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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 491 to 500 of 2094 (0.013 seconds)| 491 |
An Optimization Study of Small-Scale Propeller BladeNabid, Fahad M 01 January 2023 (has links) (PDF)
This research paper aims to investigate the optimization of smaller propeller blades to achieve maximum efficiency by studying the effect of the twist angle on reducing drag, increasing thrust, and preventing rapid wear on the blade. Inefficient propellers consume a significant amount of energy, particularly during low-speed flights. The low Reynolds number regime challenges aviation engineers to design propellers with the highest possible efficiency to minimize energy losses. The primary objective of this thesis is to optimize smaller propeller blade shapes to enable them to produce maximum efficiency. The advanced ratio of a propeller blade heavily influences the blade's performance efficiency. The analysis uses the modified Blade Element Momentum Theory (BEM) and the Betz optimization method, with an analytical approach for comparing methods. The results show that the aerodynamic twist angle plays a vital role in propeller blade performance in a low Reynolds number regime. An optimized twist angle can improve efficiency up to eight times, as per the preliminary data, highlighting the critical role of optimization in achieving maximum efficiency in propeller blades.
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| 492 |
Axisymmetric turbulent jets and wakes that are self-preservingVogel, William Martin January 1974 (has links)
No description available.
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| 493 |
Supersonic interference pressure drag between wing and body at zero lift /Peline, Julius P. January 1958 (has links)
No description available.
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| 494 |
The effect of aerodynamic torques on the angular motion of an artificial satellite /Schrello, Dominick Michael January 1960 (has links)
No description available.
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| 495 |
On the stability of the supersonic boundary layer /Elsharnoby, Mohamed A. January 1987 (has links)
No description available.
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| 496 |
Similitude considerations in advanced aerothermodynamic facilities /Thomas, Richard Eugene January 1964 (has links)
No description available.
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| 497 |
An extension of Prandtl's mixing length theory and application to internal and external flows /Williamson, John Wesley January 1965 (has links)
No description available.
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| 498 |
Investigation of the pressure distribution on a blunt-fin blunt-plate combination at a Mach number of 11.26 /Thomas, John Powers January 1966 (has links)
No description available.
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| 499 |
An investigation of aerodynamic controls at hypersonic Mach numbers /Fiore, Anthony William January 1967 (has links)
No description available.
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| 500 |
Investigation of electric arc interaction with aerodynamic and magnetic fields /Roman, Ward C. January 1966 (has links)
No description available.
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