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Post by someusername6 on Feb 25, 2017 7:20:08 GMT
I went straight to a 10 MW reactor. It's quite a lot better now that I can use sodium coolant instead of oxygen. Proportionally, it's 25% heavier and 50% cheaper than yours, someusername6 . ThermoelectricFissionReactorModule Lunar 10.1 MW Reactor UsesCustomName true ReactorCoreDimensions_m 0.036 0.106 NuclearReactor Coolant Sodium Moderator Silicon Dioxide ModeratorMass_kg 0 Fuel U-233 Dioxide FuelMass_kg 2 FuelEnrichment_Percent 0.97 ControlRodComposition U-233 Dioxide ControlRodMass_kg 2.7 NeutronReflector Silicon Dioxide ReflectorThickness_m 0 AverageNeutronFlux__m2_s 1.41e+020 InnerTurbopump Composition Fused Quartz PumpRadius_m 1.36 RotationalSpeed_RPM 57 ThermocoupleInnerDimensions_m 8.5 30 Thermocouple PTypeComposition Depleted Uranium Dioxide NTypeComposition Iron Length_m 0.001 ThermocoupleExitTemperature_K 1750 OuterCoolant Sodium OuterTurbopump Composition Calcium PumpRadius_m 1.36 RotationalSpeed_RPM 57
I'm planning to use it with a 100 MW MPD. Not sure what propellant yet, because hydrogen is a pain to contain with the materials available. And then I'll need a weapon... probably railgun. Very nice. Probably need to change the inner turbopump blade from fused quartz; aluminium oxide is almost as good here.
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Post by samchiu2000 on Feb 25, 2017 7:23:08 GMT
I went straight to a 10 MW reactor. It's quite a lot better now that I can use sodium coolant instead of oxygen. Proportionally, it's 25% heavier and 50% cheaper than yours, someusername6 . ThermoelectricFissionReactorModule Lunar 10.1 MW Reactor UsesCustomName true ReactorCoreDimensions_m 0.036 0.106 NuclearReactor Coolant Sodium Moderator Silicon Dioxide ModeratorMass_kg 0 Fuel U-233 Dioxide FuelMass_kg 2 FuelEnrichment_Percent 0.97 ControlRodComposition U-233 Dioxide ControlRodMass_kg 2.7 NeutronReflector Silicon Dioxide ReflectorThickness_m 0 AverageNeutronFlux__m2_s 1.41e+020 InnerTurbopump Composition Fused Quartz PumpRadius_m 1.36 RotationalSpeed_RPM 57 ThermocoupleInnerDimensions_m 8.5 30 Thermocouple PTypeComposition Depleted Uranium Dioxide NTypeComposition Iron Length_m 0.001 ThermocoupleExitTemperature_K 1750 OuterCoolant Sodium OuterTurbopump Composition Calcium PumpRadius_m 1.36 RotationalSpeed_RPM 57
I'm planning to use it with a 100 MW MPD. Not sure what propellant yet, because hydrogen is a pain to contain with the materials available. And then I'll need a weapon... probably railgun. Very nice. Probably need to change the inner turbopump blade from fused quartz; aluminium oxide is almost as good here. Yea and we need to add these compound because they are composed of material listed on the challenge.
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Post by someusername6 on Feb 25, 2017 7:25:01 GMT
Very nice. Probably need to change the inner turbopump blade from fused quartz; aluminium oxide is almost as good here. Yea and we need to add these compound because they are made of material listed on the challenge. Never mind then, great as it was posted.
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Post by apophys on Feb 25, 2017 7:35:00 GMT
Titanium aluminide and silica aerogel are also made entirely of allowed elements.
I'm expecting alpha-2 titanium aluminide to be a fine railgun barrel and armature material.
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Post by samchiu2000 on Feb 25, 2017 7:37:18 GMT
Titanium aluminide and silica aerogel are also made entirely of allowed elements. I'm expecting alpha-2 titanium aluminide to be a fine railgun barrel and armature material. But i doubt if the production of these material require large quality of other element. For example silica aerogel need ethyle to produce. If I issue a titan (saturn 's moon) warship challenge in the future , i may consider adding silica aerogel to it~
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Post by apophys on Feb 25, 2017 8:11:25 GMT
But i doubt if the production of these material require large quality of other element. For example silica aerogel need ethyle to produce. If i issue a titan (saturn 's moon) warship challenge in the future , i may consider adding silica aerogel to it~ Such elements would be recycled so that they aren't consumed. It might limit production capacity, but production is possible indefinitely without importing stuff. Even so, I find that isn't even a necessary argument in this particular case, because you don't need carbon at all to make aerogel. "Waterglass Gelation: A Cheaper Alternative to Alkoxides Silica gels can also be produced through a less expensive method involving an aqueous solution of sodium silicate. Sodium silicate is an inexpensive white solid with a range of possible stoichiometries (which each have different names)—Na2SiO3 or sodium metasilicate, sodium polysilicate or (Na2SiO3)n, sodium orthosilicate Na4SiO4, and others. Sodium silicates are soluble in water, and when dissolved the resulting solution is referred to as waterglass or liquid glass." www.aerogel.org/?p=16You do need some kind of acid, but hydrogen peroxide should be fine.
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Post by someusername6 on Feb 25, 2017 8:41:16 GMT
Here's a slightly more economical submission, beating the mission with cost under 6 Mc. Similar strategy, sodium cooled reactor / better rate of fire, actually looks like a spaceship. ThermoelectricFissionReactorModule Lunar Reactor 3.12 MW Sodium UsesCustomName true ReactorCoreDimensions_m 0.35 0.24 NuclearReactor Coolant Sodium Moderator Depleted Uranium Dioxide ModeratorMass_kg 0 Fuel U-233 Dioxide FuelMass_kg 6.5 FuelEnrichment_Percent 0.97 ControlRodComposition U-233 Dioxide ControlRodMass_kg 0.8 NeutronReflector Depleted Uranium Dioxide ReflectorThickness_m 0 AverageNeutronFlux__m2_s 1.3e+019 InnerTurbopump Composition Titanium PumpRadius_m 0.18 RotationalSpeed_RPM 490 ThermocoupleInnerDimensions_m 3.5 30 Thermocouple PTypeComposition Depleted Uranium Dioxide NTypeComposition Iron Length_m 0.001 ThermocoupleExitTemperature_K 1700 OuterCoolant Sodium OuterTurbopump Composition Aluminum PumpRadius_m 0.32 RotationalSpeed_RPM 490
CrewModule 34 Crew Module Lunar UsesCustomName true CrewCapacity 34 Decks 9 StructureMaterial Calcium ShellThickness_m 0.01
RadiationShieldModule 8.00 m Diameter 1.20m Radiation Shield Lunar UsesCustomName true Composition Aluminum Dimensions_m 4 1.2
RadiatorModule 20x5 Titanium Radiator UsesCustomName false Composition Titanium PanelWidth_m 2 Height_m 5 Thickness_m 0.001 ArmorThickness_m 0.001 Panels 12 SurfaceFinish null
PropellantTankModule 750 t Water Tank Lunar UsesCustomName true Propellant Water StructureComposition Potassium ReactionMass_kg 7.5e+005 HeightToRadiusRatio 20 AdditionalArmorThickness_m 0
NuclearThermalRocketModule 3.65 km/s Lunar NTR UsesCustomName true ReactorCoreHeight_m 0.98 NuclearReactor Coolant Water Moderator Depleted Uranium Dioxide ModeratorMass_kg 5.6 Fuel U-233 Dioxide FuelMass_kg 24.05 FuelEnrichment_Percent 0.95 ControlRodComposition U-233 Dioxide ControlRodMass_kg 8 NeutronReflector Depleted Uranium Dioxide ReflectorThickness_m 0 AverageNeutronFlux__m2_s 9.7e+019 ThermalRocket ChamberComposition Titanium ThroatRadius_m 0.325 ChamberWallThickness_m 0.0021 ChamberContractionRatio 1.95 NozzleExpansionRatio 100 NozzleExpansionAngle_degrees 10.02 RegenerativeCooling_Percent 0.066 Injector Composition Titanium PumpRadius_m 0.208 RotationalSpeed_RPM 880 Gimbal InnerRadius_m 0.86 ArmorComposition Alpha-2 Titanium Aluminide ArmorThickness_m 0.001 MomentumWheels Composition Alpha-2 Titanium Aluminide RotationalSpeed_RPM 13000 GimbalAngle_degrees 10.9
CoilgunModule 3.00 MW Lunar Coilgun UsesCustomName true PowerConsumption_W 3e+006 Coil Composition Calcium WireRadius_m 0.0143 NumberOfTurns 25 NumberOfLayers 1 NumberOfStages 50 BarrelArmorThickness_m 0.01 Armature Composition Iron BoreRadius_m 0.059 Mass_kg 0.001 Tracer Iron Payload null Loader PowerConsumption_W 1200 Turret InnerRadius_m 2.3 ArmorComposition Silica Aerogel ArmorThickness_m 0.1 MomentumWheels Composition Potassium RotationalSpeed_RPM 110 TargetsShips true TargetsShots true
AmmoModule 10000x 117mm Coilgun Round UsesCustomName false SuppliedModule 3.00 MW Lunar Coilgun AmmoBay Capacity 10000 Stacks 100 ArmorComposition Silica Aerogel ArmorThickness_m 0.005
CraftBlueprint Lunar Sodium Modules Lunar Reactor 3.12 MW Sodium 1 -0.75 null 0 34 Crew Module Lunar 1 -0.625 null 0 8.00 m Diameter 1.20m Radiation Shield Lunar 1 -0.64063 null 0 20x5 Titanium Radiator 3 6.2305 Lunar Reactor 3.12 MW Sodium 0 20x5 Titanium Radiator 3 12.516 Lunar Reactor 3.12 MW Sodium 0 6x3 Aluminum Radiator 3 21.231 34 Crew Module Lunar 0.01 6x3 Aluminum Radiator 3 25.566 34 Crew Module Lunar 0.01 750 t Water Tank Lunar 1 -0.5 null 0 3.65 km/s Lunar NTR 1 -0.5 null 0 3.00 MW Lunar Coilgun 1 147.89 null 0 10000x 117mm Coilgun Round 20 147.89 null 0 Armor ArmorLayers Titanium 0.0005 0 0 1 1 Silica Aerogel 0.049 0 0 1 1 Titanium 0.0005 0 0 1 1
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Post by samchiu2000 on Feb 25, 2017 8:47:20 GMT
But i doubt if the production of these material require large quality of other element. For example silica aerogel need ethyle to produce. If i issue a titan (saturn 's moon) warship challenge in the future , i may consider adding silica aerogel to it~ Such elements would be recycled so that they aren't consumed. It might limit production capacity, but production is possible indefinitely without importing stuff. Even so, I find that isn't even a necessary argument in this particular case, because you don't need carbon at all to make aerogel. "Waterglass Gelation: A Cheaper Alternative to Alkoxides Silica gels can also be produced through a less expensive method involving an aqueous solution of sodium silicate. Sodium silicate is an inexpensive white solid with a range of possible stoichiometries (which each have different names)—Na2SiO3 or sodium metasilicate, sodium polysilicate or (Na2SiO3)n, sodium orthosilicate Na4SiO4, and others. Sodium silicates are soluble in water, and when dissolved the resulting solution is referred to as waterglass or liquid glass." www.aerogel.org/?p=16You do need some kind of acid, but hydrogen peroxide should be fine. Alright you win. And i will add it right now. (Actually i really didn't want to keep adding material , but i have to for REALISM!)
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Post by samchiu2000 on Feb 25, 2017 8:52:18 GMT
Here's a slightly more economical submission, beating the mission with cost under 6 Mc. Similar strategy, sodium cooled reactor / better rate of fire, actually looks like a spaceship. ThermoelectricFissionReactorModule Lunar Reactor 3.12 MW Sodium UsesCustomName true ReactorCoreDimensions_m 0.35 0.24 NuclearReactor Coolant Sodium Moderator Depleted Uranium Dioxide ModeratorMass_kg 0 Fuel U-233 Dioxide FuelMass_kg 6.5 FuelEnrichment_Percent 0.97 ControlRodComposition U-233 Dioxide ControlRodMass_kg 0.8 NeutronReflector Depleted Uranium Dioxide ReflectorThickness_m 0 AverageNeutronFlux__m2_s 1.3e+019 InnerTurbopump Composition Titanium PumpRadius_m 0.18 RotationalSpeed_RPM 490 ThermocoupleInnerDimensions_m 3.5 30 Thermocouple PTypeComposition Depleted Uranium Dioxide NTypeComposition Iron Length_m 0.001 ThermocoupleExitTemperature_K 1700 OuterCoolant Sodium OuterTurbopump Composition Aluminum PumpRadius_m 0.32 RotationalSpeed_RPM 490
CrewModule 34 Crew Module Lunar UsesCustomName true CrewCapacity 34 Decks 9 StructureMaterial Calcium ShellThickness_m 0.01
RadiationShieldModule 8.00 m Diameter 1.20m Radiation Shield Lunar UsesCustomName true Composition Aluminum Dimensions_m 4 1.2
RadiatorModule 20x5 Titanium Radiator UsesCustomName false Composition Titanium PanelWidth_m 2 Height_m 5 Thickness_m 0.001 ArmorThickness_m 0.001 Panels 12 SurfaceFinish null
PropellantTankModule 750 t Water Tank Lunar UsesCustomName true Propellant Water StructureComposition Potassium ReactionMass_kg 7.5e+005 HeightToRadiusRatio 20 AdditionalArmorThickness_m 0
NuclearThermalRocketModule 3.65 km/s Lunar NTR UsesCustomName true ReactorCoreHeight_m 0.98 NuclearReactor Coolant Water Moderator Depleted Uranium Dioxide ModeratorMass_kg 5.6 Fuel U-233 Dioxide FuelMass_kg 24.05 FuelEnrichment_Percent 0.95 ControlRodComposition U-233 Dioxide ControlRodMass_kg 8 NeutronReflector Depleted Uranium Dioxide ReflectorThickness_m 0 AverageNeutronFlux__m2_s 9.7e+019 ThermalRocket ChamberComposition Titanium ThroatRadius_m 0.325 ChamberWallThickness_m 0.0021 ChamberContractionRatio 1.95 NozzleExpansionRatio 100 NozzleExpansionAngle_degrees 10.02 RegenerativeCooling_Percent 0.066 Injector Composition Titanium PumpRadius_m 0.208 RotationalSpeed_RPM 880 Gimbal InnerRadius_m 0.86 ArmorComposition Alpha-2 Titanium Aluminide ArmorThickness_m 0.001 MomentumWheels Composition Alpha-2 Titanium Aluminide RotationalSpeed_RPM 13000 GimbalAngle_degrees 10.9
CoilgunModule 3.00 MW Lunar Coilgun UsesCustomName true PowerConsumption_W 3e+006 Coil Composition Calcium WireRadius_m 0.0143 NumberOfTurns 25 NumberOfLayers 1 NumberOfStages 50 BarrelArmorThickness_m 0.01 Armature Composition Iron BoreRadius_m 0.059 Mass_kg 0.001 Tracer Iron Payload null Loader PowerConsumption_W 1200 Turret InnerRadius_m 2.3 ArmorComposition Silica Aerogel ArmorThickness_m 0.1 MomentumWheels Composition Potassium RotationalSpeed_RPM 110 TargetsShips true TargetsShots true
AmmoModule 10000x 117mm Coilgun Round UsesCustomName false SuppliedModule 3.00 MW Lunar Coilgun AmmoBay Capacity 10000 Stacks 100 ArmorComposition Silica Aerogel ArmorThickness_m 0.005
CraftBlueprint Lunar Sodium Modules Lunar Reactor 3.12 MW Sodium 1 -0.75 null 0 34 Crew Module Lunar 1 -0.625 null 0 8.00 m Diameter 1.20m Radiation Shield Lunar 1 -0.64063 null 0 20x5 Titanium Radiator 3 6.2305 Lunar Reactor 3.12 MW Sodium 0 20x5 Titanium Radiator 3 12.516 Lunar Reactor 3.12 MW Sodium 0 6x3 Aluminum Radiator 3 21.231 34 Crew Module Lunar 0.01 6x3 Aluminum Radiator 3 25.566 34 Crew Module Lunar 0.01 750 t Water Tank Lunar 1 -0.5 null 0 3.65 km/s Lunar NTR 1 -0.5 null 0 3.00 MW Lunar Coilgun 1 147.89 null 0 10000x 117mm Coilgun Round 20 147.89 null 0 Armor ArmorLayers Titanium 0.0005 0 0 1 1 Silica Aerogel 0.049 0 0 1 1 Titanium 0.0005 0 0 1 1
Excellent!!! Finally we got a design that can engage in combat! It is exactly what i am looking for!!! BTW it is really impressive when compare to your previous design(maybe because of sodium)...
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Post by someusername6 on Feb 25, 2017 8:56:44 GMT
Excellent!!! Finally we got a design that can engage in combat! It is exactly what i am looking for!!! BTW it is really impressive when compare to your previous design(maybe because of sodium)... I can't claim to be as good at reactor optimization as apophys, but this thread did impress on me how important it is to have a good coolant for the reactor. I also suspect the NTR on my submission can be further improved, if anyone wants to try to bring the cost even lower.
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Post by apophys on Feb 25, 2017 9:05:44 GMT
Alright you win. And i will add it right now. (Actually i really didn't want to keep adding material , but i have to for REALISM!) Do I have to find the production methods of alpha-2 titanium aluminide and gamma titanium aluminide? Also not mentioned in the OP is titanium dioxide, now that I look closely. And sapphire and ruby (forms of aluminum oxide).
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Post by The Astronomer on Feb 25, 2017 9:17:59 GMT
Alright you win. And i will add it right now. (Actually i really didn't want to keep adding material , but i have to for REALISM!) Do I have to find the production methods of alpha-2 titanium aluminide and gamma titanium aluminide? Also not mentioned in the OP is titanium dioxide, now that I look closely. And sapphire and ruby (forms of aluminum oxide). In the front page: You can use anything made from [elements] Then make a spoiler and add every allowed materials inside it.
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Post by apophys on Feb 25, 2017 12:39:54 GMT
helium FOR LASER ARC LAMP GAS ONLY Well, then... Lunar Assault Laser.txt (4.83 KB) Even at this size, the laser is so weak that I had to reduce its engagement range down to 500 km. But yes, it clears the mission.
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Post by samchiu2000 on Feb 25, 2017 13:24:07 GMT
helium FOR LASER ARC LAMP GAS ONLY Well, then... Even at this size, the laser is so weak that I had to reduce its engagement range down to 500 km. But yes, it clears the mission. That is weird ... Nice try though. With the material limit , our lunar laser is even worse than stock design...
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Post by The Astronomer on Feb 25, 2017 13:38:16 GMT
Well, then... Even at this size, the laser is so weak that I had to reduce its engagement range down to 500 km. But yes, it clears the mission. That is weird ... Nice try though. With the material limit , our lunar laser is even worse than stock design... If we are actually restricted to common materials, Earth would just stick to its primitive days.
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