Vera Tech Phantom Sentinel

The Phantom Sentinel was an American unmanned aerial vehicle developed by VeraTech Aero. Utilising a "boomerang" design, the Phantom Sentinel was designed to be nearly invisible. Driven by electric-engine propellers, the rapid rotation of its entire body during flight meant that persistence of vision would render it translucent in the same way as fan blades.[1] First flying in 2006, the Phantom Sentinel was designed for hand launch and was equipped with a high-speed camera providing 360-degree video coverage.[2] It was electrically powered and designed to have an endurance of 40 minutes.[1]

References
  1. Thompson, Clive (December 10, 2006). "The Boomerang Drone". The New York Times.
  2. Rutherford, Mark (April 20, 1997). "Throw-and-go 'invisible' UAV". CNET. Retrieved 2013-08-10.
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