M. Schrade, S. Staudacher

Performance and maintenance characteristics of aircraft engines are highly influenced by erosion caused by ingested, solid particles. Axial compressor blades are vulnerable to erosion in particular since they are exposed to high relative fluid velocities and high particle concentrations. To be able to understand erosion phenomena in axial compressors, experimental work is indispensable. This paper presents a high-speed erosion test rig, which meets compressor specific boundary conditions in materials, fluid velocity and temperature. We present the design process and the commissioning of the test rig. Furthermore, erosion results with flat plates out of Ti6AlV4, which is a standard material for blades of the first stages of common axial high-pressure compressors, are discussed. The plates are eroded with a standardized test dust at fluid velocities of 300ms^-1 and 350ms^-1. The erosion of Ti6AlV4 showed typical patterns for ductile metals. We concluded that the high-speed test rig is able to fundamentally and reproducibly investigate erosion damage under compressor specific boundary conditions. Furthermore, we showed that common erosion rate models are not applicable for the materials, test rig setup, and the boundary conditions used in this work.

Deutscher Luft- und Raumfahrtkongress 2014, Augsburg

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2014

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

urn:nbn:de:101:1-2014112125833

Compressor erosion, erosion test rig

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21.11.2014