- document
-
Bourgois, Justin (author)The use of additive manufacturing (AM) can potentially offer significant benefits to the design and performance of resistojet components but has so far only seen limited research in this application. The goal of this study was to investigate the possibility of 3D printing a functional resistojet heating chamber and the potential benefits that...master thesis 2023
- document
-
Souflis-Rigas, A.S.R. (author), Pruyn, J.F.J. (author), Kana, A.A. (author)The adoption of alternative energy carriers is one of the key ways to meet the increasingly stricter emission regulations faced by shipping vessels from the international maritime organisation (IMO) and European Commission. To support this objective, this study examines the challenges and uncertainties associated with implementing a methanol...conference paper 2023
- document
-
de Vries, W.H.K. (author), van der Slikke, R.M.A. (author), van Dijk, M.P. (author), Arnet, Ursina (author)Daily wheelchair ambulation is seen as a risk factor for shoulder problems, which are prevalent in manual wheelchair users. To examine the long-term effect of shoulder load from daily wheelchair ambulation on shoulder problems, quantification is required in real-life settings. In this study, we describe and validate a comprehensive and...journal article 2023
- document
-
Piaggio, Benedetto (author), Garofano, V. (author), Donnarumma, Silvia (author), Alessandri, Angelo (author), Negenborn, R.R. (author), Martelli, Michele (author)A novel follow-the-leader approach for azimuth-driven vessels is devised and experimentally tested in a model-scale outdoor scenario. The vessels are equipped with global navigation satellite and inertial navigation systems. A line-of-sight algorithm ensures the yaw-check ability of the follower vessel along the leader's path, while a speed...journal article 2023
- document
-
Latorre, Alejandro (author), Soeiro, Thiago B. (author), Geertsma, R.D. (author), Coraddu, A. (author), Polinder, H. (author)This article gives an overview of challenges in primary distribution, protections, and power scalability for shipboard dc systems. Given that dc technology is in development, several aspects of shipboard systems have not yet been sufficiently devised to ensure the protection and efficiency demanded. Several issues in dc systems arise from the...journal article 2023
- document
-
Vasilikis, N. (author), Geertsma, R.D. (author), Coraddu, A. (author)Maritime industry has set ambitious goals to drastically reduce its greenhouse gas emissions through stipulating and enforcing a number of energy assessment measures. Unfortunately, measures like the EEDI, EEXI, SEEMP and CII do not account for the operational and environmental uncertainty of operations at sea, even though they do provide a...journal article 2023
- document
-
Odendaal, Kirsten (author), Alkemade, Aaron (author), Kana, A.A. (author)The adverse human contribution to global climate change has forced the yachting industry to acknowledge the need to reduce its environmental impact due to the client's increasing pressure and potential future regulations to limit the ecological effects. Unfortunately, current real-world data presents a significant disparity between predicted...journal article 2023
- document
-
Geertsma, R.D. (author)Editorial Special Issue: Naval Engineering and Ship Control IIcontribution to periodical 2023
- document
-
Giordano, A. (author), Cervone, A. (author)Interplanetary CubeSat missions are currently becoming more popular, with a significant number of recently planned missions. The context of this paper is a Mars mission, starting from a parking orbit around Earth: the adoption of a chemical propulsion system for the Earth-Mars transfer phase is investigated, considering the recent...journal article 2023
- document
-
Cervone, A. (author)This chapter discusses the current status of chemical and cold gas micro-propulsion systems for small satellites, with a particular focus on CubeSats. Initially, a short historical background is presented, focusing specifically on the precursor cold gas systems developed and demonstrated on small spacecraft in the decade 2000-10. A brief...book chapter 2023
- document
-
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
- document
-
Duplay, Emmanuel (author)The existing literature on Laser-Thermal Propulsion (LTP) and associated concepts such as Directed-Energy Propulsion (DEP) and Laser-Sustained Plasma (LSP) is reviewed in preparation for an experimental thesis project on LTP.student report 2022
- document
-
Mertens, Emily (author)Global warming is a topic of major concern the last decade and for reason the IMO adopted a strategy to reduce the emissions of greenhouse gasses of vessels. In order to meet the IMO requirements ships propulsion systems need to become more sustainable. An option to reduce emission is the implementation of fuel cells running on hydrogen together...master thesis 2022
- document
-
Lagendijk, Laurens-Jan (author)The global emission of harmful greenhouse gasses has to be reduced. Commercial shipping contributes to these emissions by using fossil fuel as the only energy source to provide propulsion and power auxiliary systems. In order to reduce fuel consumption, much research is focused on increasing the efficiency of the propulsion system and reducing...master thesis 2022
- document
-
Waste heat recovery of future marine propulsion systems: A techno-economic process-oriented approachHerweijer, Lex (author)In response to climate change, the marine sector is increasingly focused on the energy transition. New marine power plants operating more efficiently and on cleaner fuels are receiving significantly more attention. While the transition to different power plants and fuels results in reduced fossil fuel consumption and emissions, waste heat...master thesis 2022
- document
-
Karagiorgis, Savvas (author)A major transition became necessary for the maritime industry to meet the IMO’s targets for mitigating the carbon footprint of the sector by at least 50% by 2050. One of the promising methods to lower the emissions is the ship's hybridization. An enormous increase in pilot and demonstration projects for that purpose is being observed. This...master thesis 2022
- document
-
Jensen, Courtland (author)Wind-assisted ships are installed with wind propulsors capable of generating thrust for aiding the propulsion of the ship, with the purpose of saving fuel by reducing the required propeller speed and thus engine power. Wind-assisted ships are becoming more common due to high fuel prices and rising environmental concerns. The subject of this...master thesis 2022
- document
-
Tambağ, Emre (author)With hydrazine on the list of "substances of very high concern" by the European Chemicals Agency; hence alternative (storable) liquid rocket propellants are being developed which are less hazardous. During this feasibility study, experiments have been performed with a thermal ignition system in combination with hydrogen peroxide and ethanol as...master thesis 2022
- document
-
van den Bogerd, Gerrit (author)Over the coming decades the worldwide fleet of ships will have to change to reduce emissions. Hybridisation of the propulsion system is a stepping stone to full electrification, which is required to reduce emissions of the maritime sector to zero. In hybrid propulsion systems, clutches are used to switch between drive engines when transitioning...master thesis 2022
- document
-
de Graaff, Ruben (author), Fontenai, Nicolas (author)In 2019 the European Aviation Environmental Report stated showed a relative increase in CO2 emissions of 16% compared to 2005 to 2017. It also stated that an increase of 42% is expected according to current models. Aviation is thus a big sector of the global warming problem. The solution to this is to go full electric. There are already more...bachelor thesis 2022