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Recent content by RandomTask

  1. R

    FAA Category 2 and 3 Explored... What is 11ft/lbs of kinetic energy???

    Agreed. To be honest/fair, I mis-read -- I was talking about the _mini_ being difficult (not impossible) to cause big bloody wounds, not the _mavic_.
  2. R

    UAS Kinetic Energy Impact Ballistics Table

    I completely edited out part of my response, following the "body armor" reference. Was going to point out that In addition to the Mike Tyson punch reference...I was going to link a youtube video - I've not been around here long enough to know if it's OK to post a link like this but a guy is out...
  3. R

    UAS Kinetic Energy Impact Ballistics Table

    Oh, sure, plenty of people will hit the deck after being hit. Most of them will not be due to the force of the hit, per se, but by their anticipation and/or reaction to it. As in if I see it coming I'm going to be reflexively diving away and coming off my feet whether it hits me or not. If I'm...
  4. R

    UAS Kinetic Energy Impact Ballistics Table

    I'm not buying that "60 ftlbs knocks a grown man clean off his feet". I've seen videos of people being shot quite a number of times (8-15) with 9mm handgun rounds (350-400 foot pounds per bullet) and they're not knocked off their feet. They keep attacking. A (relatively slow) fastball (95mph)...
  5. R

    FAA Category 2 and 3 Explored... What is 11ft/lbs of kinetic energy???

    Replying to myself here because I just did a renewal on my 107..and noted something interesting. In _several_ spots, there were references to Category restrictions for OOP. In _none_ of the questions did it mention the "rotating parts / lacerations" bit for Cat1. Only on 2/3. Something...
  6. R

    UAS Kinetic Energy Impact Ballistics Table

    As I posted in another necro thread...your chart is great except for one major detail. The FAA documentation doesn't specify max kinetic energy of the drone, it specifies that impact must not cause injury "equal to or greater" than that caused by the *transfer* of 11 foot pounds from a *rigid...
  7. R

    FAA Category 2 and 3 Explored... What is 11ft/lbs of kinetic energy???

    I'm late to the party here, but a couple of points worth mentioning... Please note the FAA's wording, to wit: "Will not cause injury to a human being that is equivalent to or greater than the severity of injury caused by a transfer of 11 foot-pounds of kinetic energy upon impact from a rigid...