The article provides an overview of the design and operation of pulse jet engines, alongside a historical perspective on their development. It examines a selection of readily available fuels with diverse physicochemical properties, including methane, methanol, ethanol, gasoline, and LPG. A detailed chemical and energetic analysis of the combustion process for each fuel is conducted to determine key kinematic and thermodynamic parameters critical for the design and optimization of pulse jet engines. Computational methods and numerical tools used for simulating combustion chamber processes are discussed, with a focus on numerical analyses performed in the ANSYS environment. These simulations evaluate the impact of geometric parameters on the specific work of the engine, enabling the identification of optimal design solutions and key areas requiring further research and modifications. The study concludes by exploring potential design changes necessary for adapting pulse jet engines to operate efficiently with multiple fuel types. This includes considerations related to material selection for resistance to high temperatures and aggressive combustion conditions, as well as solutions for effective fuel distribution.