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199193 https://hdl.handle.net/2286/R.2.N.199193 http://rightsstatements.org/vocab/InC/1.0/ All Rights Reserved 2024 50 pages Masters Thesis Academic theses Text eng Wu, Eugene I Kim, Jeonglae Mignolet, Marc Takahashi, Timothy Arizona State University Partial requirement for: M.S., Arizona State University, 2024 Field of study: Aerospace Engineering With plans for commercial hypersonic flight becoming more prevalent, designers have greater needs for a tool that allows quick analysis of various potential designs and filters out unviable designs. Among these available tools, piston theory is a prominent tool for aircraft stability and flutter analysis. Classical piston theory's viability as a design tool was assessed by comparing its output on a flat plate delta wing with VORLAX, a vortex lattice solver, and ANSYS FLUENT. The outputs that all 3 methods were required to calculate were the coefficients of lift and moment, and their derivatives due to pitch rate. The analysis concluded that when applying the 2-dimensional flow assumption to classical piston theory, it had good steady-state accuracy whenever the angle of attack was less than five degrees. However, due to numerical method disagreement, unsteady flight prediction remained uncertain. For future work, confirmation of various assumptions is needed, and an expansion to include more geometries, flight conditions, and flight parameters would be beneficial. Aerospace Engineering Piston Theory Evaluation of Classical Piston Theory as an Aerodynamic Design Analysis Method