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Hoogerdijk, Tom (author)Hydrogen is seen as a potential energy carrier for the next generation of aircraft that will be more climate-friendly than the previous generation of kerosene-powered aircraft. Two types of hydrogen-based propulsion systems are currently foreseen for such aircraft: hydrogen combustion and hydrogen fuel cell. In addition to producing useful...master thesis 2023
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Zupanič, Miha (author)This research project investigated the potential benefits of using hybrid hydrogen fuel-cell powertrains in commuter aircraft certified under the EASA CS-23 category to reduce the aviation industry's environmental impact. The study used an in-house aircraft design synthesis software to model conventional and fuel cell aircraft, including a...master thesis 2023
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Chen, Sian Ying (author), van de Waerdt, W.A. (author), Castro, Saullo G.P. (author)The Flying-V aircraft concept promises better fuel-burn performance over conventional tube-and-wing configurations, integrating the passenger cabin and cargo volume into the lifting surface. However, the wing-fuselage and cockpit windows of the Flying-V are exposed to the flight direction, posing a new challenge to the design and...journal article 2023
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Garcia Gonzalez, Pedro (author)Solid Oxide Fuel Cell (SOFC) systems for aviation applications have been considered for their use as APUs or powertrains, as standalone systems or in combination with gas turbines, and both fueled by reformed Jet-A or by hydrogen. Most existing studies focus on powertrain performance modelling. In this work, traditional tube-and-wing regional...master thesis 2022
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Rein, Max (author)The increasing complexity of aeronautical systems and the prevailing focus to develop sustainable technological innovations for future aircraft configurations and technologies have emphasized a particular demand on advancing the Multidisciplinary Design Analysis and Optimization (MDAO) technique. MDAO addresses the complex synergy within...master thesis 2022
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Machine Learning Based local Reduced Order Modeling for the prediction of Unsteady Aerodynamic LoadsCatalani, Giovanni (author)Advancements in aircraft performance require increasingly complex design processes and tools. Simulating the unsteady non-linear aerodynamic interaction between a maneuvering aircraft and the surrounding flowfield poses serious challenges. High-Fidelity Computational Fluid Dynamics (CFD) methods, based on the numerical solution of the Navier...master thesis 2022
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Burger, Klaas (author)The aviation industry has grown at a steady rate of 5% per year over the past decades and is projected to continue this growth over the coming years. In sharp contrast stands the increasing concern with the reduction of the environmental impact of flying in the short term. To this end, a fuselage boundary layer ingesting propulsor powered using...master thesis 2022
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van Arnhem, N. (author)It is envisioned that the future generations of regional and short to medium-range aircraft employ a high level of propeller integration to achieve low-emission flight. The objectives of unconventional propeller installations include the enhancement of the airframe aerodynamic efficiency, increasing the propeller efficiency, improving cabin...doctoral thesis 2022
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de Vries, R. (author)Recent developments in the field of hybrid-electric propulsion (HEP) have opened the door to a wide range of novel aircraft configurations with improved energy efficiency. These electrically-driven powertrains enable “distributed propulsion” configurations, in which the aerodynamic interaction between the propulsive devices and the airframe is...doctoral thesis 2022
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Thijssen, R.A. (author), Proesmans, P. (author), Vos, Roelof (author)This paper studies the climate impact of propeller aircraft which are optimized for either minimum direct operating costs, minimum fuel mass, or minimum average temperature response (ATR100). The latter parameter provides a measure of the global warming impact of the aircraft design, considering both CO2 and non-CO2 effects. We study turboprop...conference paper 2022
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Proesmans, P. (author), Vos, Roelof (author)Sustainable aviation fuel (SAF) and liquid hydrogen are currently being studied to replace kerosene in commercial aviation to reduce global warming. In this study, the question is how do the airplane design variables change when minimizing the global warming impact of aircraft powered by SAF or LH2? Secondly, how do these aircraft compare in...conference paper 2022
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Proesmans, P. (author), Vos, Roelof (author)This paper presents a method to assess the key performance indicators of aircraft designed for minimum direct operating costs and aircraft designed for minimum global warming impact. The method comprises a multidisciplinary aircraft optimization algorithm capable of changing wing, engine, and mission design variables while including constraints...journal article 2022
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Barner, N.M. (author), Ghafourpour, L.D. (author), Güverte, M.S. (author), Modesti, D. (author), Hulshoff, S.J. (author)This work presents a transpacific airliner designed for minimal climate impact, incorporating several novel design features. These include open rotor engines, sustainable aviation fuels, natural laminar flow airfoils, and riblets. The design’s configuration and mission have been optimised simultaneously using a combination of standard...journal article 2022
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Onorato, G. (author), Proesmans, P. (author), Hoogreef, M.F.M. (author)Zero-carbon-dioxide-emitting hydrogen-powered aircraft have, in recent decades, come back on the stage as promising protagonists in the fight against global warming. The main cause for the reduced performance of liquid hydrogen aircraft lays in the fuel storage, which demands the use of voluminous and heavy tanks. Literature on the topic shows...journal article 2022
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Hoogreef, M.F.M. (author), Bonnin, V.O. (author)Various research initiatives in hybrid-electric/sustainable aviation typically address only a single vehicle or single vehicle class. However, novel propulsion and energy solutions can be expected to be differently applied in different vehicle classes. The objective of the EU funded research project CHYLA (Credible HYbrid eLectric Aircraft) is...conference paper 2022
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Radhakrishnan, Kaushik (author), Deck, K.T. (author), Proesmans, P. (author), Linke, Florian (author), Yin, F. (author), Grewe, V. (author), Vos, Roelof (author), Lührs, Benjamin (author), Niklaβ, Malte (author), Dedoussi, I.C. (author)The aircraft’s environmental performance on fleet level is so far completely decoupled from the design process. The climate impact from aviation arising from non-CO2 effects are largely independent from CO2 emissions, but rather depend on the atmospheric state. Previously complex climate-chemistry models were used to evaluate the non-CO2...conference paper 2022
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Heidebrecht, A. (author), Burger, K.W. (author), Hoogreef, M.F.M. (author), Vos, Roelof (author), Isikveren, Askin T. (author), Gangoli Rao, A. (author)The concept of an "Auxiliary Power and Propulsion Unit" (APPU) is introduced, which consists of a Boundarylayer ingesting (BLI) propulsor with an engine mounted at the rear of an passenger aircraft fuselage, replacing the Auxiliary Power Unit (APU) and contributing around 10% of total cruise thrust, as well as auxiliary power. This APPU unit is...conference paper 2022
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Boogaart, T.E. (author), Hoogreef, M.F.M. (author), Gangoli Rao, A. (author)Decades of improvements of engine efficiency on internal engine components through better materials, design methods and novel fabrication techniques have resulted in fuel consumption reductions. Another major factor for improving engine fuel consumption has been the increase of bypass ratio. However, this has a significant impact on engine...conference paper 2022
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Juschus, Daniel (author)Fuel cells are one of the promising technical solutions for the first generation of sustainable aircraft. Currently, there are several shortcomings in the literature related to the conceptual and preliminary sizing of the propulsion systems of such aircraft: not only is there a lack of general methods, but also, much less effort is put into the...master thesis 2021
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Feng, Haoyu (author)A tiltrotor has the features of both a fixed-wing aircraft and a helicopter, thereby blending the vertical flight capabilities of helicopters with the speed, altitude, and range of fixed-wing aircraft. However, as an important aspect of piloted aircraft, the handling qualities of tiltrotor aircraft have not been studied extensively. This thesis...master thesis 2021