ALL-RUSSIAN SCIENTIFIC RESEARCH INSTITUTE OF AVIATION MATERIALS


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Aircraft metallic materials >> Casting Superalloys for GTE Blades >> Advanced technological developments for casting GTE blades of aircraft and power engineering application >> The production technology of single-crystal blades

The production technology of single-crystal blades

The production technology of single-crystal blades with the principally new transpiration (penetrating) cooling method. The cooling of hot blade zones is carried out by the system of regular channels and holes with the diameter of 0.5-0.8 mm, formed in the blade walls by using ceramic mini-cores or ceramo-polymer flexible salient cores. The bench trials of blades in TsIAM showed, that their application allows to raise the gas turbine entry temperature to 2200 K, to increase the cooling coefficient up to 0.83-0.85, to reduce the cooling air consumption by 15-30%.


Blade inner cavity structure
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