Sure! Here's how I got my original numbers.
I started with a known number, the length of the Kestrel frigate (78 meters). Note that the length on the ingame display window is not accurate; it appears to display the game's collision detection radius rather than the actual ship length. Instead I used the Apocrypha ship chart.
Working from there, I grabbed a screenshot of a Kestrel fitted with Light Missile Launchers and imported it into a CAD program. The image was scaled until the Kestrel fit a line 78m long (from rear thrusters to the tip of the longer 'arm' protruding forward). A second line was then drawn over the length of one of the missile launchers.
Next I imported a screenshot of a light missile launcher in the ingame item viewer. It was scaled until it fit the line I had found in the previous step, at which point I drew lines measuring the diameter and length of an individual light missile. Note that while rear of the missiles cannot be actually seen, the launcher 'cuts off' on the bottom after a certain distance back - meaning they have to fit within that forward area.
The numbers I found for a single light missile were:
Diameter: 0.2393m
Length: 4.0496m
From there I used the volume of a cylinder, (Pi) x(Radius squared)x(Length) and found a volume of
0.1821 m3. This might seem small, but is relatively close to modern mid-size missiles such as the AGM-65 Maverick (0.1760 m3).
Now, the fuel. As I said above, we know the Nova Light Missile carries a 'nuclear' warhead; I assumed this meant fusion rather than the far-less-powerful fission - again, trying to find an upper limit here.
At this point, I made a mistake in my initial calculations: I used a straight D-D fusion reaction for simplicity's sake, as it is much easier to calculate than using the (more potent) Lithium Deuteride fuel that almost all fusion warheads actually use. I will now attempt to rectify this, although it will involve some complicated calculations.
Lithium Deuteride has a density of 820 kg/m3. Working from the above volume, this suggests we will have
149.32 kilograms of warhead fuel. Lithium Deuteride has a molar mass of 8.95 grams/mol, giving us 16,684 moles of fuel to react. Each mole contains 6.02x10^23 molecules to fuse, so altogether we have
1.0x10^28 molecules to react.
According to
this site, each lithium atom converted is going to yield around 20 MeV of energy; working from our above number of molecules above, this gives us 2.0x10^29 MeV, equivalent to about
32 petajoules or
7.66 megatons TNT.
Based on the Nova's 83 HP base damage, if we assume damage HP to be a scientific scale than this suggests around 92 kilotons per HP. A Nova torpedo would thus have a yield of around 41.4 megatons, a Nova Citadel torpedo a yield of 166 megatons, and the Doomsday Device a yield of 166 gigatons.
However, there are still three highly unrealistic expectations involved at this point:
1, the entire missile body is nothing but warhead fuel. No space for the rocket motor's fuel, guidance, or electronics is included. In reality, the warhead typically occupies less than 20%, sometimes as low as 10% of a missile body.
2, every molecule of fuel in the warhead reacts completely. I could not find an exact number for percent efficiency of modern nuclear weapons, but older devices were pegged at 25% fuel burned with modern devices being noted as "significantly" more efficient.
3, the entire yield of the weapon is directed solely at the target. Most practical designs for space-based weaponry include some form of shaped charge to direct the bulk of the explosive energy at the target. Sometimes called a "Casaba Howtizer", they can direct up to 50% of the explosive energy in a relatively narrow arc (compared to less than 10% for an unfocused device); see
this page.
So! For a more relealistic, but still high-end estimate we will make the following assumptions:
- 40% of the missile body is warhead fuel; the need for a space-consuming trigger explosive has been removed through nanites and spacemagic.
- 70% of the fuel will undergo fusion, trapped inside the body by advanced materials (AKA, more spacemagic).
- 80% of the energy will be directed at a target by some sort of shaped-charge device, again held together by spacemagic.
Under these assumptions, a Nova Light missile will hit its target with around
1.72 megatons (7.15 petajoules) of energy.Operating under these assumptions, we find a single damage point is equal to around 20.7 kT of energy. A Nova Torpedo can thus be expected to deliver 9.3 megatons of energy, a Nova Citadel torpedo 41.4 megatons, and the doomsday device 41.4 gigatons.
TO MUCH MATH, TL;DR:
Absolute upper limit (pure weapon yield):
Nova Light: 7.66 megatons
Nova Torpedo: 41.4 megatons
Nova Citadel Torpedo: 166 megatons
'Gjallarhorn' Doomsday: 166 gigatons
Feasible, but still high estimate (energy to target):
Nova Light: 1.72 megatons
Nova Torpedo: 9.3 megatons
Nova Citadel Torpedo: 41.4 megatons
'Gjallarhorn' Doomsday: 41.4 gigatons
Note that I do not believe damage HP is actually a reliable method for comparing weapon yields. Actual yield and energy delivered for the larger missiles is likely to be considerably higher; however, it does give us a rough idea of what is considered a useful weapon in New Eden.