Browsing by Author "Santos, Miguel Cabeleira dos"
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- Analytical Model for the Performance Curves of a Family of Propellers based on Wind Tunnel TestsPublication . Santos, Miguel Cabeleira dos; Gamboa, Pedro VieiraThe main objective of the work done in this dissertation is the construction and validation of an analytical model for the performance curves of a family of propellers tested at low Reynolds numbers. This kind of propellers is more commonly used in Unmanned Aerial Vehicles (UAVs). The model was designed in MATLAB® using a variety of regression techniques, such as the Least Squares Method (LSQ), via experimental data acquired at University of Illinois at Urbana-Champaign (UIUC), of measurements of seventeen APC Thin Electric propellers. The experimental data went through a reduction process for easier analysis. In order to further develop this model, tests were run at the Department of Aerospace Sciences (DCA) of University of Beira Interior (UBI) for ten more APC Thin Electric propellers. The analytical model will predict power coefficient and propeller efficiency accurately for the propellers with dimensions close to those that were used for its development. This model will be useful to achieve optimal design, providing a faster and more efficient propeller selection phase. The propeller performance obtained during the experimental tests will also be catalogued to further increase the documentation on propellers tested at LRN.