THERMAL ANALYSIS OF A COMPOSITE CENTRIFUGAL COMPRESSOR IMPELLER

A heat calculation is presented for a centrifugal compressor impeller of a small-size composite gas turbine engine. Consideration has been given to the existing approaches to designing centrifugal compressor impellers. A description has been given of the methods of numerical simulation of the thermal state of a polysegment impeller of a composite centrifugal compressor under the action of a thermal load Temperature distribution has been obtained f or each individual element of the design and the assembly on the whole. We have determined the value of the required consumption of cooling air to ensure a standard operation of the compressor in which the values of local temperatures on the product do not exceed permissible temperatures of operation. Conclusions have been drawn on the possibility of using polymer composite materials in heavily loaded components of advanced aircraft engines.