Multi-disciplinary conceptual design of future jet engine systems

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Multi-disciplinary conceptual design of future jet engine systems ( multi-disciplinary-conceptual-design-future-jet-engine-syste )

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Framework Development Konstantinos G. Kyprianidis The next three codes discussed cannot be considered as full conceptual design tools. Nevertheless, they do consider some important aspects of engine and aircraft conceptual design: GasTurb [24] is a user-friendly gas turbine performance simulation code that can evaluate the thermodynamic cycle of a predefined set of engine architec- tures, both at design and off-design. Recent additions to the program allow the preliminary geometrical design of a gas turbine engine including disc stress calculations. PIANO (Project Interactive ANalysis and Optimisation) [25] is a user-friendly aircraft preliminary design and analysis tool. It can be used to design and predict the performance of conventional aircraft configurations including emissions and costs. GSP (Gas turbine Simulation Program) [26] is a flexible object-oriented tool for gas turbine engine performance analysis [27]. Additions to the code presented by Shakariyants et al. [28,29] have extended the tool’s capabilities to in-flight exhaust emission studies, while work by Montella and van Buijtenen [30] has allowed the evaluation of the impact of component design on engine overall per- formance. 2.1.2 Conceptual design tools - lessons learned The aero engine industry is in constant search for more efficient and environ- mentally friendly power plants. Along with a continued progress in air traffic management, aircraft structures and aerodynamics, lighter and more efficient engines are being projected. Current and future engine noise and emission certi- fication requirements make the search for optimal engines truly multidisciplinary. Decision making on optimal engine cycle selection has to consider mission fuel burned, operating cost, engine and airframe noise and environmental impact. Each of the conceptual design tools presented in this brief review has its’ merits and shortfalls. Unnecessary nested loops/iterations in the conceptual design al- gorithms are often encountered which increases system complexity and reduces computational speed while lack of code modularity - present in some of them - affects the system’s maintainability and extendability. More importantly, most 12

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