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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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34 4 Aircraft Design Methodology In this research, Aircraft Design plays a crucial role in analysis. Diverse propulsion system techniques were applied to account fuel burn, costs and environmental impact. Tools such as PreSTo for turboprop and turbofan equipped aircraft were utilized. These tools were created by AERO group at Hamburg University of Applied Sciences for research purposes. The air- craft design method used in this thesis follows the Aircraft Design lectures series by Scholz (2019). Three different propulsion system architectures were analysed with two distinct pro- pulsion systems powered by three different gas turbine engines, summing up to ten different configurations. 4.1 Requirements As mentioned earlier, the Airbus 320 aircraft is used as a reference aircraft. The Airbus 320 family of aircraft have several versions of the model to suit demands of the customers. The model A320-200 is chosen along with the CFM 56-5B4 engines configuration. This configu- ration was chosen mainly due to the availability of data. The principal idea of the thesis is to compare the aforementioned new propulsion concepts with an existing aircraft. Therefore, the Top-Level Aircraft Requirements (TLAR) of the A320 aircraft will be used to start the air- craft design procedure. Table 4.1 Top level aircraft requirements of A320 (Airbus 2019) Requirement Number of Passengers 𝑛 Range 𝑅 Cruise Mach Number 𝑀 Value 180 1700 NM 0.78 From Table 4.1 and Figure 4.1, the TLARs for this research are expressed. In the following aircraft design, it is assumed that all aircraft have a fuselage and other dimensions similar to that of A320. This is done because the thesis focuses mainly on effects of new propulsion sys- tem concepts on aircraft design. Therefore, using the parameters of the A320, a similar air- craft is redesigned without making any modifications. The redesigned aircraft is then installed with various introduced propulsion concepts. The aircraft parameters will then be compared with the A320 and the initial redesign of the A320 aircraft.

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