Searched for: subject:"trajectories"
(1 - 20 of 71)

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Chu, W. (author)
Trajectory optimization is an essential part of space plane mission design. One important aspect of trajectory optimization for re-entry vehicles is to minimize the total heat load at the surface when it returns and the heat flux should remain below certain limit, meanwhile, the vehicle should land at the desired point. The methods used for re...
master thesis 2007
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Chi, N.T. (author)
When a pile is driven into soil, the soil is pushed away which results in significant changes in both stress state and strain state. Using Finite Element Code to simulate the pile installation process has been not yet completely successful partly due to the limited knowledge of the governing behavior of the soil around a displacement pile. An...
master thesis 2008
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De Vogeleer, B.J.T.V. (author)
Some problems in Astrodynamics, such as the ones posed in the several editions of the Global Trajectory Optimisation Competition, include both a combinatorial and a trajectory optimisation problem. The combinatorial problem consists of finding the sequence of a fixed number of asteroids that will allow to find the optimal trajectory. The...
master thesis 2008
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Filipe, N.R.S. (author)
master thesis 2008
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De Ridder, S. (author)
The unpowered entry of a winged re-entry vehicle, such as the HORUS-2B, consists of a hypersonic atmospheric re-entry phase, a Terminal Area Energy Management (TAEM) phase and a approach and landing phase. The TAEM is the subject of this thesis study. During the TAEM, the vehicle is brought to the correct interface position with the landing...
master thesis 2009
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Spaans, C.J. (author)
Optimization of spacecraft trajectories is an interesting area of research, where a lot of development takes place: in the past years, an optimizer called OPTIDUS was implemented at the chair of Astrodynamics at Delft Univierstiy. This tool is able to do optimization of spacecraft trajectories (and other problems) using an evolutionary algorithm...
master thesis 2009
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Tantardini, M.T. (author)
In this contribution, we investigate several trajectory design methods to transfer a spacecraft to the L3 point of the Sun-Earth Circular Restricted 3-Body Problem (CR3BP). Such a study aims at performing an investigation into an area that is so far little explored: the vicinity of L3 has never been the destination of a space mission, and in...
master thesis 2009
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Gorter, H.P.D. (author)
The Global Trajectory Optimization Competition (GTOC) is a competition that seeks to stimulate improvements in the fields of mission analysis and optimization. This research focuses on the problem posed in the second version of the competition, GTOC2. The problem concerns an asteroid tour mission, where the asteroids are subdivided into 4 groups...
master thesis 2010
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Oldenhuis, R.P.S. (author)
In November 2003 the Voyager 1 spacecraft pierced through the Solar system’s termination shock, followed by Voyager 2 in August 2007. These events marked the beginning of interstellar exploration by spacecraft, which caused a wave of renewed interest in the outer heliosphere throughout the scienti?c community. This thesis research investigated...
master thesis 2010
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Pagano, A. (author)
In the past few years, a new spirit for the exploration of the Solar System spread among the space community and reaching the Moon has been set as the first step of this new program. In this frame, going back to the Moon is needed to familiarize with a new way of living in a different environment, adapting to it and testing new technology. It is...
master thesis 2010
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Biljecki, F. (author)
The knowledge of the transportation mode used in a movement trajectory (derived in form of timestamped positions) is critical for applications such as travel behaviour studies. This thesis presents a method for segmenting movement data into single-mode segments and their classification with respect to the used transportation mode. The method...
master thesis 2010
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Boere, M. (author)
Four decades after Neil Armstrong's 1st steps on the Moon the time has come to take it one step further, the permanent occupation of humans on lunar soil. Permanent occupation of humans will revive the dream of exploring space and will open the doors for space flight to Mars or even further. For this reason this project investigates the...
master thesis 2010
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Van der Ham, L. (author)
Instead of the two-body problem commonly used in interplanetary trajectory design, also three bodies can be considered: the satellite, a planet and the Sun. Knowing that planet and Sun orbit one another in almost circular orbits, and the mass of the satellite is negligible compared to the mass of these bodies, the model of the circular...
master thesis 2012
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Engelen, F.M. (author)
These days more and more rockets are developed by companies, students and other amateurs. To assess the safety of these rockets, a method is necessary to estimate the risk of these vehicles quantitatively. Because tools to do so are not freely available, the goal of this thesis is to research methods to quantitatively estimate the risk of...
master thesis 2012
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Musegaas, P. (author)
The optimization of high-thrust interplanetary trajectories continues to draw attention. Especially when both Multiple Gravity Assists (MGA) as well as Deep Space Maneuvers (DSMs) are included, the optimization is typically very difficult. The search space may be characterized by a large number of minima and is furthermore very sensitive to...
master thesis 2013
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Van Winden, K.B.A. (author)
There are many applications that use maps, and more detailed the maps are, more applications can benefit from the map. Many maps are still manually created and also the underlying attributes are informed in a manual process. This thesis presents a method to automatically derive and update attribute road data by mining and analyzing movement...
master thesis 2014
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Roegiers, T.G.R. (author)
Since the development of the exponential sinusoid for low-thrust trajectory design by Petropoulos and Longuski [2004], more shape-based methods have emerged that ease up the work of a mission analyst. These methods are the ideal tool to generate a quick and almost complete overview of a large search space and are useful for producing first...
master thesis 2014
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Van Duijkeren, N.J. (author)
The so-called A-double long heavy vehicle combination is a 32 meter long and up to 80 tonnes heavy double-trailer truck widely used in Canada and Australia today, and will be more abundant on the road also in Europe in the near future. They have the potential to decrease road transport cost, traffic congestion and generate lower emissions than...
master thesis 2014
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Zhong, Z. (author)
The long-haul flights of airlines are impacted by the en-route wind fields. Flights on the same route with different directions may have significantly different flight performances. It may benefit to airlines in terms of fuel cost and on-time performance if the optimal long-haul routes are able to plan. However, the wind direction and strength...
master thesis 2014
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De Smet, S. (author)
The goal of this thesis research has been the improvement of a validated, robust low-thrust optimization tool for interplanetary trajectory design, written during the author's internship. This improved tool has then been applied to design crewed Martian flyby missions. Such a mission is a crucial step within the flexible path scenario for human...
master thesis 2014
Searched for: subject:"trajectories"
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