VeraTech, a USA based firm has claimed to develop invisible drone named Phantom Sentinel. The company has applied for the patent of this technology.

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Here a peep into the theory of its working.
Persistence of vision” turns a fast moving object into a blur. Remember how the rotors of a helicopter are blurred and not easy to see. The whole body of the aircraft spins and turns into a blur thus by avoiding visual identification, but cannot evade radars.

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The so called Phantom Sentinel aircraft is Y-shaped and consists of a single long wing attached to two short aerodynamic extensions. The weight is carefully balanced around the center of mass. When the rotors are moving the solid part moves around this center of mass thus creating a blur.

Making the plane sky blue, or largely transparent, should help conceal it further. The camera can be placed near the centre of mass and used to build a panoramic picture of the ground below, after software processing.

The compact size and light weight make it easy to fold, field pack, and hand launch.

It gives near invisible surveillance for close in intelligence and has several launching options like throw and go, Canister launch and Remote launch.

Via: Newscientisttech