| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotor blade having a reliability improved by reducing the concentration of gas bending stress and thermal stress. <P>SOLUTION: This rotor blade comprises: a blade attaching section 21 and a shank 22 detachable from a rotor; a platform 23 extending from the outer end of the shank 22 in the axial and circumferential directions of the rotor; an aerofoil section 24 extending from the outer peripheral surface of the platform 23 radially outward; a sidewall section 61 extending from the inner peripheral surface of a portion where the platform 23 is joined to the leading edge 51 of the aerofoil section 24 radially inward and in the circumferential direction; a rotor blade side projecting section 62 extending from the radially inward end of the sidewall section 61 in the axial direction of the rotor and extending from the trailing edge to the leading edge 51 of the aerofoil section 24 and in the circumferential direction; and a cutout section 64 which reduces the axial dimension of a connection section between the sidewall section 61 and the platform 23 and which has a groove shape extending along the circumferential direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
