Method for manufacturing outlet nozzles for rocket engines

1. A wall structure capable of withstanding high thermal load, said wall structure comprising:

a wall structure having an inner wall, an outer wall positioned about said inner wall, and distancing elements located between said inner and outer walls;

said distancing elements being joined to at least one of said inner and outer walls by means of laser welding and thereby establishing a plurality of cooling ducts between said inner and outer walls; and

a weld joint formed by said laser welding and having a cross-section taken through said wall structure that is substantially T-shaped and which displays a rounded shape towards an inside one of said plurality of cooling ducts.

2. The wall structure according to claim 1 , further comprising:

said distancing elements being oriented so as to run substantially at right angles from said inner wall to said outer wall.

3. The wall structure according to claim 1 , further comprising:

said outer wall and said distancing elements having a thickness between about 0.4 and 1.5 mm.

4. The wall structure according to claim 1 , further comprising:

said weld joint having a radius between about 0.4 and 1.5 mm.

5. The wall structure according to claim 1 , further comprising:

said wall structure comprising a portion of an inclusive member adapted to enclose an interior space delimited by said inclusive member.