Whats the fastest object of "significant" mass (lets say more than 1 gram), that has been observed in our atmosphere, either man made or natural? Has anything "significant" ever breached triple digit mach in atmosphere?
Fastest in atmosphere object?
Bentley Peterson
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Landon Parker
Probably meteorites.
Aiden Smith
so something like 20 to 40 km/s?
John Rodriguez
Probably that manhole cover during that underground nuke test. Some of the more generous estimates put it at escape velocity.
Easton Diaz
Scratch that, the lower bound for the steel plate cap is 66 km/s based on the single frame it appeared in on the high speed camera.
Daniel Foster
assuming it wasn't ablated away on launch
Landon Perez
Speaking of nukes launching disks of metal real fast. Have these ever been tested or are they entirely theoretical? I've read estimates that they could accelerate a tungsten disk to over 2000 km/s
Austin Torres
In space, sure.
Not in atmo. They'll vaporize.
The limit in atmo is something like 40-50 km/s before it turns to plasma.
Ian Wood
So it would create a relativistic spear of plasma inside atmosphere? Would it leave a vacuum in its wake?
Kevin Carter
66 km/s is nowhere near relativistic