A combustion chamber assembly

A combustion chamber assembly (16) Fig 2 comprises a plurality of tubular combustion chambers 36 which have their axes arranged generally radially. A transition duct 56 is provided for each of the tubular combustion chambers (30). Each transition duct 56 has a circular upstream end 58 arranged coaxially with the downstream end 40 of the respective tubular combustion chamber 36. An annular resilient member 78 mounts the upstream end 58 of the respective transition duct 56 on a tubular portion 64 of a respective support structure 62. The inner end of the annular member 78 is formed integrally with the upstream end 58 of the transition duct 56 and the outer end of the annular member 78 is secured to a flange 90 on the tubular portion 64 of the support structure 62 by a bolted 96, 98 connection. The annular member 78 has a plurality of circumferentially extending slots 80 to allow thermally induced articulation and to maintain the upstream end 58 of the transition duct 56 coaxial with the support member 64.