- document
-
Duplay, Emmanuel (author)A laser-sustained plasma (LSP) generator capable of operating as a laser-thermal thruster was designed and tested. The apparatus was powered by a 3-kW 1070-nm fiber-optic laser and was operated with argon gas. The laser absorption, radiated spectrum, and change in static pressure were recorded, and high-speed video footage of the LSP was...master thesis 2024
- document
-
Singh, Sampuran (author)Small satellites require efficient propulsion systems for attitude and orbit control. This thesis focuses on the development and characterization of two distinct types of micro-resistojet thrusters, namely Vaporizing Liquid Micro-resistojet (VLM) and Low Pressure Micro-resistojet (LPM). Both concepts are developed at TU Delft and are designed to...master thesis 2023
- document
-
Houtman, Willis (author)Swimming is a sport where an incremental gain in performance can lead to either a medal or leaving the swimmer empty-handed. In the front crawl, water is driven backwards by the limbs where most propulsive forces come from the hands. Two main stroke patterns can be observed, the ”straight I pull” is commonly taught to generate forces with drag,...master thesis 2023
- document
-
van den Berg, Ruben (author)The electric-pump cycle is a rocket engine configuration that uses an electric motor to power the pumps instead of a turbine. This offers several expected advantages such as simpler design, lower development costs, and easier restartability, but comes with reduced performance compared to conventional cycles. Previous research has primarily...master thesis 2023
- document
- Bosman, Bastiaan (author) master thesis 2023
- document
-
Geertsma, R.D. (author)Editorial Special Issue: Naval Engineering and Ship Control IIcontribution to periodical 2023
- 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
-
Tran, Minh Tâm Kevin (author), Yang, Ming Da (author), van Nieuwburg, William (author), van Spreuwel, Bram (author)A 1:5 scaled rowing boat had been designed by a previous research group to determine the performance of rowing blades with different sizes and blade angles. In this research modifications were done to allow more control of the rowing motion. The aim of this study is to assess whether an angled oar blade can reach faster speeds with the same...bachelor thesis 2022
- document
-
Rooijmans, Robert (author)The main resistive force acting on the wheelchair during manual wheelchair propulsion is the rolling resistance. The magnitude of this rolling resistance is heavily influenced by the actions of the wheelchair user. By optimizing how wheelchair athletes move, this rolling resistance can be minimized, thereby improving their effective power output...master thesis 2021
- document
-
Cragg, Patrick (author)Traditional fuel system designs do not provide the combination of sucient cooling and low system weight at the Mach 5+ range. Thus, if currently available non-cryogenic propellants are to be employed, an additional heat sink source beyond a simple physical heat sink is required to meet the regenerative cooling demand. The endothermic...master thesis 2021
- document
-
Grift, E.J. (author), Tummers, M.J. (author), Westerweel, J. (author)This paper presents the results of the time resolved flow field measurements around a realistic rowing oar blade that moves along a realistic path through water. To the authors' knowledge no prior account of this complex flow field has been given. Simultaneously with the flow field measurements, the hydrodynamic forces acting on the blade...journal article 2021
- document
-
Versteeg, Huib (author)A key element in the development of more capable nano- and pico-satellites is the development of high specific impulse micro-propulsion systems, which allow for more challenging space missions to be flown. One such system being developed at TU Delft is a micro-resistojet with a planar supersonic nozzle geometry. This is currently fabricated by...master thesis 2020
- document
-
Martinus, Tom (author)Dynamic model parameters (e.g. governor) are uncertain and hard to validate. A possible solution can be the usage of parameter identification techniques. So far parameter identification techniques have proved their potential in identifying model parameters on model scale, but this has never been applied on a full-scale propulsion system. During...master thesis 2020
- document
-
van der Kroft, Koen (author)Marine propulsion systems with diesel engines face continuous variations in propeller shaft speed and torque during operation, due to waves and changing rudder and water inflow angles. Traditional propulsion control systems do not take these variations into account, and attempt to maintain a constant shaft speed. These changing torques, in...master thesis 2020
- document
-
Rotteveel, E. (author)This research focuses on identifying the most important stern shape aspects, with regard to resistance and propulsion power, of inland ships. Such information should help designers to determine which hull form aspect to adjust in case design requirements need them to do so. The information is obtained by firstly conducting a large series of CFD...doctoral thesis 2019
- document
-
Schouten, Ewout (author)In this thesis the differences between the monohull and semi-submersible are investigated. For a general heavy lift crane operation and its operational profile, the difference is performance and total cost are calculated. These are used to determine the turning point, the point where the semi-submersible is more favourable for a heavy lift crane...master thesis 2018
- document
-
Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)Regulatory demands on ship designs, such as emission and manoeuvrability requirements, are becoming increasingly stringent, raising the need for advanced methods to predict and assess dynamic propulsion plant behaviour of a new design. At present, model scale experiments and numerical simulations are not able to predict this behaviour in full...conference paper 2018
- document
-
Schreier, S. (author), Poelma, C. (author)Sloshing impacts are highly dynamic and localized events. One problem in the measurement of sloshing impact pressures is the limited spatial resolution that can be achieved with current sensors. To overcome this hurdle a project was started to develop new sensors that allow to increase the spatial resolution of pressure measurements by a factor...conference paper 2018
- document
-
van der Kolk, N.J. (author), Keuning, J.A. (author), Huijsmans, R.H.M. (author)Wind energy as an auxiliary form of propulsion for commercial ships has again become of great interest as a possible response to volatile fuel prices and increasingly stringent environmental regulations. A well-founded performance prediction tool is a key prerequisite for the further development of this promising technology, and with the support...conference paper 2016
- document
-
Rotte, G.M. (author), Zverkhovskyi, Oleksandr (author), Kerkvliet, Maarten (author), van Terwisga, T.J.C. (author)Air lubrication techniques are very promising in reducing ship drag. It has been demonstrated that air cavity applications can realise propulsive power reduction percentages of 10-20% due to the reduction of the frictional resistance [1, 2]. However, a complete understanding of the two-phase flow physics involved with air cavity flows is still...conference paper 2016