COOLED AIRFOIL, GUIDE VANE, AND METHOD FOR MANUFACTURING THE AIRFOIL AND GUIDE VANE

摘要

Disclosed is a cooled airfoil having a hub end and tip, an airfoil height being defined between the hub end and the tip. The airfoil has a leading edge, trailing edge, suction side and pressure side. The airfoil has a first airfoil height section adjacent the hub end and extending towards the tip, wherein, in a meridional view, the leading edge and trailing edge are straight along the first airfoil height section. The airfoil has a second airfoil height section adjacent the tip and extending towards the hub end, wherein, in a meridional view, the airfoil is concavely shaped at the leading edge and is convexly shaped at the trailing edge along the second airfoil height section. At least one cooling channel has a length principally extending along the airfoil height, extends straight in a first cooling channel length section, and is bent in a second cooling channel length section.

主权项

1. A cooled airfoil, the airfoil comprising:
a hub end and a tip, an airfoil height being defined between the hub end and a tip, a leading edge, a trailing edge, a suction side and a pressure side, a first airfoil height section adjacent the hub end and extending towards the tip, wherein, in a meridional view, the leading edge and the trailing edge are straight along the first airfoil height section a second airfoil height section adjacent the tip and extending towards the hub end, wherein, in a meridional view, the airfoil is concavely shaped at the leading edge and is convexly shaped at the trailing edge along the second airfoil height section, wherein at least one cooling channel is provided within the airfoil and has a length principally extending along the airfoil height, wherein the cooling channel extends straight in a first cooling channel length section and is bent in a second cooling channel length section, and wherein a cooling channel wall provided on the leading edge side is convexly shaped and a cooling channel wall provided on the trailing edge side is concavely shaped.