Modern drones fly very well. This video looks at design principles that are much different from conventional designs.
It has been described as flying on a "cushion of air".
The inventor describes what the Coanda effect is and goes through the testing and development of an actual working model.
Very well presented from start to finish.
He describes why the initial design was inefficient. The first drone looks very well constructed but never stayed out of the ground effect for very long.
The second design flew much higher with greater control.
The last part of the video further explores aerodynamic principles.
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