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New Air Blower Drone

New Air Blower Drone

Royal College of Art graduate Marcus Kung has designed a drone that can fly without propellers, with the aim of reducing injuries. The Impeller Drone — Kung’s graduate project as part of the RCA‘s masters program in Design Products — flies using four air blowers, instead of exposed rotor blades like most drones. He created the product in an effort to make drones safer for casual users and bystanders.

“Drones are popular but they’re dangerous,” says Kung. “The most common drone accident is people getting cut and hurt by the drones exposed rotor blades. A kid got his eyeball cut open by them.”

“So I started questioning whether there’s anything that in the future could replace rotor blades,” Kung continued. “I looked into different kinds of technologies and eventually I found this system, the blower impeller. I redesigned it, put it on the drone and started vertical takeoff tests.”

The impeller system sucks air in through the vents on the side of the drone and then accelerates it through a circular duct, creating an upward thrust as the air is pushed out through the bottom.

For now, the motor efficiency does not compare well with a standard drone, but Kung hopes that can be improved with more development.


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  1. The idea and the design is laudable and brilliant from the safety standpoint. However, impeller or even ‘squirrel-cage’ type blowers are far less efficient than rotor blades. The efficiency as well as the safety factor can be increased by enclosing the rotors in a ‘ducted fan’ configuration. This can be done with rotors as small as 1in in diameter all the way up to 6-8in rotors.

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