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‘Phantom Twist’: US team designs drone that spins to achieve near-invisibility
(news.northwestern.edu)
This is a most excellent place for technology news and articles.
Yes they did provide the spec, algos, models etc but I was specifically referring to the design:
I didn’t mean it as a slur, just a quick descriptor. I don’t think there have been any considerations towards practical use (eg. vision, directionality, control, sound), which is why I called it a toy.