A DUCTING ARRANGEMENT FOR DIRECTING COMBUSTION GAS

摘要

A ducting arrangement (10), including: an annular duct (38) having a plurality of discrete IEPs (18) secured together to form the annular duct that defines an annular chamber (14) configured to deliver an annular flow of combustion gases directly onto turbine blades without a turning vane, wherein the annular duct defines a chamber mid-annulus (98); an IEP intermediate portion (34) for each IEP, each IEP intermediate portion defining a respective intermediate flow path (48) in fluid communication with the annular chamber and defining an intermediate flow path axis (192); and a cone (16) for each IEP intermediate portion, each cone defining a cone flow path (46), the cone flow path defining a cone flow path axis (190). When viewed from upstream toward downstream along a longitudinal axis (134) of the gas turbine engine each cone flow path axis intersects a respective intermediate flow path axis (192).