FIELD: turbine manufacture; double-jet engines. SUBSTANCE: fan has disk with hollow blade rim secured on it. Adjoining disk at fan outlet is near-hub air cavity. Blade roots are provided with holes pneumatically connecting the near-hub cavity with cavities of blade fins. Each blade is provided with longitudinal slit over entire length of trailing edge. Longitudinal slit is provided with strips. Availability of slit makes it possible to ensure injection of air due to centrifugal forces over entire length of trailing edge and to smooth off flow in vortex wake, thus reducing fan noise. EFFECT: enhanced efficiency. 2 dwg
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