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AHI Thruster Rebalance
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Type: Mod
Mod category: Other
Tags: NoScripts
File Size
Posted
Updated
250.831 KB
10 Dec, 2016 @ 9:53pm
4 Feb, 2022 @ 3:17am
12 Change Notes ( view )
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Thalyn
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AHI Thruster Rebalance

Description
Latest build: 20210204 (01_200_025)

This mod is intended to completely rebalance the default thrusters based more closely on their physical size and the efficiency properties you might encounter in the real world.

Recommended to be used in tandem with an AHI Gas Rebalance mod.

-----

New to this update:
NB All changes compared to the previous release.
- Support for Warfare 2 Broadside patch and DLC.

- Ion
Nothing.

- Hydrogen
Nothing.

- Atmospheric
Nothing.

Why?

This is primarily a maintenance build. All definitions have been re-established based on the current default declarations.

NB This means Tiered Updates have been added. I don't know enough about what the values mean to make any specific changes, but don't want to inadvertently cause engine issues by leaving them out.

-----

Previous changes:
- All thruster outputs scaled based on their Small Grid, Small variant.
- All thruster power requriements based on thrust output.

- Atmospheric Thrusters:
* Base thrust unchanged (Small Grid Small Atmospheric Thruster generates up to 96kN).
* Large Thruster thrust set to 900% of Small Thruster thrust.
* Large Grid thrust set to 2500% of Small Grid thrust.
* Weight increases proportional to the total surface area (small to large = 6x increase).
* Power to thrust fixed at 60% (eg 10W produces 6N).

- Hydrogen Thrusters:
* Increased base thrust by ~108.33% (Small Grid Small Hydrogen Thruster now generate up to 205kN).
* Large Thruster thrust set to 900% of Small Thruster output.
* Large Grid thrust set to 2500% of Small Grid output.
* Power to thrust fixed at 40% (eg 10W produces 4N).

- Ion Thrusters:
* Base thrust unchanged (Small Grid Small Ion Thruster generates up to 14.4kN).
* Large Thruster thrust set to 1200% of Small Thruster output.
* Large Grid thrust set to 2500% of Small Grid output.
* Power to thrust fixed at 70% (eg 10W produces 7N).
* Materials increased based on surface area (steel plates and tubes) and engine volume.

AHI Gas Rebalance (Realistic) is available here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=612067769

AHI Gas Rebalance (Arcade) is available here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=842659131

Please be aware that I am not a chemist, physicist or aerospace engineer. I have no formal training in any field even slighly related to this subject, plus my ability to concentrate is limited, so mistakes could very well be present. If you find anything wrong or questionable, please comment and explain why so I can look into fixing it.
18 Comments
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Thalyn  [author] 9 Jul, 2020 @ 11:05pm 
There we go. New version should be up.

Let me know if I've missed anything or messed anything up. I got a little time to do some file editing today but not really enough to test everything thoroughly, so I'm hoping that there hasn't been any additional backend changes I need to accommodate for.
Inq182 9 Jul, 2020 @ 7:23am 
Hey no problem was just curious. Keep up the good work!
Thalyn  [author] 9 Jul, 2020 @ 6:35am 
Yeah. I've been meaning to get around to it but things have been a little complicated of late so it just hasn't happened. From what I can tell it shouldn't be any problem to do the same to the DLC blocks as well.

I'll try to get onto it over the next 2-3 days. And my apologies for not getting it done sooner.
Inq182 8 Jul, 2020 @ 8:43pm 
Will you be updating this to match the newest update? The materials don't match on the DLC thrusters and I haven't tested but I'll guess they also use the vanilla values
Thalyn  [author] 20 Aug, 2018 @ 12:47am 
Just as a theoretical mumbling, simulating Magnetised Target Fusion (MTF) thrust, even at only 50% efficiency (the other 50% presumably being used to sustain the reaction or simply wasted in this case) would yield an Isp of around 35,690.07 seconds., some 76.79x higher. In tandem with using pure hydrogen instead of COH (a further 33% increase) this would result in about 100x longer burns (eg 78 seconds becomes 7,800 seconds, or over 2 hours).

That seems a bit much, but could be worth considering (perhaps at only 5% efficency?).
Thalyn  [author] 20 Aug, 2018 @ 12:20am 
In all honesty, I don't like those numbers. That's way too little burn (even if you use 3 of the default thrusters on a single tank you get over 3x the burn time) for my tastes, but this mod has never been about "like" - it's been about accuracy.

I'm going to play around with the numbers a little to see what the final results are, but its seeming like I'm going to have to modify my "Arcade" gas balance mod (switch from 1/12 burn time to 12x, since 1,044 seconds is acceptible) or potentially look into simulating the hydrogen thrusters as nuclear rather than chemical.
Thalyn  [author] 20 Aug, 2018 @ 12:13am 
Converting that Isp into TSFC so I can more easily simulate it yields 101,972 / 464.78 = 219.4g/kN·s, whichi s fractionally better than the 225g/kN·s of the SSME in a vacuum. Because it's feasible, I'm again going to use this for my simulations.

In terms of actual numbers, this would mean the Small Grid, Small Hydrogen Thruster would consume up to 44,976.68g of fuel per second to produce its 205kN. Rounding to a nice 45kg (may or may not be the final value) would mean it's using 114.57L/s (with my gas changes), so a full Small Grid tank (10kL with my mod) would burn for approximately 87 seconds. This compares to the default 82kN thruster yielding ~732 seconds from the default 80kU tank.
Thalyn  [author] 19 Aug, 2018 @ 11:46pm 
Following on from my ramblings on the gas rebalancing, I'm going to be touching on this mod a little. I'm intending on following through with my atmospheric change, which will result in the small grid variants having half the thrust (basically the small one will be the same as base), but mostly I'm going to be looking into efficiency - especially on the hydrogen side.

I've recently been looking into Isp and TSFC, which basically relate to fuel consumption for a given power output. At an exact 2:1 ratio (which I'm simulating with my gasses), the absolute maximum theoretical Isp should be roughly 464.78 seconds (working from 10.37MJ/kg, which is slightly lower than traditional 4:1 LOH). This is only slightly higher than the typical 450-ish of production engines, so I'll work with it unaltered.
Thalyn  [author] 18 Apr, 2017 @ 12:24am 
I forgot to say earlier, however, that I have contemplated pulling the Atmo base back down to 80kN and restoring the Large Grid scaling to 25x. This would halve the output on the Small Grid while keeping the Large Grid identical, and may in turn assist with some NPC ship interaction.
Thalyn  [author] 17 Apr, 2017 @ 7:48pm 
Balancing the Atmos against any current turbine engine is difficult, since the atmos are purely electrical where current turbines operate off a combustion fuel source within the shroud itself. This changes the whole situation quite a big before even getting into the differences in mechanical setup - number of points of contact, blade count, blade size, blade pitch, etc.

As it stands, the Atmos are just set up such that you can make a ship - not a clump of thrusters with a cockpit. They're definitely stronger than they should be but the absence of aerodynamics (or an approximation there-of) basically makes that a necessity. Efficiency is simply based on an approximation and the fact that 1 Joule should be able to provide ~1.414 Newton-seconds.