公开(公告)号：US20190323355A1

公开(公告)日：2019-10-24

申请号：US16393137

申请日：2019-04-24

Applicant: ROLLS-ROYCE plc

Inventor： Shahrokh SHAHPAR ,  John COULL ,  Matthew SYMES

IPC: F01D5/14 ,  F01D9/04

Abstract: A combustion chamber arrangement includes an annular combustion chamber, a plurality of lean burn fuel injectors and a stage of turbine nozzle guide vanes. The stage of turbine nozzle guide vanes is arranged at the downstream end of the annular combustion chamber and includes a plurality of circumferentially spaced vanes extending between and being secured to an annular inner wall and an annular outer wall. The annular inner wall has an outer surface which has a plurality of outer surface portions and each portion is positioned between a pair of circumferentially adjacent vanes and the annular outer wall has an inner surface which has a plurality of inner surface portions and each portion is positioned between a pair of circumferentially adjacent vanes.