Impacts of low-pressure (LP) compressors’ fouling of a turbofan upon operational-effectiveness of a military aircraft

Naeem, Muhammad

doi:10.1016/j.apenergy.2007.02.011

Cited by 12 publications

(6 citation statements)

References 15 publications

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“…The rate of fouling is a strong function of total humidity. As humidity increases, particles will adhere to the surface, and the performance of the engine deteriorates [12]. But at high humidity, some amount of the water present will flow off the aerodynamic surfaces rather than adhering to the surface.…”

Section: Impact Of Humidity On Foulingmentioning

confidence: 99%

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Fouling and Corrosion in an Aero Gas Turbine Compressor

Mishra

2015

J Fail. Anal. and Preven.

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This paper deals with the study carried out on fouling and corrosion problems in an aero gas turbine engine which operates from coastal environment. Various parameters responsible for such problems are presented in the paper which causes deterioration in performance and leads to failure of the components. Prevention and control procedures for fouling and corrosion are also highlighted. Compressor washes such as performance recovery wash and desalination wash are found to be very effective in addressing these issues. The frequency of compressor wash is to be judiciously worked out from the corrosion rate and performance deterioration points of view.

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Section: Impact Of Humidity On Foulingmentioning

confidence: 99%

“…The presence of contaminants in the environment greatly depends on the location where it is operated and also on the local activities. They are also dependant on climatic conditions such as wind direction, wind speed, temperature, relative humidity, and precipitation which are constantly changing [10,12].…”

Section: Contaminantsmentioning

confidence: 99%

Fouling and Corrosion in an Aero Gas Turbine Compressor

Mishra

2015

J Fail. Anal. and Preven.

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“…A slight difference in percentage values of safe life in terms of flight cycles and that in terms of hours is because of the dependency of flight Mach number/flight velocity on ID and thereby difference in time taken to complete the mission at different IDs as well as consideration of safe number of flight cycles in whole numbers toward lower side instead of exact values in decimal points. The adverse affect at higher IDs becomes even more severe for engines with fouled compressors [7,8]. For example for engines with 10% low pressure compressors' fouling, the blades' CrpD at ID 35 K is 10 times higher as compared with clean engines (i.e.…”

Section: Hp Turbine Blade's Creep Life-consumptionmentioning

confidence: 99%

“…Significant adverse effects of in-service deterioration of an aero-engine have been already established by earlier investigations [7][8][9]. As a result of a comprehensive literature review, it was realized that besides deterioration of an aero-engine, the condition of fuel as well as of the incoming air stream is also expected to have significant effects on the aero-engine's over-E-mail address: naeem1947@hotmail.com.…”

Section: Introductionmentioning

confidence: 99%

Implications of day temperature variation for an aero-engine's HP turbine-blade's creep life-consumption

Naeem¹

2009

Aerospace Science and Technology

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“…Damage is often caused by large foreign objects striking the flow path components. Abrasion is caused when a rotating surface rubs on a stationary surface) [2][3][4][5][6][7]. These problems can not only lead to the uncertainties in component performance but also contribute to the deterioration of each component performance and eventually cause the uncertainties in aeroengine overall performance.…”

Section: Introductionmentioning

confidence: 99%

A Probabilistic Design Methodology for a Turboshaft Engine Overall Performance Analysis

Chen

Zhang

Tang

2014

Advances in Mechanical Engineering

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In reality, the cumulative effect of the many uncertainties in engine component performance may stack up to affect the engine overall performance. This paper aims to quantify the impact of uncertainty in engine component performance on the overall performance of a turboshaft engine based on Monte-Carlo probabilistic design method. A novel probabilistic model of turboshaft engine, consisting of a Monte-Carlo simulation generator, a traditional nonlinear turboshaft engine model, and a probability statistical model, was implemented to predict this impact. One of the fundamental results shown herein is that uncertainty in component performance has a significant impact on the engine overall performance prediction. This paper also shows that, taking into consideration the uncertainties in component performance, the turbine entry temperature and overall pressure ratio based on the probabilistic design method should increase by 0.76% and 8.33%, respectively, compared with the ones of deterministic design method. The comparison shows that the probabilistic approach provides a more credible and reliable way to assign the design space for a target engine overall performance.

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Impacts of low-pressure (LP) compressors’ fouling of a turbofan upon operational-effectiveness of a military aircraft

Cited by 12 publications

References 15 publications

Fouling and Corrosion in an Aero Gas Turbine Compressor

Fouling and Corrosion in an Aero Gas Turbine Compressor

Implications of day temperature variation for an aero-engine's HP turbine-blade's creep life-consumption

A Probabilistic Design Methodology for a Turboshaft Engine Overall Performance Analysis

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