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Wear Prognostic on Turbofan Engines
Annual Conference of the PHM Society, 2013One of the most evident characteristic of wear for a turbofan engine is the exhaust gas temperature (EGT). It seems clear that this temperature increases when some carbon deposits on the turbine, when the compressor efficiency diminishes so the fuel flow should increase to produce the same amount of thrust, or even when some ...
Jérôme Lacaille +2 more
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TF33 Turbofan engine in every respect: Performance, environmental, and sustainability assessment
Environmental Progress & Sustainable Energy, 2020The performance parameters, environmental sensitivity, and sustainability of a turbofan engine used extensively in military aviation are examined to the last detail.
Ozgur Balli, S. Ekici, T. Karakoc
semanticscholar +1 more source
Gross thrust coefficient - Turbofan engines
Journal of Aircraft, 1969QL = CS(h ± X6 (2) The plenum pneumatic capacitances are based on isentropic compressibility. The pressure rates associated with the inner circular skirt plenums and the inskirt plenum, which lies between the inner circular skirts and the outer peripheral skirt, vary with vehicle motion in pitch and heave where dP/dt = (kP/V)[2Q + A(dZ/dt ± xd8/dt)] (3)
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Environmental Progress & Sustainable Energy, 2020
In this study, energy, environment and enviroeconomic analyses are applied to the turbofan engine used in aviation industry. The CO2 emissions of the turbofan engine are calculated and cost of the CO2 emissions for a daily period are evaluated.
H. Tuzcu, Yasin Sohret, H. Caliskan
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In this study, energy, environment and enviroeconomic analyses are applied to the turbofan engine used in aviation industry. The CO2 emissions of the turbofan engine are calculated and cost of the CO2 emissions for a daily period are evaluated.
H. Tuzcu, Yasin Sohret, H. Caliskan
semanticscholar +1 more source
Restricted-Boltzmann-Based Extreme Learning Machine for Gas Path Fault Diagnosis of Turbofan Engine
IEEE Transactions on Industrial Informatics, 2020Extreme learning machine (ELM) owns the advantages of less computational efforts and simple topology with single-hidden layer structure. However, the performance of plain ELM is sensitive to the input weights, bias, and the number of hidden neurons; and ...
F. Lu +3 more
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International Conference on Big Data and Smart Computing, 2020
This paper proposes a deep model structure to improve the prediction accuracy of remaining useful life (RUL) of the turbofan engine by using the correlation analysis that reduces the model complexity.
Chang Woo Hong +5 more
semanticscholar +1 more source
This paper proposes a deep model structure to improve the prediction accuracy of remaining useful life (RUL) of the turbofan engine by using the correlation analysis that reduces the model complexity.
Chang Woo Hong +5 more
semanticscholar +1 more source
Turbofan engine with reduced noise
The Journal of the Acoustical Society of America, 1998A noise reduction kit for modifying a two (2) spool axial flow turbofan engine with multi-stage compressors and fan driven by multi-stage reaction turbines, and a thrust of at least about 18,000 lbs. at sea level. There is a fan at the upstream end of the core engine for generating axial fan air flow through bypass ducts terminating at a common nozzle,
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Investigating Turbofan Engine Internal Aerodynamics
SAE Technical Paper Series, 1996<div class="htmlview paragraph">The intent of a balanced engine design process is to satisfy all systems requirements including operability, performance and durability. Due to the complexity of the trade-off process of the various metrics it is possible that system improvements may be required after a turbofan engine enters production.
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Takeoff characteristics of turbofan engines
Journal of Aircraft, 1990The present derivation of reliable formulas for the takeoff characteristics of turbofan-powered aircraft, encompassing ground-roll distance and time, fuel consumption, etc, incorporates ground effect-induced drag reduction. This drag reduction factor is varied according to type of aircraft; the turbofans in question may be of high-bypass transport ...
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