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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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- Jenie, Y.I. (author), van Kampen, E. (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
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Jenie, Y.I. (author), Van Kampen, E.J. (author), De Visser, C.C. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)Autonomous systems are required in order to enable UAVs to conduct self-separation and collision avoidance, especially for flights within the civil airspace system. A method called the Velocity Obstacle Method can provide the necessary situational awareness for UAVs in a dynamic environment, and can help to generate a deconflicting maneuver.This...conference paper 2015
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Conflict detection and resolution system architecture for unmanned aerial vehicles in civil airspaceJenie, Y.I. (author), van Kampen, E.J. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)A novel architecture for a general Unmanned Aerial Vehicle (UAV) Conflict Detection and Resolution (CD&R) system, in the context of their integration into the civilian airspace, is proposed in this paper. The architecture consists of layers of safety approaches ,each representing a combination of different methods for surveillance, coordination,...conference paper 2015
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Sunil, E. (author), Hoekstra, J.M. (author), Ellerbroek, J. (author), Bussink, F. (author), Nieuwenhuisen, D. (author), Vidosavljevic, A. (author), Kern, S. (author)Personal and unmanned aerial vehicles have received increasing media attention over the last decade. As a result of the growing excitement for these two aircraft types, many within and outside the aerospace industry envision a future in which large numbers of small aircraft fly over urban areas. With this vision for the future, the question...conference paper 2015
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Brinkman, W.P. (author), Hoekstra, A.R.D. (author), Van Egmond, R. (author)Three studies were conducted to examine the effect of audio on people's experience in a virtual world. The first study showed that people could distinguish between mono, stereo, Dolby surround and 3D audio of a wasp. The second study found significant effects for audio techniques on people's self-reported anxiety, presence, and spatial...conference paper 2015
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Arntzen, M. (author), Aalmoes, R. (author), Bussink, F. (author), Sunil, E. (author), Hoekstra, J.M. (author)The development of Personal aerial vehicles and unmanned aerial vehicles are expected to have a considerable influence on the development of future airspace design around large cities. In the Metropolis project, four different concepts for airspace design are assessed for a (metropolitan) city of the future. The different noise impact on the...conference paper 2015
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Elsinga, M.G. (author), Haffner, M.E.A. (author), Hoekstra, J.S.C.M. (author)Onderzoek uitgevoerd in opdracht van Platform 31 (in samenwerking met Corpovenista en het Ministerie van Binnenlandse Zaken en Koninkrijksrelaties).report 2015
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Haffner, M.E.A. (author), Hoekstra, J.S.C.M. (author), Tang, C. (author), Oxley, M. (author)In the United Kingdom, social landlords are facing decreasing governmental financial support for them to fulfil their role in the provision of social housing, which has led to increasing pressure on them to rely on private capital. Traditionally, bank loans were the main source of private capital, but after the Global Financial Crisis (GFC) and...conference paper 2015
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Etxezarreta Etxarri, A. (author), Hoekstra, J.S.C.M. (author), Cano Fuentes, G. (author), Cruz Mazo, E. (author), Dol, C.P. (author)The main purpose of this paper is to offer a new theoretical framework to the Spanish housing studies. This article combines different traditions and different frameworks (social innovation, social economy), in order to position the crisis of evictions in Spain and the emergence of housing co-operatives in a new theoretical context. In the first...conference paper 2015