We tend to forget that jet engines were not an everyday occurrence. This technology is more than 80 years old. Yet it caused a revolution in aviation. With modern tools, it is easy/possible to make one in the comfort of your own home but if things still prove to be too difficult. You can purchase mini jet engines and mini pulse jet engines online. They are used in remote-controlled model aircraft.

This video is a good example of how the pulse jet engine works and why. At its simplest design, there are no moving parts. The shape of the combustion chamber and the rest of the engine is all that is required.

30 Sep 2023 - JET ENGINE with NO MOVING PARTS - Integza

A scaled-down pulse jet engine on a model aircraft might give you an idea of the performance.