Undefined's next-gen silent ion propulsion drone: still noisy

Undefined Technologies, Next-Generation Silent Drone

eVTOL Ion Propulsion Drone Completes Test Flight

Latest Drones News - Page 2

How to make my drone stealthy and silent - Quora

Oscar L. Martin on LinkedIn: Undefined claims 4.5-min flight for its silent ion-propulsion drone

Hyundai is actually building those wild unstoppable 4x4s on robot

Next Generation Silent Drone Achieves Major Milestone

Ion powered drones could be the future

News/Media Archive - Skender

Will the physics add up for near-silent, ion-propelled cargo drones?

Undefined Technologies, Next-Generation Silent Drone

eVTOL Ion Propulsion Drone Completes Test Flight