FIELD: foundry.
SUBSTANCE: blade preform (46) comprises a strut connecting platform (16) to blade root portion (14), front surface (26) and rear surface (28), each of which extends in a direction perpendicular to the longitudinal direction of the blade root portion, and is formed in the upstream and downstream ends of the strut. Front surface (26) and rear surface (28) respectively connect the upstream and downstream ends of platform (16) to the upstream and downstream ends of root portion (14). Blade root portion (14) extends in a direction perpendicular to its longitudinal direction by a distance that is less than the distance by which front and rear surfaces (26, 28) extend. Lateral edges (40) of each of said surfaces extend in the form of walls (44) which converge at the ends of the blade root portion.
EFFECT: preventing the formation of cracks in areas of connecting lateral surfaces with the root portion of the blade preform.
5 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| REMOTE COMMUNICATION SYSTEM FOR AIRCRAFT | 2014 |
|
RU2668449C2 |
| CHAIN WITH OVERLAPPING LINKS FOR DRY ANGLE EXTRUSION PUMP | 2010 |
|
RU2534140C2 |
| GAS TURBINE ENGINE (VARIANTS) | 2012 |
|
RU2688073C2 |
| SEPARATE PULSE VALVE FOR COMPRESSOR CYLINDER | 2009 |
|
RU2528791C2 |
| HEAT EXCHANGER FOR AIR CONDITIONING PLANT | 1991 |
|
RU2039326C1 |
| CONSTANT VOLUME COMBUSTION CHAMBER FOR AVIATION TURBINE ENGINE, CONTAINING INTAKE/EXHAUST VALVES WITH SPHERICAL END CAP | 2013 |
|
RU2633743C2 |
| BEARING, LINER FOR INSTALLATION IN BEARING AND METHOD OF MECHANISM CREATION OF OIL REDISTRIBUTION ON LINER OF JOURNAL BEARING | 2010 |
|
RU2535954C2 |
| MIXING UNIT | 2020 |
|
RU2801134C2 |
| METHOD OF AND PLANT FOR CONTINUOUS POWER SUPPLY | 2002 |
|
RU2296232C2 |
| DRYING DEVICE | 2006 |
|
RU2402255C2 |
