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Sun, Junzi (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)With the increasing availability of ADS-B transponders on commercial aircraft, as well as the rapidly growing deployment of ground stations that provide public access to their data, accessing open aircraft flight data is becoming easier for researchers. Given the large number of operational aircraft, significant amounts of flight data can be...conference paper 2016
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Sun, Junzi (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)Aircraft mass is an important parameter in many ways, either to build aircraft performance models, to predict flight trajectories, or to simulate air traffic. Mass data is usually considered as sensitive information for airlines and is, therefore, not disclosed to researchers publicly. In this paper, we use two methods to infer the mass of an...conference paper 2016
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Metz, I.C. (author), Mühlhausen, T (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)Bird strikes have operational impacts and cause economic loss to the aviation industry. In the worst case, the damages resulting from bird strikes lead to crashes. The highest risk for bird strikes lies in the area below 3000 ft and thus mainly in airport environments. Despite intense efforts from the airports in controlling the local bird...conference paper 2016
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- Metz, I.C. (author), Ellerbroek, Joost (author), Mühlhausen, T (author), Kügler, D. (author), Hoekstra, J.M. (author) poster 2016
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Hoekstra, J.M. (author), Ellerbroek, Joost (author)To advance ATM research as a science, ATM research results should be made more comparable. A possible way to do this is to share tools and data. This paper presents a project that investigates the feasibility of a fully open-source and open-data approach to air traffic simulation. Here, the first of the two main challenges is to achieve a high...conference paper 2016
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Hoekstra, J.M. (author), Maas, J.B. (author), Tra, M.A.P. (author), Sunil, E. (author)In many ATM studies experiments are performed to determine the capacity. This paper looks at the effect of airspace design on the capacity. Using an algebraic approach a relation is derived between the design parameters of a layered airspace design and the capacity of the airspace. The validity of the assumptions which are used in this...conference paper 2016
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Maas, J.B. (author), Sunil, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Tra, M.A.P. (author)Several conflict resolution algorithms for airborne self-separation rely on principles derived from the repulsive forces that exist between similarly charged particles. This research investigates whether the performance of the Modified Voltage Potential algorithm, which is based on this algorithm, can be improved using bio-inspired swarming...conference paper 2016
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Sunil, E. (author), Maas, J.B. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Tra, M.A.P. (author)The work that is presented in this paper is part of an ongoing study on the relationship between structure and capacity of decentralized airspace concepts. In this paper, the effect of traffic stability, which considers the occurrence of conflict chain reactions as a result of conflict resolution maneuvers, on capacity is examined closely. Using...conference paper 2016
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Sunil, E. (author), Hoekstra, J.M. (author), Ellerbroek, Joost (author), Bussink, F (author), Vidosavljevic, A (author), Nieuwenhuisen, D (author)Airspace structure can be used as a procedural mechanism for a priori separation and organization of en-route air traffic. Although many studies have explored novel structuring methods to increase en-route airspace capacity, the relationship between the level of structuring of traffic and airspace capacity is not well established. To better...conference paper 2016
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Dol, C.P. (author), Mazo, Estrella Cruz (author), Lambea Llop, N. (author), Hoekstra, J.S.C.M. (author), Cano Fuentes, G.I. (author), Etxarri, Aitziber Etxezarreta (author)The Spanish home ownership sector has been hit hard by the economic crisis. Repossessions stand at around half a million in the period from 2008 to 2014. This article investigates how the authorities, both at the level of the Spanish state and of the autonomous communities (regions), have responded to this problem. We investigated whether...journal article 2016
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Metz, I.C. (author), Hoekstra, J.M. (author), Ellerbroek, Joost (author), Kugler, D. (author)The BlueSky Open Air Tra_c Simulator developed by the Control & Simulation section of TU Delft aims at supporting research for analysing Air Tra_c Management concepts by providing an open source simulation platform. The goal of this study was to complement BlueSky with aircraft performance models in order to enable performance- related Air...conference paper 2016
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Hoekstra, J.S.C.M. (author), Marais, L (author)Subsidised housing often creates a segmented housing market, with some home owners falling into a gap between the subsidised and non-subsidised types. This gap particularly affects middle-income buyers, whose income may be too high to qualify for subsidy but too low to buy a non-subsidised house. Western Europe has policies and affordable...journal article 2016
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Langejan, T.P. (author), Sunil, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)Most Free-Flight concepts rely on self-separation by means of airborne Conflict Detection and Resolution (CD&R) algorithms. A key enabling technology for airborne CD&R is the Automatic Dependent Surveillance-Broadcast (ADS-B) system, which is used for direct state information exchange between aircraft. Similar to other communication...conference paper 2016
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Nijhuis, S. (author), Stolk, E.H. (author), Hoekstra, M.J. (author)The Department of Urbanism at the Faculty of Architecture and Built Environment at the Delft University of Technology has a long tradition in educating generations of internationally oriented designers, planners and researchers in urbanism. Here the domain of urbanism is defined as an interdisciplinary approach that engages in real-world...journal article 2016
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Poot, Vincent (author), Hoekstra, M. (author), Geleijnse, M.A.A. (author), van Loosdrecht, Mark C.M. (author), Pérez, Julio (author)Partial nitritation was stably achieved in a bench-scale airlift reactor (1.5L) containing granular sludge. Continuous operation at 20 °C treating low-strength synthetic wastewater (50 mg N-NH<sub>4</sub> <sup>+</sup>/L and no COD) achieved nitrogen loading rates of 0.8 g N-NH<sub>4</sub> <sup>+</sup>/(L·d) during partial nitritation. The...journal article 2016
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Jenie, Y.I. (author), van Kampen, E. (author), de Visser, C.C. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)This paper proposes a novel avoidance method called the three-dimensional velocity obstacle method. The method is designed for unmanned aerial vehicle applications, in particular to autonomously handle uncoordinated multiple encounters in an integrated airspace, by exploiting the limited space in a three-dimensional manner. The method is a three...journal article 2016
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Jenie, Y.I. (author), van Kampen, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)This paper proposes a taxonomy of Conflict Detection and Resolution (CD&R) approaches for Unmanned Aerial Vehicles (UAV) operation in an integrated airspace. Possible approaches for UAVs are surveyed and broken down based on their types of surveillance, coordination, maneuver, and autonomy. The factors are combined back selectively, with...journal article 2016
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- Jenie, Y.I. (author), van Kampen, E. (author), de Visser, C.C. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author) conference paper 2016
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Droste, B. (author), Van Gent, R. (author), Straathof, M. (author), Steenhuizen, D. (author), Kotsonis, M. (author), Geuskens, F. (author), Shroff, S. (author), Guerriero, G. (author), Gangoli Rao, A. (author), Lada, C. (author), Dewanji, D. (author), Yu, H. (author), Schroijen, M. (author), Hoekstra, J. (author), The CleanEra Team (author)The CleanEra project was initiated with the goal of developing revolutionary ideas for civil aviation. These ideas were to offer solutions which would limit and reduce some of the negative aspects of aviation, namely: emissions and the use of resources. This book presents you with the highlights of this journey in search of new technologies for...book 2015
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Hoekstra, M.J. (author), Rooij, R.M. (author)In de wandelgangen van de faculteit komt de toekomstige internationalisering regelmatig voorbij. Om in een later stadium daadwerkelijk beslissingen te kunnen maken over de verengelsing van de bachelor, is discussie nodig. Eerder publiceerde Bnieuws een gesprek tussen Directeur Onderwijs Roberto Cavallo en toenmalig voorzitter van de Facultaire...journal article 2015