R Ditto wrote:The CODF is deadly, plain and simple.
Mach roughly comes to 300m/s.
If the CODF is in LEO (Low Earth Orbit), we are talking high speed death death at 200+km high.
Take the Boom Gun...
200 'slugs', each roughly 8 grams in weight, and about 5x25mm in size, going at a speed of 1500m/s, doing 3D6x10 MD.
Now, take LEO, the speed for stable LEO is 8km/s (8000m/s), or over 5 times faster.
Lets bring in the math.
Kinetic Energy = 1/2 (Mass x Velocity^2)
So, a single GB slug would do 15-90 SDC by itself, at a speed of 1500m/s.
We get a KE of 9,000,000
(how ironic, that comes out to a max SDC of 1 per 900,000 KE... maybe rounded to 1 mil for good measure)
Now lets that 8 gran slug was going 8,000m/s
It comes out to a KE of 256,000,000, or 28 times more KE. That's a good boost to 4D6+1 MD.
But weight, there's more!
The ship trying to get into space has to be going at least 1500m/s itself!
We then get a total effective KE of 361,000,000! Or 40 times more KE than at 1500m/s alone! That's a good 6D6 MD from a little 8 gram chunk of material!
Just for comparison, that's about as much KE as if you got hit by a 1 ton car going 96kph (60mph)...
Oh, what if something gets hit by a single 1 kg chunk of rock?
Basic KE of 32,000,000,000 (and effective 5D6x10 MD?), or if hitting something heading up at 1500m/s, an effective KE of 45,125,000,000 (an effective 1D4x100+50 MD?)
It's also almost as much KE as a a 150 ton train plowing into something at 96kph (60mph)
Name ANY single rocket or aircraft that can stay pointed up after being hit with that kind of force...
Toss in possibly being impacted by several KG worth of mass on the way through the CODF... not to mention what it's going to do to stealth coatings on craft, assuming the material doesn't contain trace elements that cause them to flash or spark when subjected to extreme impact force, and the effective heat energy generated by the forces...
As for the materials...
Asteroid mining...
Lets say the orbitals tend to take rock leftover from processed ore and used it for the CODF, that means they have a byproduct from one thing that gets reused in another thing.
Oh, at those speeds, materials don't matter, the impact will be so fast the impact force will likely be delivered faster than the rock has a chance to shatter. You get water going fast enough and it will punch through even solid steel. Certain materials can only deform/shatter so fast, meaning if they are going fast enoug, they could very well have already passed through whatever they hit before they even have a chance to deform in the impacted item.
At 8000m/s, a little debris could cover a lot of area, it could be "spread out" thin and still have lethal effects on anything that passed througgh it...
Oh, anyone seen the movie Pitch Black with Vin Desiel?
IIRC, in the opening, micro meteorites punch clean through the ship's hull like a hot knife through butter... Considering how intact part of the ship was after it crashed, it was made of some pretty tough stuff, and yet the micrometeorites punched through it so easily...
those are the kind of forces we are talking about...
Nice math..and I've never disputed the lethality of the CODF...just that it CAN be circumvented / defended against using non-standard means (I.E. ;magic) but yeah..anyone not using a specialy shielded vessel or just ignoring the whole mess and teleporting past it, would be so much hpyervelocity chaff once they hit the ring/field.