to the blade 58 by means of channel 60 while fluid from the second source is directed to another portion of the same blade by means of channel 62 the channels 60 and 62 are separated by a stationary shroud member 64 in fig7 the turbine 68 with its hub member 70 is provided with a dual section axial blade whose sections are shown at 72 and 74 the blade section 74 receives fluid through channel 76 while the blade section 72 receives the fluid transmitted by channel 78 the two blade sections are separated by a rotating shroud member 80 and the two channels 76 and 78 are separated by means of a rotating labyrinth seal shown at 82 referring now to fig8 there is shown another embodiment of the invention in which a toroidal chamber 84 surrounding a radial turbine is provided with two inlets 86 and 88 for accepting fluids from separate sources in this embodiment the turbine blades of a radial inflow type will be uniform across their span but the fluids will be directed to different radial segments of the turbine thus the fluid entering opening 86 is inducted into the torus along bulkhead 90 and is directed to that portion of.