06/02/2024
Interesting court case today.
Very rough calculations, and many variables to consider, but a 6kg Unmanned Aircraft falling from 120m agl has a potential impact energy of approximately 1900J.
Research shows an impact of 80J to a human skull could result in an Abbreviated Injury Scale (AIS) 3 serious injury. The skull is the most vulnerable human body part when considering falling objects from above.
If we assume only a small fraction of that 1900J impact energy was transferred on contact with a person's skull, say a glancing blow, you can still imagine the transferred energy would be well in excess of 80J, and so very likely to cause a serious injury or much worse!!!
You can't beat physics. Fly your drones well away from uninvolved persons unless risk is correctly mitigated and you are correctly approved.
Operating on the basis 'sure nothing happened the last time' is actually defined as operating out of control and relying on luck to ensure nothing happens.
The incident happened at the Galway Shopping Centre on the Headford Road in October 2022.