Searched for: contributor%3A%22Snellen%2C+M.+%28mentor%29%22
(1 - 20 of 22)

Pages

document
Radius, Julia (author)
Noise quantification methods for helicopters are limited, this especially holds for military helicopters. This research assesses the suitability of an existing civil helicopter noise model for the military helicopters of the RNLAF. In order to achieve this noise modeling platform HELENA, which uses hemispheres created for the Apache in a...
master thesis 2022
document
Radius, Julia (author)
master thesis 2022
document
van der Grift, Rebekka (author)
Aircraft noise and its impact is one of the biggest challenges the aviation industry faces today. At airports, the number of operations and the flight routes are driven by the noise impact on the surrounding communities. To predict the expected aircraft noise levels around airports, noise models are used. The accuracy of these models is thus of...
master thesis 2022
document
Schoorl, Daan (author)
The past years there has been a significant increase in the popularity and commercial availability of consumer drones.
master thesis 2021
document
van Ieperen, Mikal (author)
master thesis 2021
document
Smit, Hein-Dirk (author)
In recent years, there has been a rise of electric propeller aircraft in the field of general aviation. These propeller aircraft greatly reduce the emissions and engine noise compared to conventional aircraft, but noise coming from the propeller stays unchanged. Acoustic imaging, using beamforming, could help in the characterization of...
master thesis 2021
document
Pinho Ferreira, João (author)
For a hub airport, capturing transfer passengers and offering better connections are key elements that largely influence its future growth and profitability. This research aims to develop a strategic stand planning model capable of selecting profitable turnarounds that will expand the network of a hub, integrating those turnarounds into the pre...
master thesis 2021
document
Blanke, Mathieu (author)
As poor air quality poses a risk to human health, this study aims to estimate the impact of Schiphol airport on local concentrations of various air pollutants from January 2014 to August 2020. The pollutants of interest are nitrogen monoxide, nitrogen dioxide, ozone and particulate matter. Three separate methods were applied: a comparison of air...
master thesis 2021
document
Heilig, M.A. (author)
As the number of aircraft movements increases around Schiphol, and other airports alike, questions are being raised about the environmental impact of the aircraft movements. One of the questions about the environmental impact of aircraft operations is the validity of aircraft noise prediction models. This research focuses on the validation of...
master thesis 2020
document
Koster, Robert (author)
The amount of air traffic worldwide is increasing, with an adverse effect on aircraft noise in the vicinity of airports as a result. Measurements and calculations have complementary benefits and limitations for the assessment of aircraft noise. A common method for the calculation of aircraft noise is ECAC Doc. 29. Various improvements of this...
master thesis 2020
document
Haddaoui, Mohammed (author)
Turboprop engines are known for their high fuel efficiency on short-range missions compared to turbofan engines. A disadvantage of turboprop engines is the noise they produce. The dominant noise source of the turboprop engine is the propeller. The goal of this research is to develop a propeller source noise model which has the future goal to...
master thesis 2019
document
Mehmood, Umair (author)
A first step in designing aircraft with optimal sound is the development of a module that is able to assess noise in a sophisticated way, which is the exact goal of this research. In this research the Audio Assessment Module (AAM) is completed with the addition of tonality, roughness and fluctuation strength. The AAM is now able to assess sound...
master thesis 2018
document
Nijhof, Daniëlle (author)
These are exciting times to work in the field of acoustics: researchers have a more granular understanding of sound than ever before due to the ability to acquire, store and analyze unprecedented amounts of acoustical data. The purpose of acoustic imaging is noise reduction. If noise can be measured, it can be reduced. Acoustic imaging is...
master thesis 2018
document
Doljé, Stefanie (author)
The sound of fly-over aircraft is measured with the use of an acoustic camera to gain more information on aircraft noise. This camera can be optimised to gain data of a higher quality. Within the ANCE section this optimisation was required mainly to diminish the influence of the ground effect in the data and to increase the resolution of the...
master thesis 2017
document
Luesutthiviboon, Salil (author)
This work aims to determine the optimal microphone placement on an acoustic array of TU Delft’s ‘V-tunnel’ which is used for beamforming in aero-acoustic studies. The beamforming performance is driven by two parameters; the Maximum Side lobe Level (MSL) and the Main Lobe Width (MLW). The array design should give a good trade-off between these...
master thesis 2017
document
Haasdijk, S.M. (author)
Noise prediction models are critical to assess the noise production of aircraft. They are of growing importance due to the increase in air transport and population. This research focusses on the comparison of the noise predictions of empirical and semi-empirical models. The noise predictions of NIROS, an empirical noise prediction model used by...
master thesis 2016
document
Vander Eyken, S. (author)
As the air travel industry steadily grows, so does the noise pollution that comes with it. This brings with it a myriad of socio-economic consequences, especially in the vicinity of airports. In order to combat this aircraft noise at its origin, it is important to know where it originates from and determine the prevalent sound sources on an...
master thesis 2016
document
Dewitte, F.H.V. (author)
The amount of air traffic is increasing and cities become more and more populated. Since airports tend to be located close to or inside cities, an increasing amount of people suffer from aircraft noise pollution. More silent aircraft are needed to be able to reduce this noise pollution. One way to do this is through blocking the engine noise...
master thesis 2016
document
De Blok, S. (author)
Airports in The Netherlands are subjected to tangent environmental laws to restrain pollution and noise nuisance. Amsterdam Airport Schiphol (AAS) is one airport dealing with this regulatory framework but nevertheless they are resolute to continue growth with respect to aircraft movements. To cope with the law related to aircraft noise, the...
master thesis 2015
document
Saleh, M. (author)
Sub bottom profilers are commonly used as mapping tool for the seafloor and sub-bottom structure in the upper few meters of the seafloor. Their recent enhanced performance in terms of resolution adds the potential to classify the sediment layers as well. In this research, the seabed surface and sub layers classification are investigated using...
master thesis 2011
Searched for: contributor%3A%22Snellen%2C+M.+%28mentor%29%22
(1 - 20 of 22)

Pages