How about a working Turbine Engine for a mechanical engineering project?
In this instructable we will learn how to make a really working gas turbine engine at home. There are many tries to make a homemade gas turbine, described over the net. There are even some instructables, e.g. that one:
https://www.instructables.com/id/Homemade-Tin-Can-Turbine-With-3d-printed-Compresso/?utm_source=newsletter&utm_medium=emailPosted in: #Mechanical