Exploring Vehicle Level Benefits of Revolutionary Technology Progress via Aircraft Design and Optimization

Liu, Yaolong; Elham, Ali; Horst, Peter; Hepperle, Martin

doi:10.3390/en11010166

Cited by 42 publications

(32 citation statements)

References 28 publications

(38 reference statements)

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“…The modeling approach is described in detail in [51]. Therefore, within this contribution only a brief introduction of the main features is provided.…”

Section: Simulation Structurementioning

confidence: 99%

“…Within mission iterations, the HEA parameters are utilized to deliver corresponding component information and energy requirements. Similar to the engine performance estimation methods for turbofan engines introduced in [51], within this contribution a modified method has been developed for turbo-prop engines. The engine performance calculations are based on published data, such as FAA/EASA engine certification data and ICAO engine emission database.…”

Section: Simulation Structurementioning

confidence: 99%

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Conceptual Design of Operation Strategies for Hybrid Electric Aircraft

et al. 2018

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Ambitious targets to reduce emissions caused by aviation in the light of an expected ongoing rise of the air transport demand in the future drive the research of propulsion systems with lower CO 2 emissions. Regional hybrid electric aircraft (HEA) powered by conventional gas turbines and battery powered electric motors are investigated to test hybrid propulsion operation strategies. Especially the role of the battery within environmentally friendly concepts with significantly reduced carbon footprint is analyzed. Thus, a new simulation approach for HEA is introduced. The main findings underline the importance of choosing the right power-to-energy-ratio of a battery according to the flight mission. The gravimetric energy and power density of the electric storages determine the technologically feasibility of hybrid concepts. Cost competitive HEA configurations are found, but do not promise the targeted CO 2 emission savings, when the well-to-wheel system is regarded with its actual costs. Sensitivity studies are used to determine external levers that favor the profitability of HEA.

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“…The modeling approach is described in detail in [51]. Therefore, within this contribution only a brief introduction of the main features is provided.…”

Section: Simulation Structurementioning

confidence: 99%

Section: Simulation Structurementioning

confidence: 99%

Conceptual Design of Operation Strategies for Hybrid Electric Aircraft

et al. 2018

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“…Within the project "Energy System Transformation in Aviation", three aircraft designs [2] have been generated ( Figure 1). As shown in Figure 1, one possible application for long-range traffic is the blended wing body (BWB) airplane.…”

Section: Future Aircraft Designsmentioning

confidence: 99%

A Generic Approach to Analyze the Impact of a Future Aircraft Design on the Boarding Process

et al. 2018

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Abstract:The turnaround process constitutes an important part of the air transportation system. Airports often represent bottlenecks in air traffic management (ATM), thus operations related to the preparation of the aircraft for the next flight leg have to be executed smoothly and in a timely manner. The ATM significantly depends on a reliable turnaround process. Future paradigm changes with respect to airplane energy sources, aircraft design or propulsion concepts will also influence the airport layout. As a consequence, operational processes associated with the turnaround will be affected. Airlines aim for efficient and timely turnaround operations that are correlated with higher profits. This case study discusses an approach to investigate a new aircraft design with respect to the implications on the turnaround. The boarding process, as part of the turnaround, serves as an example to evaluate the consequences of new design concepts. This study is part of an interdisciplinary research to investigate future energy, propulsion and designs concepts and their implications on the whole ATM system. Due to these new concepts, several processes of the turnaround will be affected. For example, new energy storage concepts will influence the fueling process on the aircraft itself or might lead to a new infrastructure at the airport. This paper aims to evaluate the applied methodology in the case of a new boarding process, due to a new aircraft design, by means of a generic example. An agent-based boarding simulation is applied to assess passenger behavior during boarding, particularly with regard to cabin layout and seat configuration. The results of the generic boarding simulation are integrated into a simplified, deterministic and generic simulation of the turnaround process. This was done to assess the proposed framework for future investigations which on the one hand address the ATM system holistically and on the other, incorporate additional or adapted processes of the turnaround.

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“…A new long-range BWB design concept was developed considering the impacts of different technologies together, see [8]. The developed design in the EWL x/c Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1. Summary of the parameters and best technologies according to [8] for the long range BWB-design under consideration in the present work. The first part of this paper presents a structural analysis of a composite multi-bubble fuselage segment for a BWB aircraft.…”

Section: Introductionmentioning

confidence: 99%

A Structural Design Concept for a Multi-Shell Blended Wing Body with Laminar Flow Control

et al. 2018

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Static and fatigue analyses are presented for a new blended wing body (BWB) fuselage concept considering laminar flow control (LFC) by boundary layer suction in order to reduce the aerodynamic drag. BWB aircraft design concepts profit from a structurally beneficial distribution of lift and weight and allow a better utilization of interior space over conventional layouts. A structurally efficient design concept for the pressurized BWB cabin is a vaulted layout that is, however, aerodynamically disadvantageous. A suitable remedy is a multi-shell design concept with a separate outer skin. The synergetic combination of such a multi-shell BWB fuselage with a LFC via perforation of the outer skin to attain a drag reduction appears promising. In this work, two relevant structural design aspects are considered. First, a numerical model for a ribbed double-shell design of a fuselage segment is analyzed. Second, fatigue aspects of the perforation in the outer skin are investigated. A design making use of controlled fiber orientation is proposed for the perforated skin. The fatigue behavior is compared to perforation methods with conventional fiber topologies and to configurations without perforations.

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Exploring Vehicle Level Benefits of Revolutionary Technology Progress via Aircraft Design and Optimization

Cited by 42 publications

References 28 publications

Conceptual Design of Operation Strategies for Hybrid Electric Aircraft

Conceptual Design of Operation Strategies for Hybrid Electric Aircraft

A Generic Approach to Analyze the Impact of a Future Aircraft Design on the Boarding Process

A Structural Design Concept for a Multi-Shell Blended Wing Body with Laminar Flow Control

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