Florida's Undefined Technologies claims it has managed to increase the thrust levels of ion propulsion systems to "unprecedented levels" with its "Air Tantrum" technology, enabling very quiet drones ...

If there’s one hard-to-ignore annoyance with drones is noise pollution, with these otherwise extremely useful aircraft being quite loud due to their propellers. This Florida-based startup plans to ...

Undefined Technologies has unveiled the new design of its concept eVTOL drone named the Silent Ventus. The drone is powered by proprietary ion propulsion technology, creating "high levels of ion ...

According to Undefined Technologies, which just debuted a new outdoor flight test video, Florida's "silent" flying dish-rack, propelled by ionic propulsion, is scheduled to go into general production ...

Last week, Undefined Technologies (UT) a startup drone company based in Miami, Florida, successfully completed a test flight, powered by ion propulsion, that demonstrated significant increases in ...