SINGLE-CRYSTAL TURBINE BLADE, TURBOMACHINE MODULE AND TURBOMACHINE Russian patent published in 2013 - IPC F01D5/14 

FIELD: machine building.

SUBSTANCE: single-crystal blade of turbine impeller is manufactured by casting with directionally crystallisation and comprises a blade airfoil, an end structural component of the blade airfoil and a transition zone. The blade airfoil consists of leading and back edges, sides of C-tray and C-back, centre line and longitudinal axis. The end structural element of the blade airfoil comprises the end side of the blade airfoil on the side of the gas-air path with the end side forming an angle to the longitudinal axis of the blade airfoil. The transition zone is located between the blade airfoil and the end side of the blade airfoil and provides for the blade airfoil bulb. The transition zone stretches around the leading edge between the point placed at the blade airfoil back and at the end side of the above end structural element upstream in relation to the C-back and the point placed at the blade airfoil tray and at the end side of the above end structural element upstream in relation to the C-tray. Other inventions of the group relate to a turbomachine module and a turbomachine comprising the above mentioned blades.

EFFECT: inventions allow for increasing service life of single-crystal turbine blade.

14 cl, 7 dwg