Radical VTOL drone’s wings are also its rotor blades

Ordinarily, VTOLs have both fixed wings and copter-style horizontal propellers. Those props allow them to take off and land vertically, so they don’t require a runway. Once they reach their cruising altitude, the propellers either tilt forward or a vertical rear pusher prop kicks in, taking the drone into faster, more energy-efficient forward flight than would be possible for a conventional multicopter.

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