4 ms·
/some/ power saws can stop instantly - if you try and touch this one with a finger it will stop before it can do damage: https://www.youtube.com/watch?v=eiYoBbE
by ljf 8y ago
/some/ power saws can stop instantly - if you try and touch this one with a finger it will stop before it can do damage: https://www.youtube.com/watch?v=eiYoBbEZwlk https://www.youtube.com/watch?v=eiYoBbEZwlk
- Balero 8y agoThe method these use, retracting the blade, and jamming it into a block of metal to stop the momentum would not work on a aircraft. This method (whilst pretty amazing) does not work outside of a static machine. You would need a couple of tons of metal attached to each rotor, and thats before getting into what would happen when you actually try and stop the rotor.
- jacobush 8y agoI am sure it could be made to work. Some kind of shroud designed to crumble in the right way, maybe start rotating itself partly. Not tons of metal. But of course, it would make the airframe a heavier and you'd pay a cost for all flights.
- falcolas 8y agoAt a cost. There are several consumable components involved that have to be replaced every time it goes off. And it's less that the saw is stopped instantly which prevents the damage, but that it's explosively retracted away from the finger and then stopped. And, as lamented by many wood workers, damp wood can set it off as well. Of course, that's a small price to pay in some cases.