Surface roughness of real operationally used compressor blade and blisk
| Autor: | Philipp Gilge, Jens Friedrichs, Jörg Seume, Andreas Kellersmann |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
blisk blades
Materials science Aircraft High pressure effects 020209 energy Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau Aerospace Engineering Mechanical engineering 02 engineering and technology Surface finish Dewey Decimal Classification::300 | Sozialwissenschaften Soziologie Anthropologie::380 | Handel Kommunikation Verkehr 01 natural sciences aircraft engine 010305 fluids & plasmas Pressure rise Aircraft engine maintenance Surface roughness 0103 physical sciences Compressor performance Three-dimensional laser scanning 0202 electrical engineering electronic engineering information engineering Compressor blades High pressure compressor Thrust specific fuel consumption operationally stressed surfaces Engines Roughness parameters Deterioration Specific fuel consumption Mechanical Engineering ddc:380 Axial compressor Aircraft engines Compressor blade ddc:620 Gas compressor Compressors |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233 (2019), Nr. 14 |
| DOI: | 10.15488/5070 |
| Popis: | Deterioration of axial compressors is in general a major concern in aircraft engine maintenance. Among other effects, roughness in high-pressure compressor reduces the pressure rise and thus efficiency, thereby increasing the specific fuel consumption of an engine. Therefore, it is important to improve the understanding of roughness on compressor blading and their impact on compressor performance. To investigate the surface roughness of rotor blades of a compressors, different stages of an axial high-pressure compressor and a first-stage blisk (BLade–Integrated–dISK) of a regional aircraft engine is measured by a three-dimensional laser scanning microscope. Fundamental types of roughness structures can be identified: impacts in different sizes, depositions as isotropically distributed single elements with steep flanks and anisotropic roughness structures direct approximately normal to the flow direction. To characterise and quantify the roughness structures in more detail, roughness parameters were determined from the measured surfaces. The quantification showed that the roughness height varies through the compressor depending on the stage, position and the blade side. Overall complex roughness structures of different shape, height and size are detected regardless of the type of the blades. |
| Databáze: | OpenAIRE |
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