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CB 1620 Michigan by Ergrassa CB 1620 Michigan by Ergrassa
type: heavy cruiser
manufacturer: Manhattan Shipyards
in service: 2509-present
country of origin: Liberty
used by: Liberty, Sol Republic
units built: 12
unit cost: about 1.8 bil. Geo

length: 668 meters
diameter: 137 meters
width: 270 meters
weight: 241000 tonnes
crew: 206 (inc. 56 officers)
armor: 7500/4000/1000
energy shield: 28 × 24 MJ/sec (0.67 GW total)
armament (energy): 12 × 200 MWt lasers (2s pulse); 12 × dual 40 MWt lasers (1s pulse)
armament (kinetic): none
armament (guided): 4 × 3000mm torpedo tubes; 24 Gargoyle torpedoes total
armament (unguided): none

propulsion: 1 × General Technics J20D (8.2G full thrust; 2.7G one third)
interstellar drive: Hyperdrive Mk.2
interplanetary drive: Warp drive Mk.1

ships in series, Liberty Navy: CBC Michigan, CBC Detroit, CB Grand Rapids, CB Warren, CB Flint (destroyed, 15 dead), CB Ann Harbor, CB Dirborn, CB Clinton, CB Baraga (destroyed, 206 dead), CB Delta, CB Emmeth

ships in series, Sol Republic Navy: Flagship LBSF Geneve (upgraded armor, four frontal lasers replaced with axial mount particle projectors; 955 meters total length)
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:iconcoalition:
Coalition Featured By Owner Jan 26, 2015
For a 200 MW laser firing over 2 seconds, that is a total of 400 MJ.  TNT has a capacity of 4.6 MJ/kilogram, so each of the large lasers is the equivalent of 87 kilos of TNT per shot (don't know what the recharge time is per shot).

When  you say MJ/sec, that is really MW.  So are you saying that the energy shields can handle up to 24 MW per shield, effectively subtracting that amount of damage?  If an attacker provided 23 MW to a single shield for a long duration, would there be an eventual shield failure?

I am trying to figure out if there is a total shield capacity (measured in GJ), or if the energy shield listed above merely subtracts from incoming damage before it starts to boil off the armor (don't know what the armor values mean, thickness, total energy needed to boil off, or?).  If so, then you might phrase it as total shield capacity of 150 GJ (enough to take 1 minute of continuous fire from itself from all 12 main lasers), with 28 shield regenerators each rated at 24 MW.

Now the engine is impressive.  Assuming a protium fusion engine (Hydrogen to Helium), that gives a maximum specific impulse of 30 million m/s.  With a 241 kiloton ship, accelerating the ship at only 1G will need an engine capable of handling 35,000 TeraWatts (or about one fifth the total solar energy hitting Earth every day).  This ship can do just over 8 Gs, needing a 280,000 TW engine (assuming no mass-lightening technology is used).  Better make sure the ship's rear isn't pointing at anything valuable when you turn that engine on.
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:iconludo38:
Ludo38 Featured By Owner Feb 5, 2014  Professional General Artist
Waow, perfect work...
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:iconimperator-zor:
Imperator-Zor Featured By Owner Nov 11, 2011
An excellent spacecraft design! Feel free to feel proud!
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:iconakos2:
akos2 Featured By Owner Nov 3, 2011  Hobbyist Writer
From what range space fights happen in your setting?Because I see kinetic
weaponry and missiles on a lot of your ships and theseare quite short ranged(or missiles have jump drives?) while laser can be effective to about 1-1,5 light seconds. Can ships jumpas close to eachother as they want to? And if they can, why space battles exist? Couldn't the weaker fleet simply jump away then?
Otherwise congrats for your works they are damn cool and the most realistic ones I've ever seen. Is there any english material on this setting?
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:iconpixel-pencil:
Pixel-pencil Featured By Owner Oct 24, 2011  Student General Artist
MICHIGAN!
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:iconshadowhyperreal:
ShadowHyperreal Featured By Owner Oct 23, 2011
Exquisite work. I congratulate you, this is some of the best speculative hard science fiction work I've ever seen.
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:iconcorias:
Corias Featured By Owner Oct 18, 2011
Это какой-то ранний форк "Пскова" или популярный в начале 25 века дизайн?
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:iconergrassa:
Ergrassa Featured By Owner Oct 19, 2011  Hobbyist Digital Artist
не, просто популярный с 22го века (исключая 24й) дизайн =)

кстати, на эйорских боевых кораблях генератор ИГ или также вращающийся модуль?
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:iconcorias:
Corias Featured By Owner Oct 19, 2011
Генератор, к тому же с дублированием. В одном блоке с компенсатором. Собственно, оттуда и размеры кораблей несколько больше.
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:iconscreenscan:
screenscan Featured By Owner Oct 18, 2011   Interface Designer
this is awesome
and so realistic looking
man
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:iconfrazamm:
frazamm Featured By Owner Oct 18, 2011
What type of gravity do they have aboard?
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:iconergrassa:
Ergrassa Featured By Owner Oct 18, 2011  Hobbyist Digital Artist
Rotating-wheel, 68-meters radius, 2 to 3 revolutions per minute what equals 0.3 to 0.7 «standard gees» of artificial gravity.
Reply
:iconfrazamm:
frazamm Featured By Owner Oct 18, 2011
Thanks, nice to know. You do know you have some of the best designs for spacecraft on this site?

What universe are these part of?
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:iconergrassa:
Ergrassa Featured By Owner Oct 18, 2011  Hobbyist Digital Artist
Thanks =)

This is a part of (be)live universe — science fiction, alternate history and future prognostics pen-and-paper RPG. [link]in russian
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:iconpyrotactick:
Pyrotactick Featured By Owner Oct 17, 2011
Pilot: "They're flanking us!"
Michael Bay general: "This'll do do juust fine..." *Readies inter-stellar space nukes*
Pilot: "Sir, your unreasonable. We could just send over a couple missiles-"
General: "Your right..." *Launches all missiles* "consider those a couple missiles, as well as a welcoming party."
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:iconforged-in-steel:
Forged-in-Steel Featured By Owner Oct 17, 2011  Professional Digital Artist
Thing about the Manhattan Ship Yards, they tend to overcharge on production ;)
Next time use the Utopia Planitia Yards :nod:
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:iconjazzlizard:
JazzLizard Featured By Owner Oct 17, 2011  Professional Digital Artist
I love this design, very realistic and believable!
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:iconkerynean:
Kerynean Featured By Owner Oct 17, 2011  Hobbyist Digital Artist
Can I ask what 3D program you used to create this if you don't mind?
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:iconergrassa:
Ergrassa Featured By Owner Oct 18, 2011  Hobbyist Digital Artist
3Ds Max 2009
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:iconkerynean:
Kerynean Featured By Owner Oct 18, 2011  Hobbyist Digital Artist
Thank you for answering ^^
Reply
:iconmedrazerblade:
medrazerblade Featured By Owner Oct 17, 2011  Hobbyist Traditional Artist
WOAH Nice one!!
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:icon1wyrmshadow1:
1Wyrmshadow1 Featured By Owner Oct 17, 2011
I have a small question. Do you have a place where your solar nations flags are, but larger?
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:iconergrassa:
Ergrassa Featured By Owner Oct 18, 2011  Hobbyist Digital Artist
[link] ← here they are
If you plan to use them somewhere, except real flags, please notify me =)
Reply
:icon1wyrmshadow1:
1Wyrmshadow1 Featured By Owner Oct 18, 2011
Thank you, I was just interested in seeing larger versions of your space nations.
Reply
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