EFFECTS OF DUST INGESTION ON GAS TURBINE PERFORMANCE AND ENDURANCE.
Final technical rept.,
SOUTHWEST RESEARCH INST SAN ANTONIO TX DEPT OF AUTOMOTIVE RESEARCH
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The results of this investigation on this simple cycle gas turbine indicate that serious operational difficulties will be encountered due to dust erosion of various engine components by extremely small particle size dust. The erosion of the components is essentially directly proportional to the airborne dust concentration. The results show that both aluminum and steel alloy components experience severe erosion from dust ingestion and will result in a significant reduction in engine service life even at low concentration levels. The analysis of the erosion data indicates that the use of harder materials for the vulnerable components such as the compressor impeller may not be the solution. Sinch there will be definite weight limitations on some components, the more satisfactory solution would appear to be the use of an effective air cleaner. Data from the investigation show that an air cleaner will be required on virtually all military stationary power installations if a 1000-hour engine life is to be achieved under normal rated load and speed conditions when operating in a dry environment under most field conditions. The air cleaner for even a simple cycle gas turbine must be capable of filtering all particles above two to three microns in size even under low concentration dust environments. Author