ROTOR BLADE HAVING A FLARED TIP AND CORRESPONDING GAS TURBINE

摘要

A rotor blade 100 includes an airfoil 106 having a blade tip 120 and a tip cavity 134 formed at the blade tip. The tip cavity 134 includes a tip cap 136 that is recessed radially inwardly from the tip and surrounded continuously by pressure and suction side walls of the airfoil 106. The tip cap 136 further includes an aperture 144 that extends through the tip cap 136 and provides for fluid communication between an internal cavity 132 defined within the airfoil 106 and the tip cavity 134. An exhaust port 150 provides for fluid communication out the tip cavity 134 through one of the pressure side wall, the suction side wall 140 or the trailing edge. A portion of at least one of the suction side wall 140 and the pressure side wall 138 that defines the tip cavity 134 extends obliquely outwardly from the tip cavity 134 with respect to a radial direction.