Patent attributes
A lean burn combustor includes a first wall and a second wall spaced from the first annular wall. Angularly spaced axially extending coolant collection manifolds collect coolant from the space between the first and second walls. A plurality of rows of axially spaced apertures extend through the first wall to supply coolant into the space between the first and second walls and one row of aperture is positioned between each pair of adjacent manifolds. The second wall extends the full length of the combustor. The second wall has a circumferentially extending wall extending towards and contacting the first wall and the wall is spaced from the downstream end of the second wall. An annular supply manifold supplies coolant to the space between the first and second walls downstream of the circumferentially extending wall and the manifolds supply coolant to the manifold. A film of coolant is discharged from the space.
