Electrohydrodynamic propeller for in-atmosphere propulsion; rotational device first flight

Abstract

A new rotary ionic engine with possible applications to in-atmosphere propulsion was produced. We designed EHD propeller-counter-electrode systems in which the propeller spins and flies. Much more EHD thrust can be generated in negative polarity before breakdown. The propeller can fly either lifting off a high voltage shaft or sliding up. It appears that the EHD propellers are the first rotational ionic devices to fly. System performance was tested at and below atmospheric pressure in air, nitrogen, carbon dioxide, argon, krypton, and helium. More thrust than in air is apparent in carbon dioxide and significantly more in sulfur hexafluoride.