BLADE FOR RUNNING MACHINE Russian patent published in 2009 - IPC F01D5/14 F01D9/02 

FIELD: mechanical engineering.

SUBSTANCE: blade for application in running machine, subjected to influence during operation of machine upon high-speed gas flow, allows leading edge, directed to the side of oncoming gas flow, and trailing edge. Leading edge allows concave section, providing during the operation process formation of braking area of oncoming gas flow at certain distance before external surface of blade, where it is formed concave section, protecting this surface against oncoming gas flow. Blade allows the first and the second side walls, connected to formation of joint, located inside the concave section. Section of running machine unit contains the first and the second half of blade, mutually spaced from each other for formation of parts of two adjacent blades of node with formation of passage for gas flow. Each of blades' halves allows leading edge, directed to the side of gas flow, oncoming during the running machine operation and trailing edge. Leading edge of each half of blade allows concave section, implemented so that blade, formed in the node from two halves of blades from adjoining sections, forms braking area of oncoming gas flow at certain distance before external surface of blade, where it is formed concave section, protecting it against oncoming gas flow.

EFFECT: invention is directed to minimisation of leading edge influence upon blade's aerodynamics, reduction of tensions, to there is subject leading edge.

18 cl, 7 dwg