Searched for: subject%3A%22NASA%22
(1 - 13 of 13)
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Belz, Andrea (author), Graddy-Reed, Alexandra (author), Shweta, F. N.U. (author), Giga, A. (author), Murali, Shivesh Meenakshi (author)
Peer-reviewed publications and patents serve as important signatures of knowledge generation, and therefore the authors and their organizations can represent agents of intellectual transformation. Accurate tracking of these players enables scholars to follow knowledge evolution. However, while author name disambiguation has been discussed...
conference paper 2023
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Soliman, Philip (author)
This thesis contains the development of continuous Kepler orbit- and a discrete numerical integration-based collision detection algorithms in a system of LEO satellites, which in combination with collision algorithm form a simplified space debris evolution model. This model is then used to study the Kessler syndrome. The continuous and discrete...
bachelor thesis 2022
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Kumar, Shashi (author), Babu, Arun (author), Agrawal, Shefali (author), Asopa, U. (author), Shukla, S. (author), Maiti, Abhisek (author)
The Polarimetric Synthetic Aperture Radar (PolSAR) systems use electromagnetic radiations of different polarizations in the microwave frequency to collect the scattering information from targets on the Earth. Nevertheless, as with any other electronic device, the PolSAR systems are also not ideal and subjected to distortions. The most...
journal article 2022
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Duran, J.M. (author), Pirtle, Zachary (author)
When one wants to use citizen input to inform policy, what should the standards of informedness on the part of the citizens be? While there are moral reasons to allow every citizen to participate and have a voice on every issue, regardless of education and involvement, designers of participatory assessments have to make decisions about how to...
journal article 2020
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Mazouz, Rayan (author)
Autonomously landing a spacecraft on the surface of a planetary body with a degree of precision in the order of meters is highly challenging. Over the course of time, the landing ellipse, defined as the region with a 99% likelihood of where a space vehicle will land, has improved steadily but currently still has dimensions in the order of...
master thesis 2019
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Eberlein, David (author)
Guidelines dating back 50 years, NASA SP-8007, are employed today in the design of thin-walled launch vehicle structures. Due to advances in materials, structural designs, and manufacturing techniques since the publication of SP-8007, the development of new knockdown factors for contemporary launch vehicle structures is an ongoing subject of...
master thesis 2019
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Vermeulen, A.C.J. (author)
journal article 2019
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Hagenaars, Gerben (author), de Vries, S. (author), Luijendijk, Arjen (author), de Boer, W.P. (author), Reniers, A.J.H.M. (author)
Measured trends and variability in shoreline position are used by coastal managers, scientists and engineers to understand and monitor coastal systems. This paper presents a new and generic method for automated shoreline detection from the largely unexplored collection of publicly available satellite imagery. The position of the obtained...
journal article 2018
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De Koning, R.C.W. (author)
Nowadays Organic Rankine Cycle (ORC) power systems are of paramount importance to exploit waste heat and renewable energy sources. Standard design rules and empirical models are mostly available for steam/gas turbines and can not be directly applied for ORC. Because of this, a redefinition of the design strategy is needed, starting from the...
master thesis 2015
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Liang, K. (author), Zhang, Y. (author), Sun, Q. (author), Ruess, M. (author)
A knock-down factor is commonly used to take into account the obvious decline of the buckling load in a cylindrical shell caused by the inevitable imperfections. In 1968, NASA guideline SP-8007 gave knock-down factors which rely on a lower-bound curve taken from experimental data. Recent research has indicated that the NASA knock-down factors...
journal article 2015
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Van Dam, E.M. (author)
This thesis experimentally assesses the inflow towards the propulsors and the pressure distribution at the propulsor fan-face for the boundary layer ingesting D8 aircraft, and examines the dependence of the model, the propulsor and the flight condition on the inlet distortion. Use is made of mini-tuft flow visualization and five hole probe...
master thesis 2015
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de Winter, J.C.F. (author), Happee, R. (author), Martens, M.H. (author), Stanton, N.A. (author)
Adaptive cruise control (ACC), a driver assistance system that controls longitudinal motion, has been introduced in consumer cars in 1995. A next milestone is highly automated driving (HAD), a system that automates both longitudinal and lateral motion. We investigated the effects of ACC and HAD on drivers’ workload and situation awareness...
journal article 2014
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Van Rijk, E. (author)
With the rise of multi-core chips in commodity hardware, the need for specialized workloads to evaluate the performance of multi-core systems has become apparent. The current generation of workloads used for evaluating multi-core systems often consist of sequential programs not capable of running on multiple processors and are therefore of...
master thesis 2009
Searched for: subject%3A%22NASA%22
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