Influence of Novel Airframe Technologies on the Feasibility of Fully-Electric Regional Aviation

Karpuk, Stanislav; Elham, Ali

doi:10.3390/aerospace8060163

Cited by 48 publications

(28 citation statements)

References 40 publications

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“…The outputs are considered in terms of data look-up tables, surrogate models, or tool exchange, which were directly integrated with the design framework. The final design of the short-range aircraft includes a clean sheet sizing, low/medium-fidelity MDO [5], and physics/based design optimization for refinement [6]. The final design assuming a 2050 EIS is shown in Fig.…”

Section: Preliminary Results On Overall Aircraft Levelmentioning

confidence: 99%

“…Multiple aircraft configurations were sized and the best one, i.e., the one with minimum energy consumption, is selected for further analysis and refinement. The final design includes a clean sheet sizing, low/medium-fidelity MDO [5], and physics/based design optimization for refinement [6]. Fehler!…”

Section: B Framework and Technologies For Overall Integration Studymentioning

confidence: 99%

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Vehicle Technologies towards Sustainable and Energy Efficient Aviation

Friedrichs

Elham

Hühne

et al. 2022

AIAA SCITECH 2022 Forum

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The overall mission is research and fundamental technological development for a sustainable future global air transport system. Following the vision of zero fossil fuel usage in aviation in a 2050 timeframe, reducing material and noise emissions while keeping air transport affordable on short to long range missions, SE²A focuses on significantly reducing the aircraft energy demand in combination with future energy storage and conversion technologies. This large design space makes preliminary system design and assessment based on models of different fidelity level indispensable. In this paper, the framework and research structure of the Cluster is described as well as a special focus on relevant and required vehicle technologies. This follows the need for a significant reduction of the mission energy to allow for future alternative propulsion systems and covers means for radical reductions in aircraft drag and dynamic loads, which in turn allow for reduced operating empty weight. An overall aircraft design methodology is employed for integration and assessment of technological progress. Such analysis is used to identify and quantify snowball effects and to prioritize technologies, but also to identify conflicting areas and requirements.

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Section: Preliminary Results On Overall Aircraft Levelmentioning

confidence: 99%

Section: B Framework and Technologies For Overall Integration Studymentioning

confidence: 99%

Vehicle Technologies towards Sustainable and Energy Efficient Aviation

Friedrichs

Elham

Hühne

et al. 2022

AIAA SCITECH 2022 Forum

Self Cite

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“…A sensitivity analysis of the SE 2 A SR aircraft to the battery energy density with the absence of all novel technologies was performed to determine what potential energy density could make all-electric regional aviation possible and how the aircraft characteristics are affected. The aircraft without novel technologies assumed 45% laminar flow on the wing and empennage, 5% laminar 18 Figure 1.…”

Section: Sensitivity Analysis Of the Aircraft Characteristics To Tech...mentioning

confidence: 99%

“…The aircraft without novel technologies assumed 45% laminar flow on the wing and empennage, 5% laminar 18 Figure 1. SE²A short range all-electric aircraft [2] Figure 1 shows the SE²A 1 short range (SR) aircraft with foldable wings and a high aspect ratio. The SE²A SR version 1 (SRV1) features an all-electric propulsion system with two fuselage-mounted electric motor-driven propellers.…”

Section: Sensitivity Analysis Of the Aircraft Characteristics To Tech...mentioning

confidence: 99%

Approach for CO2 Emission Related Cost Functions in the Context of Trade-Off Investigations of a Future Energy Efficient European Aviation

Forster¹,

Yildiz²,

Feuerle³

et al. 2022

Preprint

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Aircraft emissions represent a relevant amount of human induced CO2. Globally, up to 2.5 per cent of such emissions stem from the aviation industry. In order to investigate the effects within the atmosphere, realistic flight profiles are necessary to provide quantitatively tangible values of emissions. The flight profiles and the according fuel consumption can be calculated by using waypoints from flight plans and Base of Aircraft Data (BADA). This paper presents an approach to refine the fuel consumption by integrating the passenger load into the calculation. Since effects of emissions have to be assessed on a greater scale, such as on the European air traffic network, the presented approach provides cost functions for CO2 emissions for different aircraft types and load factors. The cost functions were derived by means of regression analyses of BADA based calculated flight profiles with a step size of one second. The calculations are based on real historic traffic scenarios of several days. The derived aircraft specific fuel burn coefficients enable a simple and efficient integration of CO2 estimations depending on the flight distance, load factor and aircraft type. This can be applied to large traffic scenarios to also study different set-ups such as travel restrictions, other disruptions or an alteration in the traffic system as a whole. In order to enable the assessment of further aspects of such changes to the European air traffic system at large and to foster reproducibility and comparability of related studies, we provide further general-purpose cost estimation functions for several important key characteristics. Besides fuel consumption, we develop cost estimations for air navigation fees and maintenance for conventional aircraft. Those functions are also provided for the design concept of a short-range all-electric aircraft. This propeller aircraft features game-changing technologies such as active laminar flow control, active load alleviation and advanced materials and structure concepts. The approaches discussed in this paper will focus on the generic aspects of aircraft related costs, which can be derived from general available data. For the sake of reproducibility, the results will be made publicly available.

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“…The boundary layer ingestion promises a significant reduction in overall aircraft drag and hence can yield significant fuel savings [21]. As recent publications showed, however, a mid-range application of battery-based technologies in near future is unlikely [22,23]. Simulation capabilities to assess the noise reductions with these technologies are far from mature and need more fundamental research.…”

Section: Se 2 a Mid-range Aircraft Applicationsmentioning

confidence: 99%

Low-Noise Design of Medium-Range Aircraft for Energy Efficient Aviation

et al. 2021

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Promising low-noise aircraft architectures have been identified over the last few years at DLR. A set of DLR aircraft concepts was selected for further assessment in the context of sustainable and energy-efficient aviation and was established at the TU Braunschweig in 2019, the Cluster of Excellence for Sustainable and Energy-Efficient Aviation (SE2A). Specific Top-Level aircraft requirements were defined by the cluster and the selected DLR aircraft designs were improved with focus on aircraft noise, emissions, and contrail generation. The presented paper specifically addresses the reduction of aviation noise with focus on noise shielding and modifications to the flight performance. This article presents the state of the art of the simulation process at DLR and demonstrates that the novel aircraft concepts can reduce the noise impact by up to 50% in terms of sound exposure level isocontour area while reducing the fuel burn by 6%, respective to a conventional aircraft for the same mission. The study shows that a tube-wing architecture with a top-mounted, forward-swept wing and low fan pressure ratio propulsors installed above the fuselage at the wing junction can yield significant noise shielding at improved low-speed performance and reduce critical fuel burn and emissions.

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Influence of Novel Airframe Technologies on the Feasibility of Fully-Electric Regional Aviation

Cited by 48 publications

References 40 publications

Vehicle Technologies towards Sustainable and Energy Efficient Aviation

Vehicle Technologies towards Sustainable and Energy Efficient Aviation

Approach for CO2 Emission Related Cost Functions in the Context of Trade-Off Investigations of a Future Energy Efficient European Aviation

Low-Noise Design of Medium-Range Aircraft for Energy Efficient Aviation

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