Thin-walled, lightweight cooled turbine blade

摘要

A blade 10 is composed of a front blade portion 10 a, a rear blade portion 10 b and a middle blade portion 10 c. The belly side of the middle blade portion 10 c forms a recess towards the back side. High-temperature gas flowing along the belly side of the blade 10 branches once at the front edge portion to the rear edge portion and alongside the belly side, into separate flows. These separated high-temperature gas flows are merged again at the rear edge portion, thereby a separation region S is formed.