Posts by Eth
Let's assume that some wealthy characters somehow find the plans for a valveless pulsejet. How is not important. Maybe there was a time travel incident, or some Atlantean book was unearthed, or som...
In a post-post-apocalyptic world with adequately schizophrenic tech, a tinkerer decides to build a submarine engine around a lump of radium, or some other reliable source of heat. But instead of us...
Answers to this question note that human (and by extension mammal) wings would use naked skin instead of feathers, as we see on bats. However, with feathers, birds can have wings with shaped more l...
The wizards of Magitechia have discovered that the deflagration or detonation of certain chemical compounds have beneficial supernatural effects, that are useful for powering magical apparatuses. A...
A big problem with Steampunk airships is how to propel them. Steam engines tend to be too heavy to be useful. And sails cannot be used, because unlike sea-going ships, airships are in contact with ...
What would it take to build helicopter blades that can fold in several parts? This is the continuation of a question on Aviation. Unfortunately, there have been no use case for this for existing h...
Bernal spheres and other O'Neill cylinders are complicated, maintenance-high and fragile beasts. Someone started to make micro-black-holes and put them in asteroids, in order to have 1 to 10+km roc...
