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Author Topic: Torpedo yield estimation thread  (Read 228 times)

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Torpedo yield estimation thread
« on: December 04, 2020, 03:12:34 pm »
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Proton torpedo explosive power from Wiki info
« Reply #1 on: December 04, 2020, 03:15:50 pm »
A Proton torpedo has a yield of 30g. [1] 30g of TNT equals 125520 joules. [2] 125520 joules is enough to melt-vaporize approximately 11 grams of silicon, or 17 grams of iron. Torpedoes have "shaped charges" so almost all the energy goes to the target.


Oh, wait. I forgot. The torpedo also delivers a payload of electrons, with would greatly add to the total.


[1]: https://rodentwarsnet.createaforum.com/new-board-5/plasma-torpedoes/
[2]: https://www.justintools.com/unit-conversion/energy.php?k1=grams-of-TNT&k2=joules
« Last Edit: January 13, 2022, 10:32:53 am by Dutch »
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Asteroid destruction
« Reply #2 on: December 11, 2020, 06:52:10 pm »


We don't have asteroids in RW, but I'll look at this anyway. I will assume that the asteroid is 10 feet in diameter and is made of nickel-iron. Iron takes 1.28 MJ/kg to melt. The asteroid weighs about 116688.49 kg. And the debris is hurled away at roughly 10 m/s. So the energy to just melt it is ~149361 MJ, and the energy to hurl it is 5.8344 MJ.

So the two Photon torpedoes are dealing a total of approximately 149367 MJ (minimum). That's 74683.5 MJ each, or ~17.85 tons of TNT. [1]
Confidence in figure: 8/10 if we ignore scaling


[1]: https://www.justintools.com/unit-conversion/energy.php?k1=megajoules&k2=tons-of-TNT
« Last Edit: January 13, 2022, 10:42:08 am by Dutch »
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Photon hits Galaxy-class stardrive section
« Reply #3 on: December 19, 2020, 08:54:11 pm »


The blast seems to melt about 20g of steel, so the energy needed is about 150000 joules (0.15 megajoules). So the yield of the torpedo is about 36g of TNT. [1] Probably set to half-yield for some reason. (These estimations are likely high, too.)
Confidence: 6/10

[1]: https://www.justintools.com/unit-conversion/energy.php?k1=joules&k2=grams-of-TNT
« Last Edit: January 13, 2022, 10:42:54 am by Dutch »
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Torpedo hits building
« Reply #4 on: December 21, 2020, 12:35:30 pm »


Ignore the horrible CGI.
     The first explosion seems to use about 500g of TNT. Ten times a realistic amount.
Confidence: 5/10
« Last Edit: January 13, 2022, 10:43:20 am by Dutch »
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Photon torpedoes hit Borg cube
« Reply #5 on: December 27, 2020, 05:42:28 pm »


These estimates are maximim. The actual yields might be as low as 80gTNT.

First explosion:
     It appears that about 400 grams of iron are vaporized. That's about 700g of TNT, or 3MJ.

Second:
     Maybe 350g are vaporized. That would require approximately 638gTNT—2.67MJ.

Third:
     I think this one vaporized around 600g, so the yield is 1.09 kilograms of TNT, or 4.57MJ.

All three are too big, but otherwise realistic.

Rating: 8/10
« Last Edit: March 04, 2021, 04:05:00 pm by Dutch »
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Dominion torpedoes
« Reply #6 on: December 28, 2020, 01:20:20 pm »


The torpedoes appear to have yields of 40-300g.

Rating: 6/10
« Last Edit: March 04, 2021, 04:05:09 pm by Dutch »
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