Sensitivity Analysis of BLISK Airfoil Wear†
AbstractThe decreasing performance of jet engines during operation is a major concern for airlines and maintenance companies. Among other effects, the erosion of high-pressure compressor (HPC) blades is a critical one and leads to a changed aerodynamic behavior, and therefore to a change in performance. The maintenance of BLISKs (blade-integrated-disks) is especially challenging because the blade arrangement cannot be changed and individual blades cannot be replaced. Thus, coupled deteriorated blades have a complex aerodynamic behavior which can have a stronger influence on compressor performance than a conventional HPC. To ensure effective maintenance for BLISKs, the impact of coupled misshaped blades are the key factor. The present study addresses these effects on the aerodynamic performance of a first-stage BLISK of a high-pressure compressor. Therefore, a design of experiments (DoE) is done to identify the geometric properties which lead to a reduction in performance. It is shown that the effect of coupled variances is dependent on the operating point. Based on the DoE analysis, the thickness-related parameters, the stagger angle, and the max. profile camber as coupled parameters are identified as the most important parameters for all operating points. View Full-Text
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Kellersmann, A.; Reitz, G.; Friedrichs, J. Sensitivity Analysis of BLISK Airfoil Wear. Int. J. Turbomach. Propuls. Power 2018, 3, 14.
Kellersmann A, Reitz G, Friedrichs J. Sensitivity Analysis of BLISK Airfoil Wear. International Journal of Turbomachinery, Propulsion and Power. 2018; 3(2):14.Chicago/Turabian Style
Kellersmann, Andreas; Reitz, Gerald; Friedrichs, Jens. 2018. "Sensitivity Analysis of BLISK Airfoil Wear." Int. J. Turbomach. Propuls. Power 3, no. 2: 14.
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