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Barahona Lopez, M. (author), van de Weijer, A.F. (author), Rius Vidales, A.F. (author), Kotsonis, M. (author)One of the most critical technological challenges embedded in the electrification of future aircraft revolves around the thermal management of batteries and fuel cells. An innovative idea involves using the aircraft’s aerodynamic surfaces to dissipate the extra heat, thereby reducing the impact that traditional thermal management systems (e.g....conference paper 2024
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Bier, H.H. (author), Hidding, A.J. (author), Veer, F.A. (author), Peternel, L. (author), Schmehl, R. (author), Cervone, A. (author), Verma, M.K. (author)In order for off-Earth top surface structures built from regolith to protect astronauts from radiation, they need to be several metres thick. In a feasibility study, funded by the European Space Agency, Technical University Delft (TUD aka TU Delft) explored the possibility of building in empty lava tubes to create rhizomatic subsurface habitats....book chapter 2024
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Heiligers, M.J. (author), Rotmans, T.J. (author)This paper investigates trajectories within the Alpha Centauri system to reach planet Proxima b. These trajectories come in the form of connections between the classical Lagrange points of Alpha-Centauri’s binary system (composed of the stars Alpha Centauri A and B, AC-A and AC-B) and the classical Lagrange points of the Alpha Centauri C (AC-C)...conference paper 2023
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Garcia Bonilla, J. (author), Carzana, L. (author), Heiligers, M.J. (author)This paper addresses the significance of uncertainty quantification in solar-sail missions, focusing on the uncertainties associated with the sail’s optical coefficients, structural deformation, and attitude profiles for missions in the Earth environment. Due to the relatively low technological maturity of solar-sailing systems, understanding...conference paper 2023
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Rojas-Arias, J. S. (author), Noiri, A. (author), Stano, P. (author), Nakajima, T. (author), Yoneda, J. (author), Takeda, K. (author), Kobayashi, T. (author), Sammak, A. (author), Scappucci, G. (author)We detect correlations in qubit-energy fluctuations of non-neighboring qubits defined in isotopically purified Si/Si-Ge quantum dots. At low frequencies (where the noise is strongest), the correlation coefficient reaches 10% for a next-nearest-neighbor qubit-pair separated by 200 nm. Correlations with the charge-sensor signal reach up to 70%,...journal article 2023
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Oh, J.J. (author), Ammu, S.K. (author), Vriend-Harwig, V.D. (author), Kieffer, R.Y. (author), Dr. Kleiner, F.K. (author), Balasubramanian, S. (author), Karana, E. (author), Masania, K. (author), Aubin-Tam, M.E. (author)Engineered living materials (ELMs) are a novel class of functional materials that typically feature spatial confinement of living components within an inert polymer matrix to recreate biological functions. Understanding the growth and spatial configuration of cellular populations within a matrix is crucial to predicting and improving their...journal article 2023
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Teruna, C. (author)Public annoyances due to noise emission in aviation and wind energy sectors are expected to become more severe in the near future with increasing number of civilian flights and wind turbine installations. Such trend demands for deeper investigations into the noise generation mechanisms and the means to mitigate them. This dissertation addresses...doctoral thesis 2022
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Reggiani, G. (author), Salomons, A.M. (author), Sterk, M.A.H. (author), O'Hern, Steve (author), Daamen, W. (author), Yuan, Y. (author), Hoogendoorn, S.P. (author)Similarly to Maslow’s pyramid of human needs, we theorize that cities have a pyramid of bicycle network needs that depends on their level of bicycle culture. As an increasing number of data sources emerge for bicycle data collection, transport authorities face the challenge of understanding how to use the data and which data sources are fit for...journal article 2022
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De Breuker, R. (author), Benedictus, R. (author), Bisagni, C. (author), Boneschansker, I. (author), Melkert, J.A. (author), Snellen, M. (author), Veldhuis, L.L.M. (author), Verdegaal, F.M. (author), Visser, P.N.A.M. (author), Werij, H.G.C. (author)The Faculty of Aerospace Engineering is one of eight faculties at Delft University of Technology. It is one of the most comprehensive academic and innovation communities worldwide focusing on aerospace engineering. Its 120 professors and 70 researchers are mentoring and teaching around 2,800 BSc/MSc students and more than 350 PhD candidates...journal article 2022
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Lima Pereira, L.T. (author), Ragni, D. (author), Avallone, F. (author), Scarano, F. (author)The impact of aerodynamic loading on a serrated trailing edge is studied experimentally. Aerodynamic and acoustic measurements are conducted on a sawtooth-shaped trailing edge, retrofitted to a flat plate featuring a trailing-edge flap, and placed at incidence to the free-stream flow. The turbulent flow across the trailing edge is inspected...journal article 2022
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Casacuberta Puig, J. (author), Hickel, S. (author), Westerbeek, S.H.J. (author), Kotsonis, M. (author)The interaction between forward-facing steps of several heights and a pre-existing critical stationary crossflow instability of a swept-wing boundary layer is analysed. Direct numerical simulations (DNS) are performed of the incompressible three-dimensional laminar base flow and the stationary distorted flow that arise from the interaction...journal article 2022
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Wang, C. (author), Wang, S. (author), de Croon, G.C.H.E. (author), Hamaza, S. (author)Flapping wing micro aerial vehicles (FWMAVs) are known for their flight agility and maneuverability. These bio-inspired and lightweight flying robots still present limitations in their ability to fly in direct wind and gusts, as their stability is severely compromised in contrast with their biological counterparts. To this end, this work aims at...journal article 2022
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Vortex-model-based Multi-objective Optimization of Winglets for Wind Turbines using Machine LearningLeenders, N.A. (author), Yu, W. (author), Gaunaa, Mac (author), Caboni, Marco (author), Ferreira, Carlos (author)Different Design Driving Load constraints (DDLs), are explored in this work to determine under which constraints and conditions a winglet can have an added value to the wind turbine blade design. Multi-objective Bayesian optimization is used to maximize the rotor's power production while minimizing the flapwise DDLs. Surrogate models, created...journal article 2022
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Mertens, C. (author), Costa Fernandez, J.L. (author), Sciacchitano, A. (author), van Oudheusden, B.W. (author), Sodja, J. (author)The aerodynamic loads on a flexible wing in terms of the surface pressure distribution and the lift force along the span are determined experimentally based on non-intrusive Lagrangian particle tracking (LPT) measurements. As the flexible wing deforms under the aerodynamic loads, its deformed shape is first reconstructed based on structural LPT...conference paper 2021
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Gangoli Rao, A. (author), Yin, F. (author), Werij, H.G.C. (author)Aviation is the backbone of our modern society. In 2019, around 4.5 billion passengers travelled through the air. However, at the same time, aviation was also responsible for around 5% of anthropogenic causes of global warming. The impact of the COVID-19 pandemic on the aviation sector in the short term is clearly very high, but the long-term...review 2020
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Werij, H.G.C. (author)To counter the climate effects of flying, we must start a revolution in aviation.<br/>Solutions must and will be found. I believe we’re at a new dawn of aviation.journal article 2019
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Santiago Patterson, J. (author), Laguarda, L. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author), Hickel, S. (author)An experimental investigation of shock-shock interactions has been conducted with the aim of studying the transition between Regular (RI) and Mach (MI) interactions induced by a variation of the inflow Mach number. The experiments were conducted in the TST-27 wind tunnel at Delft University of Technology. For all cases, the wind tunnel runs were...conference paper 2019
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Merino Martinez, R. (author), Sijtsma, P. (author), Rubio Carpio, A. (author), Zamponi, R. (author), Luesutthiviboon, S. (author), Malgoezar, A.M.N. (author), Snellen, M. (author), Schram, Christophe (author), Simons, D.G. (author)Most acoustic imaging methods assume the presence of point sound sources and, hence, may fail to correctly estimate the sound emissions of distributed sound sources, such as trailing-edge noise. In this contribution, three integration techniques are suggested to overcome this issue based on models considering a single point source, a line...journal article 2019
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Voskuijl, M. (author), Muhammad Ridho Said, Muhammad Ridho (author), Pandher, Jaspreet (author), van Tooren, Michel (author), Richards, Blin (author)Several morphing unmanned aircraft systems which can be deployed in-flight are currently being developed for a variety of missions. Key to a successful in-flight deployment of these aircraft is that they enter a stable and controllable flight phase following a potentially highly dynamic transition phase without exceeding structural limitations....conference paper 2019
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Abobeih, M.H.M.A. (author), Cramer, J. (author), Bakker, M.V. (author), Kalb, N. (author), Markham, M. (author), Twitchen, D. J. (author), Taminiau, T.H. (author)Single electron spins coupled to multiple nuclear spins provide promising multi-qubit registers for quantum sensing and quantum networks. The obtainable level of control is determined by how well the electron spin can be selectively coupled to, and decoupled from, the surrounding nuclear spins. Here we realize a coherence time exceeding a...journal article 2018