Undefined Technologies, a Florida-based startup, announced that its eVTOL ion propulsion drone, Silent Ventus, has successfully completed a critical test flight hitting its projected flight time and lifting power, marking this a major milestone for the emerging dual-use cargo delivery drone. During the 4-1/2 minute flight, the aircraft demonstrated its flight performance beyond reaching steady-state conditions – with higher efficiency power delivery systems and noise levels below 75 dB.
