Abstract
Aircraft power system is a complex system consisting of the power generation system, the power management and distribution system, and the power consumption system, which accounts for the aircraft's major fuel consumption and emissions. This paper proposes a scenario-based comprehensive power requirement analysis and system architecture methodology in order to alleviate the risk of systems over-design and discoordination caused by traditional bottom-up load collection and individual system design. Starting from the operation scenario, system functions are identified and corresponding physical architecture and power loads are analysed. Given the complexity of operation scenarios and aircraft power system, model-based system engineering methodology is applied to the top-down aircraft power system architecture design. SysML tool is used to carry out to analyse the aircraft power system architecture during taxi scenario, which provides great advantages on model tracing and reuse.
Highlights
Civil aviation is one of the important industries in modern society, connecting people from different countries and continents together
In order to better analyze the aircraft energy flow, the whole aircraft power system can be divided into three parts, including the power generation system, the power management and distribution system, and the power consumption system
In order to lower the risk of systems over-design and discoordination caused by traditional inverse statistical analysis method and individual system design, a scenario-based comprehensive power requirement analysis and system architecture methodology is established in this paper
Summary
Civil aviation is one of the important industries in modern society, connecting people from different countries and continents together. It faces huge challenge of reducing energy consumption and carbon dioxide emissions, considering the expected average of 4.3% demand growth per year over the few decades [1]. In 2009, all stakeholders of the aviation industry, including aircraft and engine manufacturers, airlines, airports, air navigation service providers and governments, committed to reduce global net aviation carbon emissions by 50% by the year 2050 relative to 2005 [2]. Based on model-based system engineering concepts, the aircraft power system architecture analysis and modelling are carried out from a global perspective
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