Turbine engine annular combustion chamber with alternate fixings

1. A turbine engine annular combustion chamber made up of inner and outer longitudinal walls connected upstream by a transverse chamber bottom and comprising a single-piece cowling covering said chamber bottom, the longitudinal walls each being inserted between corresponding flanges of the chamber bottom and of the cowling, wherein the longitudinal walls, the chamber bottom and the cowling are assembled together by a plurality of first fixings between the longitudinal walls and the chamber bottom alternating with a plurality of second fixings distinct from the first fixings between the longitudinal walls and the cowling, and

wherein said first fixings clamp only said longitudinal walls to said chamber bottom, and said second fixings clamp only said longitudinal walls to said cowling.

2. A chamber according to claim 1 , comprising as many first fixings between the longitudinal walls and the chamber bottom as second fixings between the longitudinal walls and the cowling.

3. A chamber according to claim 2 , wherein the first fixings between the inner longitudinal wall and the chamber bottom are situated opposite the second fixings between the outer longitudinal wall and the cowling, and the second fixings between the inner longitudinal wall and the cowling are situated opposite the first fixings between the outer longitudinal wall and the chamber bottom.

4. A chamber according to claim 1 , wherein the flanges of the chamber bottom comprise notches made in the region of the second fixings between the longitudinal walls and the cowling.

5. A chamber according to claim 4 , wherein the flanges of the cowling comprise notches made in the region of the first fixings between the longitudinal walls and the chamber bottom.

6. A chamber according to claim 5 , wherein each of said first and second fixings includes a bolt and a nut.

7. A chamber according to claim 6 , wherein each of the notches on said chamber bottom and on said cowling has sufficient dimensions to allow passage of the bolt and nut of said first and second fixings.

8. A turbine engine comprising an annular combustion chamber according to claim 1 .

9. A chamber according to claim 1 , wherein each of said first fixings is adjacent and between two of said second fixings and each of said second fixings is adjacent and between two of said first fixings.

10. A turbine engine annular combustion chamber made up of inner and outer longitudinal walls connected upstream by a transverse chamber bottom and comprising a single-piece cowling covering said chamber bottom, the longitudinal walls each being inserted between corresponding flanges of the chamber bottom and of the cowling, wherein the longitudinal walls, the chamber bottom and the cowling are assembled together by a plurality of first fixings between the longitudinal walls and the chamber bottom alternating with a plurality of second fixings distinct from the first fixings between the longitudinal walls and the cowling,

wherein the first fixings between the inner longitudinal wall and the chamber bottom are situated opposite the second fixings between the outer longitudinal wall and the cowling, and the second fixings between the inner longitudinal wall and the cowling are situated opposite the first fixings between the outer longitudinal wall and the chamber bottom.

11. A turbine engine annular combustion chamber made up of inner and outer longitudinal walls connected upstream by a transverse chamber bottom and comprising a single-piece cowling covering said chamber bottom, the longitudinal walls each being inserted between corresponding flanges of the chamber bottom and of the cowling, wherein the longitudinal walls, the chamber bottom and the cowling are assembled together by a plurality of first fixings between the longitudinal walls and the chamber bottom alternating with a plurality of second fixings distinct from the first fixings between the longitudinal walls and the cowling, and

wherein each of said first fixings passes through only said longitudinal walls and said chamber bottom, and wherein each of said second fixings passes through only said longitudinal walls and said cowling.

12. A chamber according to claim 11 , comprising as many first fixings between the longitudinal walls and the chamber bottom as second fixings between the longitudinal walls and the cowling.

13. A chamber according to claim 12 , wherein the first fixings between the inner longitudinal wall and the chamber bottom are situated opposite the second fixings between the outer longitudinal wall and the cowling, and the second fixings between the inner longitudinal wall and the cowling are situated opposite the first fixings between the outer longitudinal wall and the chamber bottom.

14. A chamber according to claim 11 , wherein the flanges of the chamber bottom comprise notches made in the region of the second fixings between the longitudinal walls and the cowling.

15. A chamber according to claim 14 , wherein the flanges of the cowling comprise notches made in the region of the first fixings between the longitudinal walls and the chamber bottom.

16. A chamber according to claim 15 , wherein each of said first and second fixings includes a bolt and a nut.

17. A chamber according to claim 16 , wherein each of the notches on said chamber bottom and on said cowling has sufficient dimensions to allow passage of the bolt and nut of said first and second fixings.

18. A turbine engine comprising an annular combustion chamber according to claim 11 .

19. A chamber according to claim 11 , wherein each of said first fixings is adjacent and between two of said second fixings and each of said second fixings is adjacent and between two of said first fixings.