EXPERIMENTAL VERIFICATION OF UNSTABLE CENTRIFUGAL COMPRESSOR WORK ON SMALL JET ENGINE

Abstract

The article, based on practical experiments, analyzes the process of creating an unstable opera-tion of a centrifugal compressor (surge) because of throttling the air flow into the inlet device. The aim of the article is to provide information on preparation, methodology and results of the experiments that were carried out in the research of unstable phenomena in a centrifugal com-pressor MPM-20 in the Laboratory for small turbojets engines that is a part of the Department of Aviation Engineering at the Faculty of Aeronautics, Technical University of Kosice, Slovak Re-public. The knowledge gained from the above experiments allow improved understanding of both birth and development processes of unstable work in radial compressors, thereby prevent-ing such phenomena in the real operation of air turbo-compressor engines (ATCE) and gas tur-bines (GT). The consequences of unstable work were analyzed on the damaged gas turbine.