Plasma jet engines promise a future of fuel-free, electrically driven flight, but the technology faces a stubborn obstacle that no amount of enthusiasm can wish away. Ionizing air to generate thrust ...

Plasma jet engines, touted as a potential breakthrough in fuel-free, electric aviation, remain far from viable due to extreme power requirements that current technology cannot meet. Studies show ...

In the endless pursuit of faster, more efficient travel, engineers have been cooking up all kinds of new forms of propulsion. One of the most interesting to emerge in the last decade is the electric ...