![Undefined Technologies Shares New Footage of Its Silent Drone That Generates Only 70 DB - autoevolution Undefined Technologies Shares New Footage of Its Silent Drone That Generates Only 70 DB - autoevolution](https://s1.cdn.autoevolution.com/images/news/gallery/undefined-technologies-shares-new-footage-of-its-silent-drone-that-generates-only-70-db_2.jpg)
Undefined Technologies Shares New Footage of Its Silent Drone That Generates Only 70 DB - autoevolution
![Inflatable Venus drone, Mars spacesuits and more: NASA picks far-out tech concepts for future study | Space Inflatable Venus drone, Mars spacesuits and more: NASA picks far-out tech concepts for future study | Space](https://cdn.mos.cms.futurecdn.net/F86CBkeiNqebmapyBAJZGe.png)
Inflatable Venus drone, Mars spacesuits and more: NASA picks far-out tech concepts for future study | Space
![Undefined Technologies' eVTOL Ion Propulsion Drone "Silent Ventus" proves its commercial viability - YouTube Undefined Technologies' eVTOL Ion Propulsion Drone "Silent Ventus" proves its commercial viability - YouTube](https://i.ytimg.com/vi/kbOBv3InOGo/maxresdefault.jpg)
Undefined Technologies' eVTOL Ion Propulsion Drone "Silent Ventus" proves its commercial viability - YouTube
![Silent Ventus è il drone americano a propulsione ionica. Non ha eliche e punta ad essere silenziosissimo | DDay.it Silent Ventus è il drone americano a propulsione ionica. Non ha eliche e punta ad essere silenziosissimo | DDay.it](https://dday.imgix.net/system/uploads/picture/image/85616/3c13fa_Drone_1.jpg?w=1080&s=ddd548123b8ba6192f4cd67071214421)