| 摘要 |
<p>A turbine bucket (66) includes a radially inner mounting portion, a shank (82) radially outward of the mounting portion, a radially outer airfoil (68) and a substantially planar platform (80) radially between the shank (82) and the airfoil (68). At least one axially-extending angel wing seal flange (84) is formed on a leading end of the shank (82) thus forming a circumferentially extending trench cavity (62) along the leading end of the shank (82), radially between an underside of the platform (80) leading edge and the angel wing seal flange (84). A plurality of substantially radially grooves (100) are formed on a radially outer surface of the angel wing seal flange (84) and extend into the shank (82).</p> |
