Re:RC fighter model UAV build in Jet engine 360+mph [video]
by jpitz on Sunday October 26, 2014 @02:00PM
(#8511700)
Handguns are far slower than rifles. .45 ACP usually goes about 1000 f/s.
That jet, flying at half the speed of a .45 caliber bullet, weighs at least one hundred times as much. I think that's the point GP was trying to make.
[ Parent
| on HN ]
Re:RC fighter model UAV build in Jet engine 360+mph [video]
by lotsofmangos on Sunday October 26, 2014 @02:20PM
(#8511766)
The kinetic energy goes up by the velocity squared but then any damage done by the impact would be a function of the impulse and the cross sectional area of the impact. I certainly wouldn't like to get hit by this, but it is probably less lethal than those rubber rounds they use in crowd control.
edit - Boxer Rocky Marciano's punch was measured at 1028 joules, which is supposedly a greater kinetic energy than an armour piercing bullet. Direct kinetic energy comparisons are not as useful as you might think.