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Full-Text Articles in Engineering
Optimization Of A Low Reynold's Number 2-D Inflatable Airfoil Section, Todd A. Johansen
Optimization Of A Low Reynold's Number 2-D Inflatable Airfoil Section, Todd A. Johansen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A stand-alone genetic algorithm (GA) and an surrogate-based optimization (SBO) combined with a GA were compared for accuracy and performance. Comparisons took place using the Ackley Function and Rastrigin's Function, two functions with multiple local maxima and minima that could cause problems for more traditional optimization methods, such as a gradient-based method. The GA and SBO with GA were applied to the functions through a fortran interface and it was found that the SBO could use the same number of function evaluations as the GA and achieve at least 5 orders of magnitude greater accuracy through the use of surrogate …
Vertical Take-Off With Artificial Airflow, Rachel J. Adams
Vertical Take-Off With Artificial Airflow, Rachel J. Adams
Undergraduate Honors Capstone Projects
Vertical take-off has been a capability available only to military aircraft due to the design utilized. However, if the design incorporated artificial airflow over the aircraft wings, then vertical take-off becomes a possibility for aircraft varying from general aviation to small jets. In order to determine the most efficient wing for vertical take-off, multiple airfoils with different characteristics and airflow configurations were designed and tested. For each airfoil, the coefficient of lift was to be calculated and recorded in order to determine which airfoil had the greatest capability for vertical take-off. However, the airfoil/airflow design utilized in the tests did …