axis of each ply of the first plurality of plies.

4. The system of claim 2 , wherein the turbomachine blade assembly comprises at least one shank arch disposed on an outer surface of the blade portion and the shank portion, wherein the shank arch comprises a third plurality of plies, each ply of the third plurality of plies comprises a third plurality of ceramic fibers distributed throughout a third ceramic matrix material, and a first amount of the third plurality of ceramic fibers distributed throughout the third ceramic matrix material is greater than a second amount of the first plurality of ceramic fibers distributed throughout the first ceramic matrix material.

5. The system of claim 1 , wherein the first plurality of plies and the second plurality of plies are laminated to one another to form a single piece.

6. The system of claim 1 , wherein the shank portion comprises a pressurization port fluidly coupling the blade cavity and the shank cavity.

7. A system, comprising:

a first turbomachine blade, comprising:

a blade portion comprising a hollow cavity;

a shank portion comprising a pressurization port fluidly coupled to the hollow cavity;

a mounting portion configured to couple the turbomachine blade to a rotor; and

a platform arch comprising a platform surface positioned about the shank portion, wherein the platform arch comprises first and second dovetail portions, and wherein the first and second dovetail portions extend axially from the platform surface relative to an axis of the first turbomachine blade and abut the mounting portion.

8. The system of claim 7 , wherein the pressurization port extends from the hollow cavity to a shank cavity of the first turbomachine blade.

9. The system of claim 8 , comprising a second turbomachine blade disposed adjacent the first turbomachine blade, and a plurality of sealing pins disposed between the first turbomachine blade and the second turbomachine blade, wherein the platform arch comprises at least one recess configured to support at least one sealing pin of the plurality of sealing pins.

10. The system of claim 9 , wherein the plurality of sealing pins comprises at least one vertical sealing pin and at least one horizontal sealing pin relative to the axis of the first turbomachine blade.

11. The system of claim 7 , wherein the first turbomachine blade comprises a platform positioned on the platform surface.

12. The system of claim 11 , wherein the blade portion, the shank portion, and the mounting portion comprise a first plurality of plies, the platform arch comprises a second plurality of plies, and the platform comprises a third plurality of plies.

13. The system of claim 12 , wherein the first plurality of plies, the second plurality of plies, and the third plurality of plies are laminated to one another to form a single piece.

14. The system of claim 12 , comprising a fillet portion extending across the blade portion and the platform, wherein the fillet portion comprises a fourth plurality of plies.

15. The system of claim 13 , wherein each ply of the first, second, and third pluralities of plies comprises a plurality of ceramic fibers distributed throughout a ceramic matrix material.

16. A turbomachine blade assembly, comprising:

a first portion, comprising:

an airfoil portion comprising a hollow cavity;

a shank portion; and

a first dovetail portion;

wherein the first portion comprises a first plurality of plies;

a second portion, comprising:

a platform arch disposed about the first portion, wherein the platform arch comprises a second plurality of plies, wherein the platform arch comprises a platform surface and second and third dovetail portions, wherein the second and third dovetail portions extend axially from the platform surface relative to an axis of the turbomachine blade assembly and abut the first dovetail portion;

a third portion, comprising:

a plurality of angel wings disposed adjacent the platform arch, wherein the plurality of angel wings comprises a third plurality of plies; and

a fourth portion, comprising:

a fillet portion extending over the airfoil portion, wherein the fillet portion comprises a fourth plurality of plies;

wherein the first, second, third, and fourth pluralities of plies are laminated to one another to form a single piece.

17. The system of claim 16 , wherein each ply of the first, second, third, and fourth pluralities of plies comprises a plurality of ceramic fibers distributed throughout a ceramic matrix material.

18. The system of claim 1 , wherein the turbomachine blade assembly comprises a platform disposed on the platform surface of the platform arch, wherein the platform comprises a third plurality of plies.

19. The system of claim 18 , wherein the platform arch is configured to transfer a load on the platform to a rotor having the turbomachine blade assembly.

20. The system of claim 18 , wherein the turbomachine blade assembly comprises first and second angel wings disposed adjacent to the platform arch, wherein the first and second angel wings comprise third and fourth dovetail portions, respectively, wherein the third and fourth dovetail portions are configured to abut the first and second dovetail portions, respectively, of the platform arch, wherein the first and second angel wings comprise first and second lateral platforms, respectively, extending laterally outward from the platform arch, and wherein the first and second angel wings comprise a fourth plurality of plies.

21. The system of claim 7 , wherein the first turbomachine blade comprises at least one shank arch disposed on an outer surface of the shank portion, wherein the blade portion, the shank portion, and the mounting portion comprise a first plurality of plies, wherein each ply of the first plurality of plies comprises a first amount of fibers distributed throughout a first matrix material, wherein the at least one shank arch comprises a second plurality of plies, wherein each ply of the second plurality of plies comprises a second amount of fibers distributed throughout a second matrix material, and wherein the second amount is greater than the first amount.

22. The turbomachine blade assembly of claim 16 , comprising a platform disposed on the platform surface, wherein the platform comprises a fifth plurality of plies, wherein the first, second, third, fourth, and fifth plurality of plies are laminated to one another to form a single piece, and wherein the fillet portion extends over the platform.

23. The turbomachine blade assembly of claim 16 , comprising at least one shank arch disposed on an outer surface of the shank portion, wherein each ply of the first plurality of plies comprises a first amount of fibers distributed throughout a first matrix material, wherein the at least one shank arch comprises a fifth plurality of plies, wherein each ply of the fifth plurality of plies comprises a second amount of fibers distributed throughout a second matrix material, and wherein the second amount is greater than the first amount.