Abstract: A rotary regenerative heat exchanger including a supply duct for admitting fluid to an area of a face of the matrix of the heat exchanger bounded by a seal, the supply duct having an outlet covered by a ported distribution plate in which ports are so arranged that the fluid is admitted to the matrix face area bounded by the seal in a predetermined distribution pattern. For example, the ports may be arranged to effect either uniform fluid flow or uniform fluid pressure throughout the matrix face area bounded by the seal.

Abstract: A diffuser for a centrifugal compressor or a nozzle assembly for a centripetal turbine comprising a pair of axially-spaced walls defining an annular housing open at its inner and outer peripheries and a plurality of vanes extending between the walls and defining therewith, between adjacent vanes, working fluid passages open to the inner and outer peripheries of the housing, each vane being defined by a pair of partitions having a common edge extending between the housing walls adjacent the inner periphery of the housing and spaced apart circumferentially at positions remote from the inner periphery of the housing.

Abstract: A stator vane assembly for a compressor or turbine of a gas turbine engine. The stator vane assembly comprises a plurality of circumferentially-spaced stator vanes extending in a generally radial direction between radially spaced co-axial annular walls mounted co-axially on a rotor of the compressor or turbine. The vanes are flexible and are engaged at at least one position in the radial length thereof by an axially movable annular vane-deflecting member, whereby the vanes are deflectable in cross-sectional shape depending upon the axial position of the vane-deflecting member.

Abstract: A regenerative heat exchanger particularly for a gas turbine engine in which there is a stationary heat-storing matrix in each of the flow-paths for the fluids between which heat exchange is to take place and at least one valve member defining a common wall between the flow-paths and movable between two extreme operable positions, in one of which one of the fluids passes through one of the flow-paths and the matrix associated therewith and the other of the fluids passes through the other of the flow-paths and the matrix associated therewith and in the other extreme position the fluid flow through the respective flow-paths is interchanged.

Abstract: A mounting particularly for attaching a tubular nozzle shroud member of a gas turbine in co-axial registration with an aperture in a supporting wall comprising a spigot at the end of the tubular member to be fitted into the aperture, the spigot being of complementary shape to the aperture and having radially outwardly extending lugs spaced apart around its periphery, and the wall having a corresponding number of notches spaced apart around the periphery of the aperture, the lugs being aligned with the notches and inserted through the latter by axial movement of the tubular member and retained, in the manner of a bayonet-type of coupling, by the portions of the wall between the notches when the tubular member has been partly turned about its longitudinal axis, the tubular member also having a flange spaced axially from the lugs and sealingly engaged with the wall when the lugs are located behind said wall portions, to hold the tubular member from axial movement with respect to the wall, the wall and the flange