ВПЛИВ ПЕРЕПУСКНИХ ОТВОРІВ У ПРОВІДНОМУ ДИСКУ ВІДЦЕНТРОВОГО КОЛЕСА ШНЕКОВІДЦЕНТРОВОГО НАСОСА РРД НА ЙОГО НАПІР, ККД І КАВІТАЦІЙНІ ХАРАКТЕРИСТИКИ
DOI:
https://doi.org/10.15421/472207Keywords:
inducer-centrifugal pump, centrifugal wheel, bypass holes, pump efficiency, pump head.Abstract
In modern rocket technology, liquid rocket engines (LRE) with a pump fuel supply system have become widespread. The pump is the heart of the engine, because it supplies the engine with fuel. When designing some pumps, there is a need for bypass holes in the drive disk of the centrifugal wheel.
As part of the research, a comprehensive analysis of the pressure, efficiency and cavitation characteristics of the high-speed inducer-centrifugal pump of the upper stages of the TPA LREwas performed. The characteristics of the pumps were obtained experimentally. The oxidizer and fuel pumps of engines No. 1 and No. 2 were analyzed. According to the results of the study, it was established that the presence of bypass holes in the drive disk of the center wheel of the inducer-centrifugal pump TPA LRE increases its efficiency under certain conditions. The pressure of the fuel pump of TPA LRE No. 2 increases to 2.6%, which has no holes in the leading disk of the centrifugal wheel. The presence or absence of bypass holes in the leading disk of the centrifugal wheel does not affect its cavitation characteristics.
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