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tetsuoh
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 Posted: Wed Jul 08, 2015 6:21 pm Post subject: Effects of a Super Star Destroyer Crashing into a planet? |
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As the title states, just how bad would this be?
Are they big enough to cause an extinction event?
What other effects should be considered? |
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garhkal
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| Posted: Wed Jul 08, 2015 10:11 pm Post subject: |
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Check out This thread from the SWRPGnetwork Holonet..
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Last edited by garhkal on Thu Jul 09, 2015 6:08 pm; edited 1 time in total |
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cheshire
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| Posted: Wed Jul 08, 2015 10:23 pm Post subject: |
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You know that crashed Star Destroyer in the Episode 7 trailer?
THAT WAS ON ENDOR!
j/k
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D+1
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| Posted: Thu Jul 09, 2015 1:28 pm Post subject: Re: Effects of a Super Star Destroyer Crashing into a planet |
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| tetsuoh wrote: | As the title states, just how bad would this be?
Are they big enough to cause an extinction event?
What other effects should be considered? |
IMO it wouldn't be that bad at all, barring a reactor going super-critical. I think, at the very worst, it would be several hundred megations worth of nuclear bomb. Wipe out the largest major metropolitan areas, say, the greater Los Angeles area or New York/5 boroughs. Call it about 50-100 miles diameter effectively nuked. That's worst case. Best case is nothing more than what you see in the Episode 7 trailer - a big pile of wreckage that would probably toss up a really big cloud of dust and dirt on impact but not much more.
ELE? Not a chance. It ain't THAT big and in particular it's highly unlikely to be moving that fast. See also the impact with the surface of the DS2 in RotJ. Impact with a planet surface would involve blazing through the atmosphere first and then doing pretty much what you see there - just a big explosion of proportional size, but not extinction level. In an atmosphere and with vegetation and flammable structures it would be quite devastating but still very localized IMO. |
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cheshire
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| Posted: Thu Jul 09, 2015 4:16 pm Post subject: |
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http://janus.astro.umd.edu/astro/impact/
I'd run the tests with an iron asteroid. Lots of fun there. Looks like you don't want to be standing under it when it crashes.
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garhkal
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| Posted: Thu Jul 09, 2015 6:10 pm Post subject: Re: Effects of a Super Star Destroyer Crashing into a planet |
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| D+1 wrote: | | tetsuoh wrote: | As the title states, just how bad would this be?
Are they big enough to cause an extinction event?
What other effects should be considered? |
IMO it wouldn't be that bad at all, barring a reactor going super-critical. I think, at the very worst, it would be several hundred megations worth of nuclear bomb. Wipe out the largest major metropolitan areas, say, the greater Los Angeles area or New York/5 boroughs. Call it about 50-100 miles diameter effectively nuked. That's worst case. Best case is nothing more than what you see in the Episode 7 trailer - a big pile of wreckage that would probably toss up a really big cloud of dust and dirt on impact but not much more.
ELE? Not a chance. It ain't THAT big and in particular it's highly unlikely to be moving that fast. See also the impact with the surface of the DS2 in RotJ. Impact with a planet surface would involve blazing through the atmosphere first and then doing pretty much what you see there - just a big explosion of proportional size, but not extinction level. In an atmosphere and with vegetation and flammable structures it would be quite devastating but still very localized IMO. |
IMO the blazing through the atmosphere itself would be a massive issue (mass sonic boom) and the impact not only would have a mass devastation from the explosion, but the shear size would imo also cause earth quakes. If it hits in the ocean a massive tsunami would be created.. So while i agree it may NOT get to the ELI level, it would be a lot more devastating than just a few thousand megatons of explosion power..
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cheshire
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| Posted: Thu Jul 09, 2015 7:21 pm Post subject: |
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Is vaporized durasteel safe to breathe?
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tetsuoh
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| Posted: Thu Jul 09, 2015 8:37 pm Post subject: |
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Not unless your race has a story factor or special ability allowing you to breath vaporized metal and/caustic fumes.
On the scale of how fast a super can move - at less than cruising speed and making its diameter only 1/4 the size of the actual scale - it was enough to cause and ice age - mass extinctions and massive tidal waves by striking water - not land.
on land it would estimate an 11.3 set of quakes - a crater 212km in diameter - 42km bigger than the largest recorded on earth - oh and the the largest quake recorded was 9.5 and felt world wide. This would trigger eruptions in over 1/4 the world - and the cause a new ice age and mass extinctions as well.
all this - if the destroyer was traveling only 72kmh and had a density of only 1/4 its size in iron - durasteel would probably be denser than standard iron - if not it is still far less malleable |
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cynanbloodbane
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| Posted: Thu Jul 09, 2015 9:00 pm Post subject: |
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Kuat instituted crumple zones after Endor, so it will now be perfectly safe.
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tetsuoh
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| Posted: Thu Jul 09, 2015 9:23 pm Post subject: |
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LOL ...... man I am so now thinking of finding out the actual terminal velocity of a SSD now... I would think at 17KM
How much of the inside of the destroyer would you guys equate as open space?
(mind you we could say a portion of the insides all filled with whatever could be added as part of the space to a much lesser degree, but that is probably getting needlessly complicated.) |
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garhkal
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| Posted: Fri Jul 10, 2015 12:33 am Post subject: |
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| tetsuoh wrote: |
On the scale of how fast a super can move - at less than cruising speed and making its diameter only 1/4 the size of the actual scale - it was enough to cause and ice age - mass extinctions and massive tidal waves by striking water - not land.
on land it would estimate an 11.3 set of quakes - a crater 212km in diameter - 42km bigger than the largest recorded on earth - oh and the the largest quake recorded was 9.5 and felt world wide. This would trigger eruptions in over 1/4 the world - and the cause a new ice age and mass extinctions as well.
all this - if the destroyer was traveling only 72kmh and had a density of only 1/4 its size in iron - durasteel would probably be denser than standard iron - if not it is still far less malleable |
Where you getting those figures from as to how big the craters would be/tectonic event created??
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tetsuoh
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| Posted: Fri Jul 10, 2015 1:00 am Post subject: |
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| the calculator that cheshire posted and wikipedia concerning the yucatan penisula crater - tsunamis - and krakatoa. |
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garhkal
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| Posted: Sat Jul 11, 2015 12:49 am Post subject: |
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Ah..
So what would the damage be from a base level ISD, or VSD crashing?
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