Predicting the Performance of a Gas Turbine Engine Undergoing Compressor Blade Erosion

Scala, S.; Konrad, Martin; Mason, Roger A.; Skelton, Donald R.

doi:10.2514/6.2003-5259

Cited by 11 publications

(4 citation statements)

References 4 publications

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“…The erosive wear process calculation was not carried out directly. Instead of this to assess the erosion rate open sources data were used [18][19][20]. For each case (no defect, 25% erosive wear, and 50% erosive wear), gas-dynamic and strength calculations were carried out.…”

Section: Resultsmentioning

confidence: 99%

Approach for the modelling of the compressor’s defective blades with numerical simulation methods

Блинов¹,

Zubkov²,

Belyaev³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The current work presents the intermediate results of model development to assess the impact of various defects on the axial compressor operation. Recommendations for adjusting computational models are proposed to conduct gas-dynamic and strength studies of compressor stages and blades, taking into account various defects: verification for the presented models was carried out, which results are also presented in the paper. Based on the verification calculations results some features of CFD modeling are considered, as well as requirements for the investigated defects are indicated. The Discussion section presents the defects classification according to their influence on the compressor operation, which studying is possible using a specially developed mathematical description of blade profiles and blades geometry, as well as considering all the recommendations for computational model adjusting and a general approach to blades modeling defects.

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Section: Resultsmentioning

confidence: 99%

Approach for the modelling of the compressor’s defective blades with numerical simulation methods

Блинов¹,

Zubkov²,

Belyaev³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Gas Path Analysis (GPA), pioneered by Urban [9][10][11] is used to assess the condition of individual engine components, based on the aero-thermodynamic relationships that exist between the component and direct measurements of gas path parameters [12]. The theory behind this relationship can be summarized by: "The presence of a primary gas-path physical fault induces change in the component characteristic that shows up a deviation of the measurable parameters from the baseline conditions" [13]. Therefore, the purpose of the GPA is to detect, isolate and quantify the gas path components faults that have observable impacts on the measurable variables with the hope that will facilitate the subsequent isolation of the underlying physical fault.…”

Section: Gas Path Analysismentioning

confidence: 99%

“…Therefore, the purpose of the GPA is to detect, isolate and quantify the gas path components faults that have observable impacts on the measurable variables with the hope that will facilitate the subsequent isolation of the underlying physical fault. For a gas turbine engine, the mathematical relationship between dependent (engine component health parameters) and independent parameters (gas path measurements) is expressed analytically as [13,14] (…”

Section: Gas Path Analysismentioning

confidence: 99%

The Impact of Measurement Noise in GPA Diagnostic Analysis of a Gas Turbine Engine

Ntantis¹

2013

J Aeronaut Aerospace Eng

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The performance diagnostic analysis of a gas turbine is accomplished by estimating a set of internal engine health parameters from available sensor measurements. No physical measuring instruments however can ever completely eliminate the presence of measurement uncertainties. Sensor measurements are often distorted by noise and bias leading to inaccurate estimation results. This paper explores the impact of measurement noise on Gas Turbine GPA analysis. The analysis is demonstrated with a test case where gas turbine performance simulation and diagnostics code TURBOMATCH is used to build a performance model of a model engine similar to Rolls-Royce Trent 500 turbofan engine, and carry out the diagnostic analysis with the presence of different levels of measurement noise. Conclusively, to improve the reliability of the diagnostic results, a statistical analysis of the data scattering caused by sensor uncertainties is made. The diagnostic tool used to deal with the statistical analysis of measurement noise impact is a model-based method utilizing a non-linear GPA.

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“…One can observe a few general studies 10,[12][13][14][15][16][17] reported in the literature on the performance degradation of aero gas turbine engines due to various environmental effects. The most prominent among them is AGARD-CP-558 17 which discusses the sand erosion issues encountered during the military operation in the deserts of Gulf region.…”

Section: Introductionmentioning

confidence: 99%

Differential Degradation Assessment of Helicopter Engines Operated in Marine Environment

Samuel

2014

DSJ

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The helicopters used for marine operations encounter harsh environment laden with salt mist, sand and dust which could accelerate the deterioration of components. Assessment of the effect of operational environment on component degradation of such helicopter engines is crucial in scheduling their maintenance and ensuring flight safety. The objective of this study is to understand and assess the differential degradation pattern of aeroengines operated in marine environment in comparison to their counterparts operated in non-marine environment. In this study, a sample of 257 ex-service aeroengines of same type and make, operated in marine and non-marine environment were randomly selected and their degradation pattern observed. After obtaining the data on component degradation, further statistical analysis was carried out and the statistical significance of the observations were computed. Out of the ten major components considered in this study, five of them were found to have statistically significant differential degradation due to operation in marine environment. For the remaining components adequate evidence was not available to substantiate differential degradation due to operation in marine environment. These findings serve as valuable input for maintenance inventory planning as well as component improvement programme.

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Predicting the Performance of a Gas Turbine Engine Undergoing Compressor Blade Erosion

Cited by 11 publications

References 4 publications

Approach for the modelling of the compressor’s defective blades with numerical simulation methods

Approach for the modelling of the compressor’s defective blades with numerical simulation methods

The Impact of Measurement Noise in GPA Diagnostic Analysis of a Gas Turbine Engine

Differential Degradation Assessment of Helicopter Engines Operated in Marine Environment

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