Searched for: subject%3A%22Slipstream%22
(1 - 13 of 13)
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Cueto Corral, Pablo (author)
This study explores the flowfield around a pusher propeller-wing configuration using Lagrangian Particle Tracking (LPT). It assesses LPT’s capability to characterise propeller-wing interactions, emphasising its ability to resolve complex flow dynamics.<br/><br/>The experiment successfully achieves high particle concentrations downstream of the...
master thesis 2023
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Zinjarde, Pranav (author)
Due to the high aspect ratio and low induced drag of aircraft with strut-braced wings, they are being extensively studied due to their fuel-saving potential. This thesis aims to expand the fundamental knowledge in the design of aircraft with Strut Braced Wings (SBW) by achieving the following objectives. <br/><br/>The objectives of this thesis...
master thesis 2023
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Keesom, Thomas (author)
The potential for a correction by Rethorst for Vortex Lattice Methods (VLMs) exists to improve Longitudinal Static Stability predictions when applying the Rethorst correction to a slipstream engulfed horizontal stabilizer. The Rethorst correction has already proven to result in accurate lift predictions in VLMs for an isolated wing in a...
master thesis 2023
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van der Vlugt, Joost (author)
The angular momentum or swirl in the propeller slipstream is an energy loss. An effective method to recover the swirl and increase the propulsive efficiency is to use Swirl Recovery Vanes (SRVs). Former research showed an over-prediction in SRV thrust by a lifting line theory (LLT) model compared to wind tunnel experiments. The LLT model assumes...
master thesis 2023
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Ebbens, Elja (author)
The advent of distributed electric propulsion aircraft concepts requires novel physics-based analysis methods for the modeling of the complex aerodynamic interactions between the closely coupled rotor, wing, and flap. For this purpose, the analysis tool Open Rotor-Wing-Flap Interaction Solver (ORWFIS) is developed with existing and novel low...
master thesis 2022
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van Zelst, Pieter (author)
There is renewed interest into propeller-driven aircraft to improve fuel economy. Some novel concepts such as distributed electric propulsion (DEP) use propellers for lift augmentation. Low-order methods are required to quickly determine designs with improved high-lift performance. A 2D tool may be required to “tune” a 3D inviscid model such as...
master thesis 2021
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Orer, Ekin (author)
In the post processing of acquired wind tunnel force measurements, propeller-driven aircrafts need a preliminary correction of the propeller slipstream. Propeller slipstream effect has two major contributions to the flow field. The first one is the increase in dynamic pressure and the second is the addition of rotation in the flow field. Without...
master thesis 2020
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van den Ende, Luc (author)
An unexploited rotational momentum, i.e. swirl, is present in the slipstream of propellers. Stationary vanes, called swirl recovery vanes (SRVs), have been proven to be effective in increasing the propulsive efficiency of propellers. There is however no conclusive answer in literature on the noise effect of SRVs. Additionally, as the propeller...
master thesis 2018
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Liu, Xinyuan (author)
Increasing pressure of reducing fuel consumption has led to renewed interests in propeller propulsion devices for their high propulsive efficiency. In a propeller propulsion system, the torque applied to the propeller results in angular momentum in propeller slipstream. This angular momentum is not only a form of energy loss that does not...
master thesis 2018
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Schouten, Tom (author)
Designers are motivated to create more a efficient aircraft design following the growth of the market and environmental restrictions. As a result new interest in propeller-powered aircraft as such engines show higher theoretical propulsive efficiency as compared to turbofan engines. <br/><br/>The employment of turboprop engines on commercial...
master thesis 2018
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Van Wonderen, N.J. (author)
master thesis 2017
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Bouquet, T. (author)
As the aviation industry continues to strive for improvements in fuel efficiency throughout the entire aircraft design, interest has been renewed in propeller engines. New research into advanced turboprop engines, so-called open rotor engines, seems promising as they combine the inherent high propulsive efficiency of ordinary turboprop engines,...
master thesis 2016
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Stokkermans, T.C.A. (author)
In light of the energy crisis of the early 1970's, NASA and industry gained a renewed interest in high-speed propellers for improved propulsive efficiency and explored the idea of swirl recovery vanes (SRV) to generate a net thrust from the residual swirl in the propeller slipstream. After this first effort on the aerial application of SRV, only...
master thesis 2015
Searched for: subject%3A%22Slipstream%22
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