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Old 07-15-2022, 09:42 PM   #121
Fred Brackin
 
Join Date: Aug 2007
Default Re: Does warp drive render space warfare obsolete?

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Originally Posted by Johnny1A.2 View Post
Most of the estimates I've seen for the DK run to about six times that diameter. Have they revised it down?
.....and you have caught the error that I realized I'd made a few hours after I'd posted but decided nobody else cared about. :)

Yes, the DK was thought to be about 6 miles in diameter which leads to an estimate of 200 billion tons. In Spaceships this would round up to 300 billion tins and SM+25 and 50,000. dHP.

With all the ferrophillic iridium in the K-T boundary layer that marks the impact a nickel-iron asteroid is indicated. 6 layers of iron armor as per S7 gets you dDR 1500 per layer. or dDR 9000.

Put that against the "direct" (but non-coontact)hit of a 10 megaton bomb doind 8D x10,000 and you get 280,000 pts of damage -9000 or 271,000. That takes you to -4x HP and the asteroid might still be "intact" for a loose defintion of that word. Follow up with a second 10 megatonner just enough later to avoid fratricide and you'll be very close to-10 x HP and space dust status. You'd be there if you didn't count the armor on the second hit (as if it had ablated away).

If you hire a bunch of over the hll oil industry roughnecks to dig you a hole and bury your bomb you can use a single 2.5 megaton device.
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Old 07-17-2022, 02:52 PM   #122
sir_pudding
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Default Re: Does warp drive render space warfare obsolete?

This is the same logic that let's you sink the HMS Victoy with a few thousand 9mm rounds though. Probably at least use "Extreme Damage" here.
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Old 07-17-2022, 08:21 PM   #123
Fred Brackin
 
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Default Re: Does warp drive render space warfare obsolete?

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This is the same logic that let's you sink the HMS Victoy with a few thousand 9mm rounds though. Probably at least use "Extreme Damage" here.
Nah, If you think it should take Starkely Incredible energies to blow a giant asteroid into space dust 10 megatons _is_ starkely incredible (and the nmber do say it will take at least 2).

There's been a sort of Starkely Incredible creep since the 1930s. Back then no one had even dropped a bomb that weighed more than 1000-2000 lbs. 10 million times that is a lot.
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Old 07-17-2022, 11:49 PM   #124
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Default Re: Does warp drive render space warfare obsolete?

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Originally Posted by Fred Brackin View Post
Nah, If you think it should take Starkely Incredible energies to blow a giant asteroid into space dust 10 megatons _is_ starkely incredible (and the nmber do say it will take at least 2).

There's been a sort of Starkely Incredible creep since the 1930s. Back then no one had even dropped a bomb that weighed more than 1000-2000 lbs. 10 million times that is a lot.
You'd probably need to get the bomb well inside the rock to do that, too. Which certainly isn't impossible, but it's probably more work than is necessary, since it's sufficient if you just slightly alter the rock's course. Earth is a big place, but it's a very small target that's very easy to miss, and a miss by 100 miles is as good as an AU.
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Old 07-18-2022, 12:09 AM   #125
Fred Brackin
 
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Default Re: Does warp drive render space warfare obsolete?

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Originally Posted by Johnny1A.2 View Post
You'd probably need to get the bomb well inside the rock to do that, too. .
<shrug> I gave you the answer acording to Spaceships in particular and Gurps in general. If your natural intuition tells you something different argue with the PTB who put out Gurps (and maybe wonder why you trust your intiuition so much in an area where you have so little experience).

I wil tell you one thing. 10 megatons is a _lot_. It's more than 600 times the size of the bomb that destroyed Hiroshima and 20 times the size of the main warhead of the modern US strategic arsenal.
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