Ceramic core for a multi-cavity turbine blade
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United States of America Patent
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Mar 30, 2021
Grant Date -
Mar 15, 2018
app pub date -
Mar 22, 2016
filing date -
Mar 23, 2015
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Abstract
A ceramic core used for fabricating a hollow turbine blade for a turbine engine by using the lost-wax casting technique and shaped to constitute the cavities of the blade as a single element, includes, in order to feed the insides of these cavities jointly with cooling air, core portions that are to form first and second lateral cavities and that are connected to a core portion that is to form at least one central cavity, firstly in the core root via at least two ceramic junctions, and secondly at various heights up the core via a plurality of other ceramic junctions of positioning that defines the thickness of the internal partitions of the blade, while also ensuring additional cooling air for predetermined critical zones of the first and second lateral cavities.
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