Air-Elf Aircraft Concept Is Able to Take-off or Land Vertically Air-Elf aircraft concept is to solve road congestion. The core of the concept is a new type of wing, “Air Caterpillar”. It can be ...
I would like to know if there is some formula / graph which would provide / show the efficiency of a certain type of propeller in space. Specifically, I'm interested in the acceleration attainable at ...
This question led me to wonder whether swimming would be the same experience for a fish in a full, sealed ball as it is normally. If the fish is about 7cm from the walls of the tank, a pressure wave ...