TWO-STAGE COMBUSTOR FOR GAS TURBINE ENGINE

摘要

A combustor for a gas turbine engine comprises an inner annular liner wall and an outer annular liner wall cooperating to form a combustion chamber of the combustor. A first dome wall has a circumferential array of first fuel injection bores. A second dome has a circumferential array of second fuel injection bores. An intermediate wall extends between the first dome wall and the second dome wall. A first combustion stage is defined by the inner liner wall forward end, the first dome wall and the intermediate wall. A second combustion stage is defined at least by the outer liner wall forward end, the second dome wall and the intermediate wall, the first combustion stage communicating with the first fuel injection bores, the second combustion stage communicating with the second fuel injection bores.

主权项

1. A combustor for a gas turbine engine, the engine having a central axis, the combustor comprising:
an inner annular liner wall having an axially forward end generally radially oriented, the inner annular liner wall curving into an axial orientation as it extends in an aft direction to an axially aft end of the inner liner; an outer annular liner wall having an axially forward end generally radially oriented, the outer annular liner wall curving into an axial orientation as it extends in an aft direction to an axially aft end of the outer liner, with the inner annular liner wall and the outer annular liner wall spaced apart and cooperating to form a combustion chamber of the combustor; a first dome wall extending generally axially adjacent to the inner annular liner wall and circumscribing the forward end on the inner liner, the first dome wall having a circumferential array of first fuel injection bores radially extending through the first dome wall; a second dome wall extending generally axially adjacent to the outer annular liner wall and circumscribing the forward end of the outer liner, the second dome wall having a circumferential array of second fuel injection bores radially extending through the second dome wall; and an intermediate wall extending between the first dome wall and the second dome wall and being an intermediate single annular wall, a first combustion stage defined at least by the inner liner wall forward end, the first dome wall and the intermediate wall, a second combustion stage defined at least by the outer liner wall forward end, the second dome wall and the intermediate wall, the first combustion stage communicating with the first fuel injection bores, the second combustion stage communicating with the second fuel injection bores.