In the present study, effects of flight-Mach number, flight altitude, fuel types, and intake air temperature on thrust specific consumption, thrust, mass flow rate, thermal propulsive efficiecies, as well exergetic efficiency exergy destruction rate in F135 PW100 engine are investigated. Based results obtained first phase, to model thermodynamic performance aforementioned cycle, Flight-Mach num...

This paper develops a data-driven fault tree methodology that addresses the problem of prognosis an aging system based on interpretable time causality analysis model. The model merges concepts knowledge discovery in dataset and to interpret effect structure over time. At periodic intervals, captures cause–effect relations form logic trees, then represents them one reflects changes due aging. pr...

The cooled cooling air technology (CCA technology) shows expected performance in solving the growing thermal challenge for advanced aero engines by reducing temperature of air. effect CCA on overall propelling with or without adjusting cycle parameters is controversial. Based this, both energy and exergy methods have been adopted to elaborate specific mechanisms above utilization discrepancy. A...

The aim of this publication was to investigate the effects blade count a high-pressure centrifugal compressor’s impeller has on performance DGEN 380 turbine engine at take-off. study began with development zero-dimensional thermo-fluid model engine. matched experimental data from WESTT CS/BV virtual test bench for baseline and then implemented analyse behaviour alternative counts. corresponding...

Future trends in engine health management (EHM) systems are information fusion, advanced analytical methods, and the concept of Intelligent Engines. Machine Learning (ML)-based aero-engine gas path diagnostic methods promising under motivation these trends. However, previous ML-based structures rarely applied actual engineering practice because they purely mathematical lack physical insight or ...

This paper presents a modular, flexible, extendable and fast-computational framework that implements multidisciplinary, varying fidelity, multi-system approach for the conceptual preliminary design of novel aero-engines. In its current status, includes modules multi-point steady-state engine design, aerodynamic geometry weight, aircraft mission analysis, Nitrogen Oxide (NOx) emissions, control ...

Aviation faces increasing pressure not only to reduce fuel burn, and; therefore, CO2 emissions, but also provide technical solutions for an overall climate impact minimization. To combine both, a concept the enhancement of aircraft engine by steam injection with inflight water recovery is being developed. The so-called Water-Enhanced Turbofan (WET) promises significant reduction NOx and contrai...

The data acquired from available system sensors forms the foundation upon which any health management system is based, and the available sensor suite directly impacts the overall diagnostic performance that can be achieved. While additional sensors may provide improved fault diagnostic performance there are other factors that also need to be considered such as instrumentation cost, weight, and ...

Kalman filters are often used to estimate the state variables of a dynamic system. However, in the application of Kalman filters some known signal information is often either ignored or dealt with heuristically. For instance, state variable constraints (which may be based on physical considerations) are often neglected because they do not fit easily into the structure of the Kalman filter. Rece...