[1.8+] Real Fuels

[Starwaster]

So would the entries for structural and ballon need the loss rate removed ?

Fun fact: removal of loss_rate is technically optional if the resource has vsp assigned. The code checks for that first and ignores loss_rate. Removing it was just so that people didn't see it and assume it was still serving a purpose.

Also, I re-replied to your first message while you were typing that out. So refresh and read

[Svm420]

Fun fact: removal of loss_rate is technically optional if the resource has vsp assigned. The code checks for that first and ignores loss_rate. Removing it was just so that people didn't see it and assume it was still serving a purpose.

Also, I re-replied to your first message while you were typing that out. So refresh and read

Thanks for the replies. Experience always trumps what we think. I was poking my nose is something without any knowledge and kinda wasted time so sorry for that, but glad you still made it clear.

[Svm420]

Hmm any chance this error is related to trying your update Starwaster?

MissingFieldException: Field 'SolverEngines.ModuleEnginesSolver.actualThrottle' not found.
  at SolverEngines.ModuleEnginesSolver.FixedUpdate () [0x00000] in <filename unknown>:0 
  at RealFuels.ModuleEnginesRF.FixedUpdate () [0x00000] in <filename unknown>:0 

I get this spammed on the launch pad and can't use any engines thought it may be caused by updating real fuels without solver engines? If not a bug hunting I will go...

[Starwaster]

Hmm any chance this error is related to trying your update Starwaster?

MissingFieldException: Field 'SolverEngines.ModuleEnginesSolver.actualThrottle' not found.
  at SolverEngines.ModuleEnginesSolver.FixedUpdate () [0x00000] in <filename unknown>:0 
  at RealFuels.ModuleEnginesRF.FixedUpdate () [0x00000] in <filename unknown>:0 

I get this spammed on the launch pad and can't use any engines thought it may be caused by updating real fuels without solver engines? If not a bug hunting I will go...

It's possible that I compiled against the wrong version of SolverEngines. I'll look into it. Does it go away if you restore the original current RealFuels.dll file?

Try re-downloading. I was definitely linked to a different SolverEngines file than is in the latest RF. I forgot that I had changed my working directories to a different KSP installation and I was still linked to the old ones.

Edited October 9, 2015 by Starwaster

[Svm420]

It's possible that I compiled against the wrong version of SolverEngines. I'll look into it. Does it go away if you restore the original current RealFuels.dll file?

Try re-downloading. I was definitely linked to a different SolverEngines file than is in the latest RF. I forgot that I had changed my working directories to a different KSP installation and I was still linked to the old ones.

Thanks!

[Svm420]

Alright now Starwaster this is your second strike it is still spamming I have logs and Mm cache if you want them but it is still the same from before.

[Starwaster]

Alright now Starwaster this is your second strike it is still spamming I have logs and Mm cache if you want them but it is still the same from before.

Are you updated to the latest RF? All files? (the dll's)

[StoryMusgrave]

Right.

Since I didn't have this issue for previous launches of the same craft, I can't say for sure what is the cause. But I'll instead post my save game so anyone who wants to test can take a look at it.

The craft named "Lunar Mission Mother Ship" is the one in question.

Also I'll put up my craft file so you can test that alone. For the craft you'll need KW Rocketry, HullcamVDS, BoxSat, COSMOS SSPP, Procedural tanks, Procedural Fairings, FASA Launch Towers, RealFuels and the Stockalike config for it.

For the mods I have, there's a whole bunch so I'll put that inside a spoiler.

1.0.4

(Stock - Adjusted transmit science scaler for Accelorometer, Barometer, Gravitometer, Thermometer, Atmospheric Sensor.

Increased average contract number to 20.)

Active Texture Management (Agressive, w/ Naten's Configs & Original Configs)

Advanced Jet Engine

Alternate Resource Panel

Astronomer's Visual Pack

Auto Pruner (pruned KW SRB,Stock Heat Shild, KOSMOS SSPP, RO Global Tank, RO Global Fairing)

--Original Prune list: KOSMOS_SSPP, KW_SRB, RSCapsuledyne_Tank, Stock_Fairings, Stock_HeatShield, Renewed Stock Tanks list/RO Global Tanks list/Stock Wings list(incomplete)

B9 Aerospace (Infodrive only/adjusted mass to 0.01)

B9 Aerospace Procedural Parts

Better Buoyancy

BoxSat (1.0.2 patched)

ClampsBeGone

Cloud Configuration for OPM (AST-Int)

Community Tech Tree

Connected Living Space (w/ Taurus HCV config)

Contract Configurator (Field Research, Tourism Plus, Useful Space Stations)

Contract Window+

Crowd Sourced Science

Deadly Reentry

Default Throttle

Distant Object Enhancement

Docking Port Alignment Indicator

Editor Extensions

Enhanced Navball

Environmental Visual Enhancements

Extraplanetary Launchpads

FASA Launch Towers

Ferram Aerospace Resarch

Final Frontier

Flight Manager for Reusable Stages (1.0.2 ver)

Heat Management (w/ Community Tech Tree patch)

Hullcam VDS

Impact!

Infernal Robotics Rework (Core)

K2 Command Pod (Ablator added)

Kerbal Alarm Clock

Kerbal Attachment System

Kerbal Construction Time

Kerbal Engineer Redux

Kerbal Inventory System

Kerbal Joint Reinforcement

Kopernicus

Kopernicus Expansion

kOS

KOSMOS SSPP (Fixed Node attachement direction)

KSP TOT

KW Rocketry (1.0.2 ver w/ community 1.0.4 patch) ==WAITING UPDATE==

Near Future Technologies (Solar, Electric, Propultion, Decaying RTG, Low thurust Electric)

Outer Planets Mod

Persistent Rotation

Planet Shine

Portrait Stats

Precise Node

Procedural Fairings

Procedural Parts

Raster Prop Monitor

RCS Build Aid

Real Fuels (w/ stockalike config, realistic engine mass false)

Real Chute (w/ Community Tech Tree Patch)

Real Heat (WIP 2015/7/15)

Real Plume (w/ Stock config)

Remote Tech

SCANsat

Ship Manifest

Simple Orbit Calculator

SmokeScreen

Stock Bug Fix

TAC Fuel Balancer

TAC Life Support

Taurus HCV (w/ Community Tech Tree patch)

Texture Replacer (w/ Rareden's Real 8k Skybox)

Thermal Monitor

Toolbar

Transfer Window Planner

Trajectories (1.0.2 ver)

Tweak Scale

USI Kolonization Systems

Waypoint Manager

Here's the files: Save Game, Craft File

I'll also post the Module manager cache for this specific engine if you want to take a look at that also.

UrlConfig
{
    name = KW2mengineSPS
    type = PART
    parentUrl = KWRocketry/Parts/Engines/2mSPS/part
    url = KWRocketry/Parts/Engines/2mSPS/part/KW2mengineSPS
    PART
    {
        name = KW2mengineSPS
        module = Part
        author = KW Rocketry
        node_stack_top = 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 2
        node_stack_top2 = 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 2
        node_stack_bottom = 0.0, -0.687, 0.0, 0.0, -1.0, 0.0, 2
        TechRequired = heavyRocketry
        cost = 526
        category = Engine
        subcategory = 0
        title = KW Rocketry Hypergolic Service Propulsion System
        manufacturer = KW Rocketry
        description = A simple motor for small spacecraft that shares the same propellants as your reaction control system. Built for efficiency in a vacuum. Plume configured by RealPlume.
        attachRules = 1,0,1,1,0
        mass = 0.59
        dragModelType = default
        maximum_drag = 0.2
        minimum_drag = 0.2
        angularDrag = 2
        crashTolerance = 7
        breakingForce = 200
        breakingTorque = 200
        maxTemp = 1523.15
        emissiveConstant = 0.8
        stagingIcon = LIQUID_ENGINE
        entryCost = 2630
        oldMaxTemp = 1531
        tempMult = 0.994872632266493
        MODEL
        {
            model = KWRocketry/Parts/Engines/2mSPS/KW_2mEngine_SPS_M
            scale = 1, 1, 1
        }
        MODEL
        {
            model = KWRocketry/Parts/Fairings/UnifiedFairings/KW_Auto_2mSPSShroud
            scale = 1, 1, 1
        }
        MODULE
        {
            name = ModuleEnginesRF
            thrustVectorTransformName = NozzleTransform
            engineID = KWSPSLE
            runningEffectName = running_closed
            exhaustDamage = True
            ignitionThreshold = 0.1
            minThrust = 0
            maxThrust = 200
            heatProduction = 95.5077726975833
            atmosphereCurve
            {
                key = 0 330
                key = 1 116
                key = 3 0.001
            }
            PROPELLANT
            {
                name = MMH
                ratio = 49.965541
                DrawGauge = True
                ResourceFlowMode = STACK_PRIORITY_SEARCH
            }
            PROPELLANT
            {
                name = NTO
                ratio = 50.034459
                ResourceFlowMode = STACK_PRIORITY_SEARCH
            }
        }
        MODULE
        {
            name = ModuleGimbal
            gimbalTransformName = NozzleTransform
            gimbalRange = 3
            useGimbalResponseSpeed = true
            gimbalResponseSpeed = 15
        }
        MODULE
        {
            name = ModuleAnimateEmissive
            ThermalAnim = GriffonEmissiveAnim
            useHeat = True
            lerpMin = 0
            lerpMax = 750
            lerpOffset = -150
            lerpPow = 0.875
            lerpOuterScalar = 1
            lerpInnerScalar = 1
        }
        MODULE
        {
            name = ModuleAlternator
            RESOURCE
            {
                name = ElectricCharge
                rate = 4
            }
        }
        MODULE
        {
            name = ModuleJettison
            jettisonName = 2mSPSShroud
            bottomNodeName = bottom
            isFairing = True
            jettisonedObjectMass = 0.1
            jettisonForce = 5
            jettisonDirection = 0 0 1
        }
        MODULE
        {
            name = ModuleSurfaceFX
            thrustProviderModuleIndex = 0
            fxMax = 0.4
            maxDistance = 30
            falloff = 1.5
            thrustTransformName = NozzleTransform
        }
        RESOURCE
        {
            name = ElectricCharge
            amount = 2
            maxAmount = 2
            isTweakable = false
            hideFlow = true
        }
        MODULE
        {
            name = BBModule
        }
        MODULE
        {
            name = FMRS_PM
            parent_vessel = 0
        }
        MODULE
        {
            name = MGFix
            plusEnabled = True
        }
        MODULE
        {
            name = ThermalMonitor
        }
        MODULE
        {
            name = TweakScale
            type = stack
            defaultScale = 2.5
            TWEAKSCALEEXPONENTS
            {
                mass = 2.5
            }
        }
        MODULE
        {
            name = USI_ModuleRecycleablePart
            Menu = Scrap Part
            ResourceName = Recyclables
            Efficiency = .8
        }
        MODULE
        {
            name = USI_ModuleRecycleablePart
            Menu = Salvage Part
            ResourceName = SpecializedParts
            Efficiency = .4
        }
        MODULE
        {
            name = GeometryPartModule
        }
        MODULE
        {
            name = FARAeroPartModule
        }
        MODULE
        {
            name = FARPartModule
        }
        MODULE
        {
            name = KOSNameTag
        }
        MODULE
        {
            name = ModuleEngineConfigs
            techLevel = 4
            origTechLevel = 4
            engineType = O
            origMass = 0.59
            configuration = MMH+NTO
            modded = false
            type = ModuleEnginesRF
            CONFIG
            {
                name = MMH+NTO
                maxThrust = 200
                heatProduction = 95.5077726975833
                IspSL = 0.9600
                IspV = 0.9500
                throttle = 0
                powerEffectName = Hypergolic-OMS-White
                PROPELLANT
                {
                    name = MMH
                    ratio = 49.96554100620262
                    DrawGauge = True
                    ResourceFlowMode = STACK_PRIORITY_SEARCH
                }
                PROPELLANT
                {
                    name = NTO
                    ratio = 50.03445899379738
                    ResourceFlowMode = STACK_PRIORITY_SEARCH
                }
                ModuleEngineIgnitor
                {
                    ignitionsAvailable = 24
                    useUllageSimulation = true
                    autoIgnitionTemperature = 800
                    ignitorType = Electric
                    IGNITOR_RESOURCE
                    {
                        name = ElectricCharge
                        amount = 2
                    }
                }
            }
            CONFIG
            {
                name = UDMH+NTO
                maxThrust = 200
                heatProduction = 95.5077726975833
                IspSL = 0.9500
                IspV = 0.9500
                throttle = 0
                powerEffectName = Hypergolic-OMS-White
                PROPELLANT
                {
                    name = UDMH
                    ratio = 47.82321899736148
                    DrawGauge = True
                    ResourceFlowMode = STACK_PRIORITY_SEARCH
                }
                PROPELLANT
                {
                    name = NTO
                    ratio = 52.17678100263852
                    ResourceFlowMode = STACK_PRIORITY_SEARCH
                }
                ModuleEngineIgnitor
                {
                    ignitionsAvailable = 24
                    useUllageSimulation = true
                    autoIgnitionTemperature = 800
                    ignitorType = Electric
                    IGNITOR_RESOURCE
                    {
                        name = ElectricCharge
                        amount = 2
                    }
                }
            }
        }
        ModuleEngineIgnitor
        {
            ignitionsAvailable = 24
            autoIgnitionTemperature = 800
            useUllageSimulation = true
        }
        PLUME
        {
            name = Hypergolic-OMS-White
            transformName = NozzleTransform
            localRotation = 0,0,0
            localPosition = 0,0,-0.84
            fixedScale = 7
            energy = 1
            speed = 1
            flareScale = 7
            plumeScale = 7
            flarePosition = 0,0,-0.84
            plumePosition = 0,0,-0.84
        }
        EFFECTS
        {
            Hypergolic-OMS-White
            {
                MODEL_MULTI_PARTICLE_PERSIST
                {
                    transformName = NozzleTransform
                    localRotation = 0,0,0
                    localPosition = 0,0,-0.84
                    fixedScale = 7
                    energy = 1
                    speed = 1
                    name = plume
                    modelName = RealPlume/MP_Nazari_FX/ssmeflame2
                    fixedEmissions = false
                    sizeClamp = 50
                    randomInitalVelocityOffsetMaxRadius = 0
                    randConeEmit
                    {
                        density = 1 0.2
                        density = 0.3 0.4
                        density = 0 0.7
                    }
                    logGrow
                    {
                        density = 1.0 2
                        density = 0.1 2
                        density = 0.0 2
                    }
                    logGrowScale
                    {
                        density = 1.0 0.0
                        density = 0.8 0
                        density = 0.46 0
                        density = 0.2 2
                        density = 0.1 3
                        density = 0.0 3
                    }
                    linGrow
                    {
                        density = 1.0 0
                        density = 0.46 0.0
                        density = 0.2 5
                        density = 0.05 7
                        density = 0.0 8
                    }
                    grow
                    {
                        density = 1 -0.99
                        density = 0.8 0
                        density = 0.0 0
                    }
                    speed
                    {
                        density = 1.0 0.7
                        density = 0.46 1
                        density = 0.2 1.5
                        density = 0.05 1.8
                        density = 0.0 1.9
                    }
                    emission
                    {
                        density = 1.0 1.5
                        density = 0.8 1.5
                        density = 0.2 1.7
                        density = 0.1 1.7
                        density = 0.05 2
                        density = 0.0 2.5
                        power = 1 1
                        power = 0.01 0.2
                        power = 0 0
                    }
                    energy
                    {
                        density = 1.0 2
                        density = 0.3 1.7
                        density = 0.05 0.8
                        density = 0.0 0.7
                    }
                    size
                    {
                        density = 1.0 0.85
                        density = 0.8 0.80
                        density = 0.2 0.65
                        density = 0.0 0.75
                    }
                }
                AUDIO
                {
                    channel = Ship
                    clip = RealPlume/KW_Sounds/sound_spsloop
                    volume = 0.0 0.0
                    volume = 1.0 1.5
                    pitch = 0.0 1.0
                    pitch = 1.0 1.0
                    loop = true
                }
            }
            engage
            {
                AUDIO
                {
                    channel = Ship
                    clip = RealPlume/KW_Sounds/sound_sps
                    volume = 1.5
                    pitch = 1.0
                    loop = false
                }
            }
            disengage
            {
                AUDIO
                {
                    channel = Ship
                    clip = sound_vent_soft
                    volume = 1.0
                    pitch = 2.0
                    loop = false
                }
            }
            flameout
            {
                AUDIO
                {
                    channel = Ship
                    clip = sound_explosion_low
                    volume = 1.0
                    pitch = 2.0
                    loop = false
                }
            }
        }
    }
}

Well. Looking at your log you have this

(Filename: C:/buildslave/unity/build/artifacts/StandalonePlayerGenerated/UnityEngineDebug.cpp Line: 56)


dT is NaN! tA: NaN, E: NaN, M: NaN, T: NaN

Not entirely sure where it's coming from, but, there is your problem. Your game is being spammed.

[ebigunso]

Well. Looking at your log you have this

(Filename: C:/buildslave/unity/build/artifacts/StandalonePlayerGenerated/UnityEngineDebug.cpp Line: 56)


dT is NaN! tA: NaN, E: NaN, M: NaN, T: NaN

Not entirely sure where it's coming from, but, there is your problem. Your game is being spammed.

Huh... ok.

I have no idea where that came from either, and not at all see how that affects things so I'll let those that know handle the bug finding.

Sorry I'm not being helpful at all.

[Padishar]

Huh... ok.

I have no idea where that came from either, and not at all see how that affects things so I'll let those that know handle the bug finding.

Sorry I'm not being helpful at all.

Do you run KER by any chance and have you recently added the "Time to atmosphere" readout?

This happens when your "orbit" is entirely within the atmosphere due to a bug in that recently added readout (I'll hold my hands up here, it was me and it was a silly thing that should have been caught in testing). The bug has been fixed for the next version of KER. It is harmless other than the excessive spam slowing the game down. Turn off the readout while flying or run KSP with the -nolog option (or, get the latest code from cybutek's repo and build a fixed version for yourself).

Edited October 9, 2015 by Padishar

[ebigunso]

Do you run KER by any chance and have you recently added the "Time to atmosphere" readout?

This happens when your "orbit" is entirely within the atmosphere due to a bug in that recently added readout (I'll hold my hands up here, it was me and it was a silly thing that should have been caught in testing). The bug has been fixed for the next version of KER. It is harmless other than the excessive spam slowing the game down. Turn off the readout while flying or run KSP with the -nolog option (or, get the latest code from cybutek's repo and build a fixed version for yourself).

Thanks, I had that on. I'll try removing that readout for now

Although the strange thing is, that this orbit was in space, not inside the atmosphere... Still it did have a part of it in the atmosphere.

[Svm420]

Are you updated to the latest RF? All files? (the dll's)

Yep . MM cache Logs LMK if you want anything else.

[Starwaster]

Yep . MM cache Logs LMK if you want anything else.

Ok, try again. I've gone through all assembly and project references with a fine toothed comb and verified everything and rebuilt.

https://www.dropbox.com/s/25hzx1lrlcw72w1/RealFuels_Boiloff_Revamp.zip?dl=1

BTW, this requires the very latest Real Fuels before installing these files on top. Can't stress that enough.

Edited October 9, 2015 by Starwaster

[Svm420]

Ok, try again. I've gone through all assembly and project references with a fine toothed comb and verified everything and rebuilt.

https://www.dropbox.com/s/25hzx1lrlcw72w1/RealFuels_Boiloff_Revamp.zip?dl=1

BTW, this requires the very latest Real Fuels before installing these files on top. Can't stress that enough.

Third time's the charm . Seem to work great appreciate the rebuilds. Will I have any issue using the current version of your heat pump mod with this release of RF? I thought you posted something about it with this , but I can't find anything now so I may have imagined it.

[ebigunso]

OK I've gone to remove "Time to Atmosphere" on the KER displays, but the fuel Unstable problem still persists. This looks like it's not related to the KER log spam issue.

I would be very grateful if anyone can go on to find out what this is all about... or at least help me find out.

[StoryMusgrave]

@ebigunso: What needs to happen is get steps to reproduce the error. Your save file means nothing, other than it's likely corrupted in some way shape or form. If you can reproduce the steps to get the same error, then there is a problem.

I'd also suggest you start with a limited mod set when you reproduce. Use RealFuels, stock alike, and KW and that's it. Then you can be sure it's RealFuels and/or engine configs for it.

[LividPumpkin]

Does anyone know how to make the Lqd Hydrogen to not boil off that quickly ?

[ebigunso]

Does anyone know how to make the Lqd Hydrogen to not boil off that quickly ?

You can use the Heat Pump mod to actively cool the tanks.

http://forum.kerbalspaceprogram.com/threads/128502

[ebigunso]

I have tested my issue with reduced mods. (only with ATM, Community Resource pack, CrossFeedEnabler, HyperEdit, RF, SloverEngines, ModuleRCSFX, RFStockalike, and RealPlume+SmokeSkreen which is mandatory with stockalike configs)

I have created a minimalistic craft with just a pod, tank, engine, and RCS. Then popped it up to orbit with HyperEdit. The engine's fuel status quickly falls back to "Unstable" in literally a second, and manages to stay there for a quite a long time (about 30sec, didn't check exactly) before I decided to do the next test. Then when I fired the RCS to thrust forwards, it took much longer than it should (about 13 seconds) until the fuel flow budged from Unstable status and after that quickly switched through the states within half a second to reach Very Stable.

I tried thrusting reverse with RCS while the state showed Very Stable, then the state went back to Unstable and never seemed to move from there while I was thrusting. Note that it never reached Very Unstable.

Letting the craft float without any thrust while the state showed Very Stable brings the state into Very Unstable given a pretty long wait (felt like a reasonable time for this). Thrusting forwards with RCS after this resulted in a expected behavior of fuel flow state quickly switching back into Very Stable within half a second.

I have tested again to see how long this initial Unstable state lasts, and surprisingly it lasted for longer than 2min where I gave up, not going into Very Unstable.

Intriguingly this time forward RCS thrust brought the state back to Very Stable quite fast, then when I released the thrust it quickly returned to Unstable again in a blink of an eye. Next forward thrust made the Very Stable state stay as it should.

I have then tried to test when this returning to unstable thing happens, and have got the results that a short backwards thrust of about less than 3 seconds doesn't cause the issue of returning to Unstable when you do a short forward burst, and a backwards thrust of about 5 or more seconds causes it. I was also able to escape the bug if I thrusted forwards -in one go- for longer than I have done backwards at the start.

I have tested this a few times and confirmed these below happens all the time.

• Super long Unstable fuel state initially after hyperedit
  
• Reverse thrust RCS = Fuel flow Unstable
  
• Backwards thrust for sufficient time causes a bug where fuel state rolls back to Unstable every time you stop thrusting forwards
  

Please note that it is fuel flow "Unstable" and not "Very Unstable".

I took a copy of the output log and took a peek in there but I found no line that suggests anything happening. It just has a few lines saying RCS lock/unlock which I performed...

It might have been that the phenomenon (much longer than expected thrust needed to achieve Very Stable state) has been exaggerated in larger crafts, due to diminished TWR of RCS thrust, thus seeming like the state never changed despite the thrust provided. No proof or anything here.

If there's anywhere other than the output log I could look into to find an even more detailed debug log, please tell me and I will take a look.

If you need the output log file of the final and second to final test, I will leave it here although I don't think there's anything worthwhile in there.

Second to final: https://kie.nu/2L_z

Final: https://kie.nu/2L_N

Edited October 14, 2015 by ebigunso

[StoryMusgrave]

@ebigunso: So seems like ullage is working correctly. Am I right? Because before it seemed it didn't work at all for you. Never moving into any sort of stable state. Now it is.

[ebigunso]

@ebigunso: So seems like ullage is working correctly. Am I right? Because before it seemed it didn't work at all for you. Never moving into any sort of stable state. Now it is.

Yes... but still there's something obviously broken here, and it looks related to my original problem so I'd like to continue this investigation.

[NathanKell]

ebigunso: Thanks for digging! When I get slightly less buried in 1.0.5 I'll try to take a look as well, and go over your report in more detail.

[dimovski]

Not being all that keen on downloading a big mod like this... And more importantly, installing it, I've got a quick question which you hopefully might be able to answer!

Using the "default" fuel tank, what would be the dry and wet tank density of a 2.5 LOX/RP mixture, for LH2 only and LOX only?

An answer would be greatly appreciated!

[NathanKell]

3% structural fraction for kerolox at OF 2.5:1. 22.3% structural for LH2 only (you'd use a ballooncryo tank instead, not Default, for this reason ). 2.76% for LOX only.

You didn't ask, but 6.4% for OF 5.5:1 hydrolox.

[Starwaster]

Yes... but still there's something obviously broken here, and it looks related to my original problem so I'd like to continue this investigation.

ebigunso: Thanks for digging! When I get slightly less buried in 1.0.5 I'll try to take a look as well, and go over your report in more detail.

I'm not real familiar with the ullage sim data structure and how all of its elements factor in but I think the problem is in the data stored for the specific ship he first had issue with. Either that or his ship was in a bad way that he maybe didn't know how to recover from.