Searched for: subject%3A%22Re%255C-entry%22
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Brito Lima, Pedro (author)
This thesis explores the feasibility of aerocapture manoeuvres at Venus, focusing on the challenges for an autonomous Guidance and Control (G&C) system, including a partial Navigation system simulation. Aerocapture leverages atmospheric drag for orbit insertion and presents a cost-effective alternative to traditional propulsive methods. The...
master thesis 2023
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Geul, J. (author)
The goal of the research is to improve space situational awareness (SSA) for space debris objects, and to make space operations more sustainable and remain possible in the future. Vital to this awareness is understanding which objects are present, through space surveillance and tracking (SST), and where these objects will be in the future,...
doctoral thesis 2023
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Agante de Carvalho, José Rui (author)
Waveriders are high-lifting hypersonic configurations with great potential to become a future reusable launch vehicle concept. However, in a re-entry flight scenario, standard waverider designs face challenges such as stability, controllability, heat load management, and performance at off-design conditions. In this research, a baseline...
master thesis 2023
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Jelvehgaran Esfahani, M. (author), O'Hara, Ryan (author), Prakosa, Adityo (author), Chrispin, Jonathan (author), Boink, Gerard J.J. (author), Trayanova, Natalia (author), Coronel, Ruben (author), Oostendorp, Thom (author)
Background: Ventricular tachycardias (VTs) in patients with myocardial infarction (MI) are often treated with catheter ablation. However, the VT induction during this procedure does not always identify all of the relevant activation pathways or may not be possible or tolerated. The re-entry vulnerability index (RVI) quantifies regional...
journal article 2023
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Olberts, Ernst (author)
In this thesis, the achievable performance and limitations of a Synthetic Aperture Radar (SAR) seeker on an Anti-Ship Ballistic Missile (ASBM) for a set of parameters has been investigated. This was achieved by modelling the dynamics of an ASBM and the constraints related to the acquisition requirements of a maritime surface target in the ...
master thesis 2022
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Meeuwissen, Bart (author)
Re-entry mission design remains an active field of study to safely return space missions back to Earth. With the developments in on-board computers, mission design and especially optimization of these missions has been performed numerically at an increasing rate at the cost of computing power. Analytical second-order methods have previously been...
master thesis 2021
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Dominguez Calabuig, Guillermo Joaquin (author)
Space safety and hazards reduction techniques are each day becoming more important in the design and operation of space transportation vehicles. One way to mitigate risks is to use advanced guidance strategies to centralise mission planning and guidance-navigation and control. Successive convexification is a technique suitable for this purpose...
master thesis 2020
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Bunt, Riccardo (author)
During the design and analysis of a mission characterised by re-entry flight, consistent effort and resources are invested in the definition of the aerodynamic database of the re-entry vehicle. An aerodynamic database collects a set of dimensionless coefficients that describe the interaction of the vehicle's geometry and airflow, and an accurate...
master thesis 2019
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Carvalho Barreira Lages Ribeiro, André (author)
Orbital plane changes require a considerable amount of propellant to be completed if the traditional fully propulsive maneuver is used. The cost associated with this type of maneuvers is one of its major drawbacks, and performing an inclination change in orbit would require a large part of the total mass budget of the mission. Moreover,...
master thesis 2019
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Wolfs, Rimsky (author)
Meteors have been observed by accident from geostationary orbit (GEO). It is of interest for surveillance, meteor science and the updating of empirical models to know what instruments are needed on a GEO satellite to observe meteors and re-entering capsules in Earth ‘s atmosphere. A re-entry simulation code is written to fill the gap of missing...
master thesis 2019
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Lucassen, Koen (author)
An analysis of attitude controller concepts, including four attitude flight controllers, for the re-entry of the HORUS-2b. The four concerning attitude flight controller concepts are the benchmark Linear Quadratic Regulator (LQR), Model predictive Controller, Incremental Non-linear Dynamic Inversion (INDI) and Sliding Mode Controller. Each...
master thesis 2019
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Fodde, Iosto (author)
Currently one of the major drawbacks of interplanetary travel is the cost of these types of missions. Mission to extra-terrestrial bodies require a large amount of propellant to complete, which often takes up a large part of the mass budget of the spacecraft. This requires larger launchers to be used to get the spacecraft into the required orbit...
master thesis 2018
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Hogervorst, Frank (author)
Currently, an increasing amount of debris is floating in Low Earth Orbit (LEO) endangering space operations. To limit the contribution of non-operational satellites to the space debris problem a semi-controlled end-of-life de-orbit strategy can be employed. In this strategy the satellite is controlled from the end-of-life orbit down to low...
master thesis 2018
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Rijnsdorp, J. (author)
Re-entry is a term that is applied when one would like to transport some (human) payload from an orbit around a certain body towards the surface of that body. With an entry velocity of multiple kilometers per second, having the vehicle carrying this payload not smashed into pieces at the end of flight is one of the key points of re-entry. Using...
master thesis 2017
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Papp, Z. (author)
Atmospheric entry is a process defined by extremes, from the great velocity at the point of entry to the high deceleration loads and aerodynamic heating in the lower layers of the atmosphere. In addition to the vehicle maintaining structural integrity, an equally important aspect of the re-entry mission is safety. This safety can only be...
master thesis 2014
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Van Doorn, S. (author)
A transition through the Earth's atmosphere is inevitable if it is desired to bring or return something useful from space. The transition is also known as the atmospheric entry, which is characterised by a highly energetic vehicle. Three types of entry can be distinguished: ballistic, glide and skip entry. In the hypersonic transition of a glide...
master thesis 2010
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Ording, B.E. (author)
Most re-entry vehicles utilize a Descent and Landing System (DLS) for a safe descent through the lowest part of the atmosphere. It usually requires deployment in a certain suitable range of flight conditions, which has to be estimated by limited means of navigation. The investigation performed is a comparison of currently used trigger methods...
master thesis 2010
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Schrijer, F.F.J. (author)
To further improve the design of hypersonic vehicles so that fully reusable systems become a reality, the detailed understanding of the ?ow ?eld that the vehicle generates is of paramount importance. The thesis deals with the aspects of experimental ?ow research which includes also the ?ow facility and the measurement techniques. First a...
doctoral thesis 2010
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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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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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