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Crank mechanism of a four-cylinder in-line gasoline aircraft engine
Doležal, Jakub ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis is focused on design of a steel connecting rod for the aircraft engine Walter Mikron III C produced by Parma-technik s.r.o., which could be an alternative to the existing aluminium alloy connecting rod. Research of aircraft engines and connecting rods is done before the design work itself, together with explanation of the calculation of dynamic stresses in the crank mechanism. In practical part, design of the crank mechanism is analysed, followed by the calculation of its dynamic stresses, analytically and by 1D simulation in the GT-Suite Cranktrain software. Connecting rod strength analysis is performed by analytical calculation, which is verified by FEM analysis in Ansys Mechanical software, both approaches evaluating connecting rod tension and fatigue safety. Similarly, the steel connecting rod is designed and evaluated in two designs, with an I and H shank. Drawing documentation of both designs of the connecting rod is output of this thesis.
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