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Author Topic: I used to dream...[alternate Ngoverse]  (Read 6653 times)

georgiaboy

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Re: I used to dream...[alternate Ngoverse]
« Reply #120 on: 23 December 2020, 08:58:41 »
Effect distances for a 21.672 kiloton airburst*[/size]:[/size]

Fireball radius: 210 m (0.14 km²)
[/size][size=8pt !important]Maximum size of the nuclear fireball; relevance to damage on the ground depends on the height of detonation. If it touches the ground, the amount of radioactive fallout is significantly increased. Anything inside the fireball is effectively vaporized. Minimum burst height for negligible fallout: 190 m.[/size]
Radiation radius (500 rem): 1.13 km (4.01 km²)
[size=8pt !important]500 rem ionizing radiation dose; likely fatal, in about 1 month; 15% of survivors will eventually die of cancer as a result of exposure.[/size]
Moderate blast damage radius (5 psi): 1.96 km (12.1 km²)
[size=8pt !important]At 5 psi overpressure, most residential buildings collapse, injuries are universal, fatalities are widespread. The chances of a fire starting in commercial and residential damage are high, and buildings so damaged are at high risk of spreading fire. Often used as a benchmark for moderate damage in cities. Optimal height of burst to maximize this effect is 0.87 km.[/size]
Thermal radiation radius (3rd degree burns): 2.18 km (15 km²)
[size=8pt !important]Third degree burns extend throughout the layers of skin, and are often painless because they destroy the pain nerves. They can cause severe scarring or disablement, and can require amputation. 100% probability for 3rd degree burns at this yield is 8.9 cal/cm2.[/size]
Light blast damage radius (1 psi): 5.51 km (95.4 km²)
[size=8pt !important]At a around 1 psi overpressure, glass windows can be expected to break. This can cause many injuries in a surrounding population who comes to a window after seeing the flash of a nuclear explosion (which travels faster than the pressure wave). Often used as a benchmark for light damage in cities. Optimal height of burst to maximize this effect is 1.3 km.[/size][size=8pt !important]*Detonation altitude: 870 m. (Chosen to maximize the 5 psi range.)[/size]The following errors were encountered trying to implement these settings:
  • The blast pressure equation for 20 psi failed to give a result for the given yield and height settings. The maximum detonation height for this effect to be felt on the ground is 0.79 km.
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ThePW

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idea weenie

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Re: I used to dream...[alternate Ngoverse]
« Reply #122 on: 23 December 2020, 16:54:48 »
per wiki, 0.5 grams anti-matter = 21.5 kt TNT.

https://en.wikipedia.org/wiki/Antimatter_weapon

so, 1 LRM missile weighs 8.33 kg
assume 1/3 weight warhead, 2/3 weight propellant = 2.77kg
assume 2/3 weight explosive, 1/3 weight guidance = 1.85 kg.
so using GB/s info above, place 2.016 grams antimatter in one missile

86.688 kt TNT per one LRM missile

Per GB
1000 kg Matrix = 1.4 kg antimatter
1kg matrix = 1.4 g antimatter
722 g matrix = smallest ammount viable due to containment.
1444 g matrix per warhead = 2.016 g antimatter since the amount of antimatter has to be in multiples of 722 g matrix

so the smallest amount of antimatter matrix allowable on one missile is 722 g = 1.008g antimatter = 21.672 kt TNT

??? The 722 grams is the weight for a mol of the material, not the smallest that can be carried.  (Technically the smallest would be a single buckyball with a single antihydrogen atom in the center)

The key is the math you ran, where you take the mass of the explosive (1.85 kg), divide it by 722, and that is the mass of antimatter being carried (2.56 g).  So closer to 100 kt yield per LRM.  Definitely not something you use on a ground battle, especially if the enemy has AMS.


Still, now that there is a hole in spacetime thanks to the antimatter detonation and stargate interaction, what else will come through?

Sharpnel

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Re: I used to dream...[alternate Ngoverse]
« Reply #123 on: 23 December 2020, 16:58:34 »



Still, now that there is a hole in spacetime thanks to the antimatter detonation and stargate interaction, what else will come through?
Cthulu? Satan?
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Wrangler

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Re: I used to dream...[alternate Ngoverse]
« Reply #124 on: 23 December 2020, 19:30:46 »
That was interesting and satisfying ending. (Is it the ending?)

As for the story, i've archived it, added pictures in case people want check it out someday on the Battletech Fanon Wiki.   I used a interesting gif for the beam... ;)
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georgiaboy

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Re: I used to dream...[alternate Ngoverse]
« Reply #125 on: 23 December 2020, 19:35:05 »
??? The 722 grams is the weight for a mol of the material, not the smallest that can be carried.  (Technically the smallest would be a single buckyball with a single antihydrogen atom in the center)

The key is the math you ran, where you take the mass of the explosive (1.85 kg), divide it by 722, and that is the mass of antimatter being carried (2.56 g).  So closer to 100 kt yield per LRM.  Definitely not something you use on a ground battle, especially if the enemy has AMS.
Actually no. the key is above my two entries in GB's entry. Where I got the 1000 kg matrix (1000kg of Carbon/antimatter fullerene) to 1.4 kg antimatter. which gives  1 kg Matrix to 1.4 gram antimatter.


I assumed using 722 g for a complete Matrix for ease of not having to figure out in moles. Cause I did not want to dig out my physics and engineering mathematics equations books, which I have many.
Still, now that there is a hole in spacetime thanks to the antimatter detonation and stargate interaction, what else will come through?


So that is where I got 2.016g antimatter for the amount of 1.85 kg of explosive material for the warhead.




I guess I will have to dig out those books to find what would be the minimum ability to carry on a warhead. Though that would come down to how small of a sample of the fullerene can be handled in a none science lab / industrial environment. I know these weapons would be made in a cleanroom since dealing with such small samples. But would you be using the same equipment to make the warhead filler insert as you initially used for the antimatter containment process into the fullerene?
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croaker

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Re: I used to dream...[alternate Ngoverse]
« Reply #126 on: 23 December 2020, 21:10:39 »
LRM warhead is about three kilos, so figure at least one kg of that is something to dispserse the fullerine matrix and release the antimatter, leaves you 1.5-2 kilos of matrix.  Call it 2-2.5g antimatter per LRM.

AdaC

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Re: I used to dream...[alternate Ngoverse]
« Reply #127 on: 23 December 2020, 21:11:17 »
Still, now that there is a hole in spacetime thanks to the antimatter detonation and stargate interaction, what else will come through?
I am more interested in where the beam went. If it hit Strana Mechty...

Wrangler

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Re: I used to dream...[alternate Ngoverse]
« Reply #128 on: 23 December 2020, 21:36:50 »
There still some unanswered questions.  "Why was the Amanda's ship blown into hyperspace & come floating out of gateway?" "Who are the Free Stars, who Elizabeth spoke to and why do they know how the hyperspace related stuff works?"  "Where will the story go from here?" 
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JA Baker

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Re: I used to dream...[alternate Ngoverse]
« Reply #129 on: 23 December 2020, 21:43:18 »
There still some unanswered questions.  "Why was the Amanda's ship blown into hyperspace & come floating out of gateway?"
The Spacer's Guild

Quote
"Who are the Free Stars, who Elizabeth spoke to and why do they know how the hyperspace related stuff works?"
The Spacer's Guild

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"Where will the story go from here?"
Disney Land!
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Euphonium

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Re: I used to dream...[alternate Ngoverse]
« Reply #130 on: 23 December 2020, 21:53:28 »
There still some unanswered questions.  "Why was the Amanda's ship blown into hyperspace & come floating out of gateway?"
From the Thread "The Wind at my Back, the Stars at my feet."
Everything forward of CIC was gone, most of the CIC was gone too.

she heard the choirs as a massive battlewagon rolled into position for another salvo at the cleat-kicked carcass of the Mila Weintraub...but she had a trick left, "i-in..th-three...two..."

a Clan omnifighter slashed across her vision, and she slammed the rocker switches with numb, vacuum exposed fingers.

golden light wrapped around her and the remains of her ship, as a missile passed through, and all was colorless beauty.

Amanda did something as her ship was being blown apart around her, probably an attempted jump.
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idea weenie

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Re: I used to dream...[alternate Ngoverse]
« Reply #131 on: 24 December 2020, 03:27:29 »
Actually no. the key is above my two entries in GB's entry. Where I got the 1000 kg matrix (1000kg of Carbon/antimatter fullerene) to 1.4 kg antimatter. which gives  1 kg Matrix to 1.4 gram antimatter.

I assumed using 722 g for a complete Matrix for ease of not having to figure out in moles. Cause I did not want to dig out my physics and engineering mathematics equations books, which I have many.


So that is where I got 2.016g antimatter for the amount of 1.85 kg of explosive material for the warhead.

You don't figure out how many whole mols are in use, you just need to know that the total mass is 722 units, and out of that mass 1 unit of it is antihydrogen.  As an example, you could have 722 micrograms of fullerened antimatter, and of that mass only 1 microgram of it is antimatter.  Or 1000 micrograms is fullerened antimatter, and 1.4 micrograms is the antimatter.

All you need to do is figure out the available warhead mass, divide that by 722, and that is the mass of antimatter.  The only requirement is that the available warhead mass is greater than the mass of one of the fullerened antimatter buckyballs (each is composed of 60 carbon atoms and one antihydrogen atom).

Mol mass is little more than adding up the atomic weights of all the atoms in a molecule, and saying that if you have Avogadro's number of that molecule, the total mass of all those molecules will be equal to the sum of atomic weights expressed in grams.  It is convenient for chemistry uses, but is not a minimum size (the true minimum size is one molecule of whatever you are measuring)

As an example, water's molar mass is ~18.015 g/mol (Hydrogen's atomic mass = 1.008, Oxygen's atomic mass = 15.999; 1.008+1.008+15.999 = 18.015).  This does not mean you are unable to have less than ~18 g of water, it means that if you have a mol of water molecules, it will mass ~18.015 grams.  It does mean that if you have 1000 micrograms of water, and want to figure out how much hydrogen is present, you take the 1000 micrograms, divide it by 18.015, and multiply that by 2.016, telling you that there are 111.9 micrograms of hydrogen in 1000 micrograms of water.

If you want to calculate smaller amounts you can still subdivide that down to the level of individual water molecules.


I guess I will have to dig out those books to find what would be the minimum ability to carry on a warhead. Though that would come down to how small of a sample of the fullerene can be handled in a none science lab / industrial environment. I know these weapons would be made in a cleanroom since dealing with such small samples. But would you be using the same equipment to make the warhead filler insert as you initially used for the antimatter containment process into the fullerene?

Depends on the safety precautions, and how many mountains you want to make into craters.  On the bright/glowing side, I'm sure some mining company wouldn't mind recommending that the government put the antimatter facility into a mountain that the mining company will eventually want to start mining (but have no way to cheaply deal with the overburden).  If the antimatter filling plant works, you have a safe location to make munitions.  If the antimatter plant has a hiccup, the mining company just got free demolition of the mountain they were planning on mining anyway.

Since it is the Kowloon Belters doing this, I could see the facility being built way out in the Oort cloud (2000+ AU) so nobody is nearby if it goes boom.  The details of that facility though, it sounds like you have more experience about such designs.

AdaC

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Re: I used to dream...[alternate Ngoverse]
« Reply #132 on: 24 December 2020, 06:15:11 »
You don't figure out how many whole mols are in use, you just need to know that the total mass is 722 units, and out of that mass 1 unit of it is antihydrogen. 
That is an assumption. There is no reason why a complete bucky sphere can't have more than 1 unit of antihydrogen in it.

Giovanni Blasini

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Re: I used to dream...[alternate Ngoverse]
« Reply #133 on: 24 December 2020, 06:25:42 »
There is, actually.  Buckyballs have only been able to capture single ions. Ionic antihydrogen is a single antiproton or, theoretically, if there are antineutrons involved, antideuterium or antitritium.

You're not going to get molecular antihydrogen, because it has to be ionic, and antihydrogen would presumably have just as many orbitals as a hydrogen atom would, just for positrons instead of electrons.  The chemistry doesn't work out for anything other than negative antihydrogen atoms, just like the chemistry doesn't work out for negative hydrogen atoms.
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smdvogrin

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Re: I used to dream...[alternate Ngoverse]
« Reply #134 on: 28 December 2020, 16:53:19 »
All you need to do is figure out the available warhead mass, divide that by 722, and that is the mass of antimatter. 

Available warhead mass minus the weight of the needed "primer" mechanism to start the reaction.  I'm not super familiar with the physics, other than it's uses in Sci-Fi, but my understanding that is that Fullerined AM is stable enough you would need something more than the impact to set it off.  (Would a small amount of conventional explosives be enough, or would it need something more exotic?)

kindalas

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Re: I used to dream...[alternate Ngoverse]
« Reply #135 on: 28 December 2020, 18:19:23 »
Available warhead mass minus the weight of the needed "primer" mechanism to start the reaction.  I'm not super familiar with the physics, other than it's uses in Sci-Fi, but my understanding that is that Fullerined AM is stable enough you would need something more than the impact to set it off.  (Would a small amount of conventional explosives be enough, or would it need something more exotic?)

A small laser could do it. All you need to do is breach a single fullerine molecule and then the chain reaction would take care of it.

Wrangler

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Re: I used to dream...[alternate Ngoverse]
« Reply #136 on: 28 December 2020, 19:35:03 »
Using stats from the stuff Kindalas published, I've posted on the Sampan III Class Cutter on the Battletech Fan wiki.

I sourced a picture for it. 

EDIT: Link fixed. Sorry everyone. Not sure how copy/paste made that kind typoed.
« Last Edit: 29 December 2020, 07:55:52 by Wrangler »
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kindalas

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Re: I used to dream...[alternate Ngoverse]
« Reply #137 on: 28 December 2020, 22:41:08 »
Using stats from the stuff Kindalas published, I've posted thew Sampan III Class Cutter on the Battletech Fan wiki.

I sourced a picture for it.

Is it ok to edit it? I found some mistakes. It has 4 AR10s and a LiFu Battery

Wrangler

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Re: I used to dream...[alternate Ngoverse]
« Reply #138 on: 28 December 2020, 23:12:41 »
Is it ok to edit it? I found some mistakes. It has 4 AR10s and a LiFu Battery
Go for it.
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"How do you defeat a Dragau? Shoot the damn thing. Lots." - Jellico 
"No, it's a "Most Awesome Blues Brothers scene Reenactment EVER" waiting to happen." VotW Destrier - Weirdo  
"It's 200 LY to Sian, we got a full load of shells, a half a platoon of Grenadiers, it's exploding outside, and we're wearing flak jackets." VoTW Destrier - Misterpants
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kindalas

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Re: I used to dream...[alternate Ngoverse]
« Reply #139 on: 28 December 2020, 23:47:15 »
Go for it.

Did my edits, I'm glad you are doing this. But keep your eyes out for when Cannonshop selects the winning design.

I have a habit of not following his design challenge rules 100% and they might not always fit with his story needs.

Wrangler

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Re: I used to dream...[alternate Ngoverse]
« Reply #140 on: 29 December 2020, 00:14:35 »
Did my edits, I'm glad you are doing this. But keep your eyes out for when Cannonshop selects the winning design.

I have a habit of not following his design challenge rules 100% and they might not always fit with his story needs.
No problem. The wiki open for all to use.  I just happen live there these days.  I wish i was able find better picture. The free image, someone made with Kebal space program seem to fit what the ship looked like.  I wish could found image for the side.
"Men, fetch the Urbanmechs.  We have an interrogation to attend to." - jklantern
"How do you defeat a Dragau? Shoot the damn thing. Lots." - Jellico 
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"It's 200 LY to Sian, we got a full load of shells, a half a platoon of Grenadiers, it's exploding outside, and we're wearing flak jackets." VoTW Destrier - Misterpants
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DOC_Agren

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Re: I used to dream...[alternate Ngoverse]
« Reply #141 on: 29 December 2020, 01:25:15 »
there nothing there for Sampan III
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idea weenie

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Re: I used to dream...[alternate Ngoverse]
« Reply #142 on: 29 December 2020, 01:31:24 »
there nothing there for Sampan III

The link left off one letter from the ship name.  Here is the correct link:
https://battletechfanon.fandom.com/wiki/Sampan_III_Class_Cutter_(WarShip)

DOC_Agren

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Re: I used to dream...[alternate Ngoverse]
« Reply #143 on: 29 December 2020, 02:27:39 »
love the picture
"For the Angel of Death spread his wings on the blast, And breathed in the face of the foe as he passed:And the eyes of the sleepers waxed deadly and chill, And their hearts but once heaved, and for ever grew still!"

Wrangler

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Re: I used to dream...[alternate Ngoverse]
« Reply #144 on: 29 December 2020, 07:56:32 »
I've fixed the link.  100% not sure how i typoed copy/paste.  xp
"Men, fetch the Urbanmechs.  We have an interrogation to attend to." - jklantern
"How do you defeat a Dragau? Shoot the damn thing. Lots." - Jellico 
"No, it's a "Most Awesome Blues Brothers scene Reenactment EVER" waiting to happen." VotW Destrier - Weirdo  
"It's 200 LY to Sian, we got a full load of shells, a half a platoon of Grenadiers, it's exploding outside, and we're wearing flak jackets." VoTW Destrier - Misterpants
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