| 摘要 |
A turbine (18) includes a row of blades (24) each having an integral airfoil (30), platform (32), and dovetail (34). Each platform has opposite first and second side edges (48,50) corresponding with the opposite pressure and suction sides (36,38) of the airfoil. The platform first side edge (48) is radially higher than the platform second side edge (50) continuously between opposite forward and aft edges (52,54) of the platform. In this way, adjacent platforms define a down step (56) therebetween for preventing obstruction of combustion gases flowable downstream thereover. <IMAGE>
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