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Post by Enderminion on Apr 12, 2017 10:44:42 GMT
Anyone want to ask me to try and build something? I may or may not get around to doing that request, sorry if I skip you. No really small missiles plz. If you ask anyone else, thats fine too.
LIST OF THINGS
1. 3km/s 3kg, 13cm EM guns; done; someusername6 did it better
2. 5MN RP-1 engine; other people did it
3. 100Mw Decane MPD
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Post by dwwolf on Apr 12, 2017 13:08:23 GMT
An efficient rail or coil gun to propel 3 kg mass with a diameter of about 13cm.
I can get to about 2.6 to 2.8 km/s with conventional cannons with graphene barrels and octanitrocubane propellant.
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Post by Enderminion on Apr 12, 2017 13:19:11 GMT
what do you mean by efficient?
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Post by Enderminion on Apr 12, 2017 13:26:30 GMT
An efficient rail or coil gun to propel 3 kg mass with a diameter of about 13cm. I can get to about 2.6 to 2.8 km/s with conventional cannons with graphene barrels and octanitrocubane propellant. I've got a railgun to do it, but its huge and only 1/2% efficent  I'll try other rail/coil weapons when I get home, I was kind of rushed for time |
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Post by dwwolf on Apr 12, 2017 16:36:18 GMT
1 GW !
Well the projectile is faster.....
Suddenly im thinking my HV cannon version that only turns a few degrees per second is alot more reasonable.
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Post by mrsandman on Apr 12, 2017 16:47:18 GMT
Can you make an RP-1 engine that has about 5 MN of thrust? I've yet to have any real luck making a good one.
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Post by Enderminion on Apr 12, 2017 16:52:31 GMT
Can you make an RP-1 engine that has about 5 MN of thrust? I've yet to have any real luck making a good one. you're on the list |
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Post by mrsandman on Apr 12, 2017 16:54:43 GMT
Can you make an RP-1 engine that has about 5 MN of thrust? I've yet to have any real luck making a good one. you're on the list Thx |
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Post by Zerraspace on Apr 12, 2017 16:57:46 GMT
No need to ask - RP-1 is similar enough to decane that all I had to do was tweak one of my current thrusters. You can fine tune it a little more or increase the gimbal; if this is for a crewed ship, add some centimeters of shielding:  NuclearThermalRocketModule 5.26 km/s RP-1 Gimballed Nuclear Thermal Rocket
UsesCustomName false
ReactorCoreHeight_m 0.075
NuclearReactor
Coolant RP-1
Moderator Graphite
ModeratorMass_kg 0
Fuel U-235 Dioxide
FuelMass_kg 16
FuelEnrichment_Percent 0.97
ControlRodComposition Boron Nitride
ControlRodMass_kg 15
NeutronReflector Amorphous Carbon
ReflectorThickness_m 0
AverageNeutronFlux__m2_s 1e+020
ThermalRocket
ChamberComposition Diamond
ThroatRadius_m 0.1
ChamberWallThickness_m 0.0035
ChamberContractionRatio 5
NozzleExpansionRatio 50
NozzleExpansionAngle_degrees 10
RegenerativeCooling_Percent 0
Injector
Composition UHMWPE
PumpRadius_m 0.35
RotationalSpeed_RPM 400
Gimbal
InnerRadius_m 0.5
ArmorComposition Diamond
ArmorThickness_m 0.01
MomentumWheels
Composition Boron
RotationalSpeed_RPM 35000
GimbalAngle_degrees 5 |
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Post by Rocket Witch on Apr 12, 2017 17:48:11 GMT
Can you make an RP-1 engine that has about 5 MN of thrust? I've yet to have any real luck making a good one. My standard issue Super Soaker, or close to (I normally use vitreous carbon injectors but that's not stock). I can't export it for whatever reason. Gimbal range is set to 9.99 so ships won't roll and go out of control during turns. |
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Post by Enderminion on Apr 12, 2017 19:38:08 GMT
An efficient rail or coil gun to propel 3 kg mass with a diameter of about 13cm. I can get to about 2.6 to 2.8 km/s with conventional cannons with graphene barrels and octanitrocubane propellant. I tried Coilguns but failed to get above 2km/s, a new railgun however hits 15%  only 3.5 K-tons |
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Post by dwwolf on Apr 12, 2017 19:58:00 GMT
Lmfao.
Nope, heavy projectiles = cannon apparently.
Nice try though.
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Post by mrsandman on Apr 12, 2017 20:10:35 GMT
Lmfao. Nope, heavy projectiles = cannon apparently. Nice try though. New railguns just can't sling heavy slugs too well. |
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blkcandy
Junior Member
Burn complete. Crawling back to bed.
Posts: 78 
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Post by blkcandy on Apr 12, 2017 23:41:37 GMT
Can I have an efficient 100MW Decane MPD? I can make NTR and Resistojets, but making an efficient MPD at a desired power level is beyond me.
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Post by someusername6 on Apr 13, 2017 0:28:58 GMT
Lmfao. Nope, heavy projectiles = cannon apparently. Nice try though. You can do a bit better using Hafnia, but it seems difficult to be much more efficient than 20% without breaking the materials or the bank. Which usually means a poor rate of fire. I think you are better off firing many small projectiles fast, so at least one will hit, but I'd love to be proven wrong.  RailgunModule 500 MW 130mm Capacitor Railgun
UsesCustomName false
PowerConsumption_W 5e+008
Capacitor
Count 1
DielectricComposition Hafnia
Dimensions_m 1.5 0.48
Separation_m 5.8e-006
Rails
Composition Osmium
Thickness_m 0.41
Length_m 2.7
BarrelArmorThickness_m 0.746
Armature
Composition Zirconium Copper
BoreRadius_m 0.065
Mass_kg 3
Tracer Copper
Payload null
Loader
PowerConsumption_W 1e+008
TargetsShips true
TargetsShots false
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