When we talk dieselpunk, ‘megalomania’ doesn’t sound like an obscenity or a diagnosis. The genre is inspired by the Interbellum aesthetics, and no one can argue that between two world wars size did matter, the bigger the better. In this gallery there are no abandoned projects and paper designs. Only real giants.
Let us begin with an undisputed dieselpunk icon, the airship. Not just a dirigible but a flying aircraft carrier:
The concept was already obsolete when this picture was published but carrier airships existed a few years before – see USS Macon and Akron.
Another nice try to increase the operating range of piston-engine aircraft: the Mayo project:
The Short Empire Class S.21 Maia was not the largest flying boat of the period – but large and powerful enough to carry a four-engine floatplane.