Comparison of Concepts: Classic Jet Propulsion, Turbo-Electric Propulsion and Turbo-Hydraulic Propulsion

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Comparison of Concepts: Classic Jet Propulsion, Turbo-Electric Propulsion and Turbo-Hydraulic Propulsion ( comparison-concepts-classic-jet-propulsion-turbo-electric-pr )

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Turbo Hydraulic System Electric 1.3 Objectives A generalized prefix meaning driven by or associated with gas turbine engine. Complete aircraft installation comprising closed circuits of piping, en- gine-driven pumps, accumulators, valves, heat exchangers and filters. Powered or worked by electricity (Crocker 2011). 14 The main objective of this thesis is to find the superior propulsion system concept for passen- ger aircraft with respect to Direct Operating Costs and environmental impact. To study in de- tail the various propulsion concepts. To model a turbo-hydraulic and turbo-electric propulsion system. The propulsion system concept considered for comparison are turbo-electric, turbo- hydraulic and classic jet propulsion. Also, to evaluate a range of hybrid concepts developed by combining different gas turbine engines. 1.4 Previous Research This thesis is mainly a continuation of research by Prof. Scholz who has studied various con- cepts of aircraft design and has evaluated the electric and hybrid concepts. The aircraft design concept represented in this thesis was according to Scholz (2018a). It is part of the lecture of aircraft design course at HAW Hamburg. The course consists of all the essential knowledge required to make a preliminary aircraft design sizing. It also includes a section for Direct Op- erating Costs (DOC), where the topic is well explained and consists all the statistical values required. Although the concept of turbo-hydraulic propulsion was not studied before, a preliminary study was done in Scholz (2018b) which was the starting point of this research. For the basic formulae required to design a hydraulic system, Hatami (2019) and NPTEL (2013) was used.

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