Abstract
Recently, the new Green Deal policy initiative was presented by the European Union. The EU aims to achieve a sustainable future and be the first climate-neutral continent by 2050. It targets all of the continent’s industries, meaning aviation must contribute to these changes as well. By employing a systems engineering approach, this high-level task can be split into different levels to get from the vision to the relevant system or product itself. Part of this iterative process involves the aircraft requirements, which make the goals more achievable on the system level and allow validation of whether the designed systems fulfill these requirements. Within this work, the top-level aircraft requirements (TLARs) for a hybrid-electric regional aircraft for up to 50 passengers are presented. Apart from performance requirements, other requirements, like environmental ones, are also included. To check whether these requirements are fulfilled, different reference missions were defined which challenge various extremes within the requirements. Furthermore, figures of merit are established, providing a way of validating and comparing different aircraft designs. The modular structure of these aircraft designs ensures the possibility of evaluating different architectures and adapting these figures if necessary. Moreover, different criteria can be accounted for, or their calculation methods or weighting can be changed.
Highlights
In the past, aviation has been a main driver for economic wealth by connecting millions of people, and by providing a fast option for trade between different continents
The figures of merit were displayed which validate to what extent the defined requirements are fulfilled
The focus was set on the European citizen and improvements to their life quality by reducing emissions of pollutants and noise
Summary
Aviation has been a main driver for economic wealth by connecting millions of people, and by providing a fast option for trade between different continents. The range of such an aircraft would be limited due to the low specific energy of current battery technology To tackle this flaw, a hybrid-electric concept combines the advantages of both worlds, i.e., the range provided by conventional fuel, and the emission reduction achieved by an electrified powertrain with higher efficiency. The needs and the requirements definition “To develop a syshnaellrdgreivteicthaeidrecsriagnftpdroecsesigs tno afcohrieavecaosmustmainearbclieaplrordeugcitoinaitls lhifye bcyrcilde,-welheiclsttrsitcill aircraft up to 50 seats sfaotrisefynintgrythiensttoakseehrovldiceres’bnyee2d0s3w5i/t2hi0n4t0h,etsoysitdemenstoiffysyksteeymse.nTahbeldinesgigtnedcehcnisoioln-s will drive emissions during all parts within the life cycle, which includes production, the ogies and a roadmap ofoperrarteiognuallapthoarsye, aasswpeelcl tass.eTndhoef clilfeeaanndsrheceyectlinagi.rcraft design shall help accelerate and integrate hyAbfrtiedr f-oerlmeuctlartiicngatihrecnreaefdts annddgotaelcshfonrothleosgyisetesmt,othaescehcioeuvldebeasusumsmtaariinzeadbilneto competitive aviation garmoiwsstiohn, satastewmeelnlt,ausseadcttoindgefianse athde sisyrstuempttohrattios troebgeudleastigonresd,.aTihretfroallfofwicinmg aisnth-e current mission statement for a regional HEA: agement and energy supp“lTioedrsev.”elop a synergetic aircraft design for a commercial regional hybrid-electric air-. On the other hand, when emissions are taxed, this might increase the DOCs for aircraft with higher emissions
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