Abb Turbo Systems Ag

Boris Mamaev

Bent Phillipsen

Evgeny Ryabov

A turbine blade is provided with a bracket arranged in the tip region of the blade and projecting beyond the blade profile. The bracket is formed merely in a section of a surface region of the pressure side, the surface region being enclosed by an imaginary chord bearing against the pressure side of the blade body both in the region of the leading edge and in the region of the trailing edge.

Turbine blade with bracket in tip region

The object of the invention is to improve the efficiency of a turbomachine blade provided with a reinforced hole for accommodating a damping element. To this end, the raised end faces ( ) of the marginal region ( ), reinforced toward the hole ( ), of the blade body ( ) are formed with an acute angle (&agr;) open toward the leading edge ( ) of the blade body ( ) and/or with an acute angle (&bgr;) open toward the blade tip ( ).

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Moscow, Russia

Boris Mamaev