6 ms·
It's very unlikely to kill someone, or even seriously injure them. You should be at least as worried about playing baseball or riding a bicycle around people.
by baddox 12y ago
It's very unlikely to kill someone, or even seriously injure them. You should be at least as worried about playing baseball or riding a bicycle around people.
- dharma1 12y agodepends where you fly. A 2-5+ kg drone, even if the props aren't spinning is gonna do serious damage if it drops from the sky and hits someone on the head. With spinning CF props you can easily slice someone up pretty bad
- TrevorJ 12y agoThe battery packs on those things have quite a bit of heft to them, hit anything at terminal velocity and it's gonna be pretty devastating.
- Tloewald 12y agoTerminal velocity for these things will not be terribly high.
- DannyBee 12y agoSo, they go 25mph normally, i wonder if the terminal velocity is more or less than that. Too lazy to do the calculations :P
- TrevorJ 12y agoWay more. Probably on the order of around 120 mph
- TrevorJ 12y agoProbably on the order of 120 MPH or 55.8 meters per second. The drone weighs 1.2 Kilograms. The kinetic energy on impact would be 1800 Joules give or take. A 357 Magnum generates about 873 Joules. The energy we are talking about is not insignificant. I'm actually in favor of allowing people to fly drones with as little restriction as possible but let's not pretend there aren't some risks.
- Tloewald 12y agoHow do you figure 120mph? It's ~1kg and I would guess has a higher surface area relative to mass than a person whose terminal velocity is about 120mph. In any event, it takes a person 8s to get close to terminal velocity — that's a drop of 300m or so. The energy involved is certainly non trivial but energy is not the whole story. The densest, heaviest pieces will be the battery and motors.