FIELD: machine building.
SUBSTANCE: turbine blade spreads radially between the blade root and the blade tip. In the blade tip there is an open cavity that is formed with a closed end wall and a side rim. The side rim of the cavity carries at least one rib passing between front end and rear end of the blade. When in operation, the above rib causes occurrence of turbulent structure that has three levels of gas flow in radial direction.
EFFECT: structuring of hot gas flow in the cavity so that heat exchange between hot gas and cavity walls can be reduced.
13 cl, 6 dwg
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