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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Model Name Siemens (Anton 2018) NASA HW FEP (Rosario 2014) Gesell (2018) Compact Dynamics (2016) Average Efficiency Specific Power (kW/kg) 94% 5.9 - 6.6 95% 7.35 90% 6.5 93% 6.58 29 3.2 Electric Propulsion System Figure 3.6 Turbo-electric propulsion system architecture Similar to HPS, the electric propulsion system (EPS) will have the same architecture with electric components as seen in Figure 3.6. The basic requirements for an EPS are components such as generators, motors and cables. Unlike HPS, the EPS have been utilized numerous times in recent days. This provides us with diverse data to summarize in order to acquire the mass of EPS. Table 3.2 Electric motor/generator statistic In Table 3.2, parameters of electric motor/generator from different sources are presented. The Siemens motor was used for the experimental electric aircraft manufactured by Diamond air- craft. The NASA motor is part of a Fixed Wing Hybrid Electric Propulsion technology roadmap that aims to achieve a specific power of 20 kW/kg by 2030. The third source is from a science journal, where a description of present electric propulsion technology is evaluated. In this journal, the specific power of the power electronics is given as 14.3 kW/kg with an ef- ficiency of 95% . The calculation of cable mass can be long process but in order to simply this a power density of 16 kg/m with an efficiency of 98% is assumed (Pornet 2017).

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