Ubiquitous in the field of electric propulsion, thermionic hollow cathodes are electron sources which utilize thermionic emission from a low work function insert material to achieve large extracted ...

The most common of these, field emission electric propulsion (FEEP), utilize liquid metals as its ion source to produce positively charged ions and/or droplets and have previously been studied here at ...

Hydrogen propulsion is expected to evolve through three distinct innovation waves: Early Adoption: Safe yet less efficient ...

Britten-Norman Islanders to be converted to zero-emissions hydrogen electric propulsion systems by a German company that is focused on carbon neutral regional aviation. According to AOL air ...