Browsing by Author "Alrashed, Wael"

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    Economic and environmental viability assessment of NASA’s turboelectric distribution propulsion
    (Elsevier, 2020-06-29) Alrashed, Mosab; Nikolaidis, Theoklis; Pilidis, Pericles; Alrashed, Wael; Jafari, Soheil
    The concept of turboelectric-distributed propulsion (TeDP) has become integral to engineering because of its ability to generate electricity. However, social science compels careful evaluations of TeDP’s environmental and economic impacts—out of caution, such elements must be taken up before TeDP is put into practice. Responding to this call, this research investigates TeDP’s economic and environmental viability with a case study of the National Aeronautics and Space Administration’s (NASA) proposal for a TeDP aircraft, N3-X, using technical aspects and real data integration. The economic assessment measures NASA’s N3-X economic added value for aviation manufacturing, operations, and investors as well as net present value, internal rate of return, and payback period. Meanwhile, the environmental assessment looks at carbon monoxide and dioxide and oxides of nitrogen. The economic and environmental evaluation results establish the viability of TeDP.
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    Key performance indicators for turboelectric distributed propulsion
    (Emerald, 2021-02-23) Alrashed, Mosab; Nikolaidis, Theoklis; Pilidis, Pericles; Jafari, Soheil; Alrashed, Wael
    Purpose Recent advancements in electrified transportation have been necessitated by the need to reduce environmentally harmful emissions. Accordingly, several aviation organisations and governments have introduced stringent emission reduction targets for 2050. One of the most promising technologies proposed for achieving these targets is turboelectric distributed propulsion (TeDP). The objective of this study was to explore and identify key indicators for enhancing the applicability of TeDP in air transportation. Design/methodology/approach An enhancement valuation method was proposed to overcome the challenges associated with TeDP in terms of technological, economic and environmental impacts. The result indicators (RIs) were determined; the associated performance indicators (PIs) were analysed and the key RIs and PIs for TeDP were identified. Quantitative measurements were acquired from a simulated TeDP case study model to estimate the established key PIs. Findings It was determined that real-world TeDP efficiency could be enhanced by up to 8% by optimising the identified key PIs. Originality/value This study is the first to identify the key PIs of TeDP and to include a techno-economic environmental risk analysis (TERA) based on the identified key PIs. The findings could guide developers and researchers towards potential focus areas to realise the adoption of TeDP.