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  1. #61
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    Granted. It would be difficult to create rail guns that fire at those velocities. So, let's do some more calculations:

    3% light speed (about 9,000,000 meters/sec) would decrease our overall kinetic energy to 4,131,000,000,000,000 joules, or 4.131 X 10^15. Which equals 4,131 terajoules, or 4.131 petajoules. For comparision, 4.184 × 10^15 joules (or 4.184 petajoules) equals 1 megaton, or 1,000,000 metric tons of TNT. Using the same five shots per second firing rate, the Abydos can deploy ten megatons a second against enemy targets-Still very effective against Al'kesh and other small threat vessels, such as Wraith cruisers. And far more practical weaponry for a ship this size. Naquada-enhanced shells would, for a given amount of naquada, make these rail guns extremely effective against enemy capital ships. However, we do not know exactly how much. What do you think?

  2. #62
    First Lieutenant
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    Default Re: New Ship Thread

    Yes, and even 2% c are stretching it, remember the current rails guns are only mach 5, 2%c is a LONG away from that.
    Plus, you have the problem that you need to accelerate the projectile first, which costs at same amount of energy it will release on impact in space. In your example 5.1 X 10^17 joules, plus you get a recoil effect from the impulse of the sheel fired.
    Lets see, your shell is 102kg heavy, and your ship weigths 14597000kg, that is
    143107.8 times heavier.
    Next we need to figure out how fast the projectile needs to be accelerated.
    For that we need to reeach 20%c in about 20m length (gun length). That gives us a timeframe for the acceleration phase of about 0.000000333 seconds. That gives about 18000000000000g acceleration for the projectile.
    Now our ship is much heavyer as seen above, so the recoil that propels the ship away from the projectil is then: 125779307g .....

  3. #63
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    Unless you include anti-gravity field generation, which (as we have seen) cancels out inertia and therefore, recoil. Anti-grav boosts to rail guns would not have to lower the KE of the projectile-But merely provide a "bubble" of anti-grav that pushes the shell along, not compromising it's KE, but rather the KE and inertia of the space behind it.

  4. #64
    Lieutenant Colonel aAnubiSs's Avatar
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    Default Re: New Ship Thread

    Using a railgun for an E17 energy release isn't that good. Railguns aren't that efficient, around 33% IIRC. A Coil gun however is 90%+ under the right conditions.

    Artificial Gravity, Inertial Dampeners and Mass Lightening...

    It's interesting to know if it lowers the internal mass. However I can't really see a reason why would do that, nor can I see any possible way how since I doubt one could lower individual particles mass. And if you could you'd need more particles for the same thrust. Also wouldn't it frell the ship up it they had several mass lightening devices on the ship so that some sections have a lower mass than others. Would be interesting to see how this would function when you pull 90 degree turns at 60 PSL. Would totally tear the ship apart I'd guess.
    Last edited by aAnubiSs; March 5th, 2006 at 02:52 PM.

  5. #65
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    So, why not use coilguns instead? Or Guass rifles.

    Essentially, my ship is for use against vessels in it's weight range one-on-one.

  6. #66
    Lieutenant Colonel aAnubiSs's Avatar
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    Default Re: New Ship Thread

    Quote Originally Posted by Andrew Joshua Talon
    So, why not use coilguns instead? Or Guass rifles.

    Essentially, my ship is for use against vessels in it's weight range one-on-one.
    A gauss gun is a coil gun Two different names for the same thing

  7. #67
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    Ah. I see.

    In that case, coilguns should replace railguns as anti-ship gunnery aboard Tau'ri starships. Our current rail guns demonstrate effectiveness against fighters and smaller vessels, and are sufficient for those roles. Missiles, however, will continue to be our primary anti-ship munitions. Preferably with inertial-dampening technology to make them harder to intercept.

  8. #68
    Lieutenant Colonel freyr's mother's Avatar
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    Default Re: New Ship Thread

    They should also make the casing of the missile stronger so darts can't take it out by commiting suicide. It would just plow through the darts till it reached the hive and then boom.

    Best Stargate quote:
    Sheppard: (yells to McKay) Canadian football is a joke! Celine Dion is overrated! Zelenka is smarter than you are!
    Green is your friend.

  9. #69
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    Or, use rail guns to deliver naquada-enhanced warheads of some kind. Even a tiny amount of the stuff can create a huge explosion (as seen in "Singularity"). Perhaps the rail gun velocities do not need to reach significant fractions of the speed of light, but just fast enough to deliver the payload without being shot down.

  10. #70
    First Lieutenant deadman's Avatar
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    Default Re: New Ship Thread

    Or they could use pure naquada slug for the rail guns filled with and explosive of some kind to start the explosive reaction.

  11. #71
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    Trouble is, we don't know how destructive it would be. Aybody know how big a boom of 102 kilograms of naquada would cause?

  12. #72
    First Lieutenant
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    Default Re: New Ship Thread

    We can estimate,
    We know that a naquada enhanced themonuclear device gets a powerincrease of 100.
    This is still in the e=mc^2 possibile realm, which would limited a explosion to be about 240 times that of a fusion nuke.
    So, we can estimate that naquada has a energy potential of (e=mc^2)/2.4

    Which is very impressive.

  13. #73
    Second Lieutenant Milleniumlance's Avatar
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    Default Re: New Ship Thread

    my head hurts

  14. #74
    Lieutenant Colonel Ouroboros's Avatar
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    Default Re: New Ship Thread

    These threads are always a fun diversion.

    Ok I've done a Carrier and a cruiser before so lets try something new.

    Submarine/Stealth ship/I'll let McKay name it since he always gets screwed


    Dimensions

    The ship will be as big as the weapon fits and reactors require it to be in order to function to proper effect. An effort to keep size down will be made however because it's probaly going to be easier to cloak something smaller. Also smaller ships means we can build more of them and this is the sort of ship that's going to become exponentially worse for our enemies in larger numbers

    Hull considerations

    The hull in general will be built with whatever sensor fooling materials we have available. The shape will also be designed to present a minimal sensor aspect when the ship is on attack approach. In the event that the cloak fails or can be partially seen through these things will help as a secondary line of defence. Armour will be minimal. If the ship gets detected it will flee using the superior Asguard derived FTL drive technology Earth currently holds over its enemies.

    The shape will be determined by men much smarter than I am with the above and following considerations and limitations in mind.

    Armaments

    The ships primary anti ship armament is going to be a series of perhaps half a dozen to a dozen large bore axial mounted railguns firing naquada enhanced nuclear bombs into it's forward arc.

    The ship will also carry (if size permits) a series of silos loaded with long range FTL capable missiles packing extremely high yeild naquada or biological warheads. These are intended not for anti ship use but as weapons of mass destruction to be employed against enemy planetary assets.

    Additional features

    The most important feature of the entire ship will be its cloaking device. The entire ship will be essentially designed around optimizing it's form to be more efficiently cloaked. It will also be equiped with passive stealth technolgies of whatever level of effectivness the various brains at Area 51 can come up with.

    A single, or small number of, FTL capable scout craft to spot targets and extend awareness at longer ranges will also be included if space allows. Ideally these ships will also have a cloak.

    Methods of Engagement

    The intent of these ships in a ship-to-ship context is to approach under cloak on an enemy ship and lay as devestating an alpha strike as possible on it with their axial railguns, preferably when they're laying unexpecting with shields and defences powered down. Ideally several salvos will be loosed into an enemy formation by a pack of subs hunting together before the hostiles can even react. Each railgun will be capable of independant targeting in a limited arc making it possible to hit several targets, or several key parts of a large target, with the single initial strike provided they are grouped closely enough together.

    The ship will remain cloaked at all times while in combat and will manuver evasively at sufficient range to reduce the chances of a blindly firing enemy scoring hits to near zero.

    The second method in which the sub can be used is as a tool of mass destruction. In this context it will use it's speed and stealth advantage to penetrate deep into enemy held territory and harrass supply lines/factories and launch it's strategic missiles against whatever planet bound, or large stationary space bound, targets are in range. The missiles should carry warheads roughly on par with those in the Mark 9 gatebuster, sufficient to cause irreversible damage to the biosphere of any planet on which the explode, rendering said world useless. The drives can be cheap and with limited fuel since neither great range nor endurance are required.

    As a side effect the ship will also make an excellent spy/intelligence gatherer.

    In either role the sub/stealthship/whatever mcKay names it will serve as a weapon of terror to intimidate and demoralize the enemies of Earth. It attacks suddenly and from nowhere, from great distances or from inside the imagined safety of your own backyard. It can not be seen by any conventionally known means and thus it can not be stopped.
    Last edited by Ouroboros; March 5th, 2006 at 09:55 PM.

  15. #75
    Lieutenant Colonel WraithWarrior's Avatar
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    Arrow2 Re: New Ship Thread

    Quote Originally Posted by Milleniumlance
    my head hurts
    Yeah, I know how you feel, I think mines gonna explode

  16. #76
    Probie
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    Default Re: New Ship Thread

    The SS-100 "Rome" Space Station

    The station would be Earth's diplomatic front and have a Stargate. Instead of an iris, the gate room would have a Tokra one-way sheild so that alien diplomats could be seen face-to-face, but threats could be be safley eliminated.

    The station would also serve as an Earth outpost. Earth ships could be repaired and built. Also, 10 SG teams would operate out of Rome.

    The station would be built in 2010 and be powered by the ZPM recently discovered by the Atlantis expedition. Rome would have a shield much like the one in Atlantis, but would only be activated is the station was under attack due to power consumption.

    Defenses:
    2 F-302 Squadrons
    10 Puddle Jumpers
    Rail Guns
    Ancient Shield
    A BC-303 (Endeavor)

    Dimensions:
    Shape = +
    Each pier has four decks and is 1/4 km. long.
    The Center tower goes up and down 20 levels from the center.
    The tower is 100 ft by 100 ft.

    Rome would be operated by a crew of 200 and orbit the Alpha site.
    Last edited by Brainsforsale; March 6th, 2006 at 07:47 AM.
    http://e.1asphost.com/BEUD/p90.jpg
    The P90, the backbone of the Tuari.

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  17. #77
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    And now, for something completely different:

    Gladius-class Cruiser

    ~Type: Advanced small hyperspace capable warship
    ~Technology Base: Tollan/Asgard
    ~Dimensions:
    Length - 89 meters
    Beam - 36 meters
    Draft - 18 meters
    ~Crew: Can be run entirely by computer in planetary-defense role; In manned role only requires two personnel to run. Maximum capacity: 50
    ~Powerplant: Tollan energy generator
    ~Engines:
    Inertialess Drive
    Asgard Hyperdrive
    ~Weapons:
    2 x Tollan Ion Cannons
    1 x Phase Bomb Launcher
    ~Defenses:
    Tollan Phase Device
    Asgard Shields
    ~Other Technology:
    Tollan/Asgard sensors
    Goa'uld Rings

    Technical and Historical Notes

    To the best of the SGC's knowledge, the Tollan were wiped out by Anubis in the year 2002 after they failed to honor their agreement to build the Gou'ald advanced weapons for use against the galaxy. However, later information would reveal that the Tollan had indeed survived the assault on their world, in one of the most elaborate deceptions ever conceived by humans.

    Tanith would later report to his master, Anubis, that their assault on Tollana had left no survivors, but Narim, as the acting head of the Tollan Nation, had secretly phase-shifted the majority of the population into deep, underground bunkers the Tollan had discovered abandoned on Tollana when they first settled there. The bunkers had been used by some long-dead race, apparently to hide from invaders, and was shielded with high concentrations of lead and other sensor-obscuring minerals. The long-dead race, however, had apparently died because of the lead that protected them, but the Tollan were able to prevent this for their own people while hiding from the Gou'ald.

    Narim's final transmissions to the SGC were a nessecary ruse while the Tollan sent up many of their ships on autopilot and had what amounted to a "skeleton population" fighting and dying on the surface. Narim and the last of the defenders appeared to die when the Goa'uld's final blow struck, but they too had descended into the bunkers, before leaving through a secondary Stargate, and remaining hidden for over four years while their world was occupied and ransacked by the Gou'ald.

    In this time, on New Tollana, the Tollan began to rebuild their society, hidden from everyone (even their allies, the Tau'ri) until they could mount an effective defense and offense against the Gou'ald, unaware in their isolation that SG-1 had succeeded in defeating them. Finally, in 2006, the Tollan made contact with the Tau'ri once more and renewed their alliance-This time, offering help in enhancing the technology the SGC already had and offering military support, rather than simply smugly telling the Tau'ri they were too primitive for such help.

    The Gladius-class cruiser, resembling the sword used by the Romans from whom the Tollan are descended, utilizes the most advanced Tollan technology. While very small ships, the Gladius are able to engage and defeat vessels many times their size. Able to phase-shift through an enemy vessel's shields and hull, the Gladius can deploy a single high-yield bomb and phase shift again to escape destruction. With it's twin, second-generation Tollan ion cannons, the Gladius can destroy late-model Goa'uld motherships with several shots, and easily escape destruction with either it's phase-shift technology or Asgard shields.

    The ships can be set to run completely automated, and several in this mode form New Tollana's first line of defense. However, a number of these ships, manned by a full crew, have been assisting the Tau'ri and the Free Jaffa Nation against the Ori, giving the allies a badly needed boost against the onslaught of these extra-galactic invaders.
    Last edited by Andrew Joshua Talon; March 6th, 2006 at 10:39 AM.

  18. #78
    First Lieutenant
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    Default Re: New Ship Thread

    That gladius i like, it is sensible and presented with a actuall working backstory as well. have some greeny

  19. #79
    Captain Andrew Joshua Talon's Avatar
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    Default Re: New Ship Thread

    Thank you.

    Alas, it looks like our ships are going to be limited to rail guns for defensive purposes, and missiles for offensive purposes (at least against capital ships). Still, using Asgard beaming technology, or intertial dampeners, can make our missiles much harder to be intercepted. Plus, they are effective against enemy ships. The rush to switch to energy weapons (that we'd need several years to develop and deploy reliably on our own) is unnessecary, when what we've got works just fine and can be further enhanced very easily.

    Naturally, I wouldn't mind our ships getting Tollan Ion cannons and being able to use Ancient drones, but it's very impractical. The Tollans, with the Gladius here, would still be rather reluctant to give us advanced technology, but are at least willing to help us in war. And just so you know, "gladius" was actuallya generic Latin term for swords in general, like the term "guns" for firearms and other projectile weapons we use.

  20. #80
    Captain Steve_the_Wraith's Avatar
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    Default Re: New Ship Thread

    Anyone ever read "Night's Dawn"
    bascially I'd like to see a void hawk

    A living starship (grown not manufactued), telepathically bonded to it's captain and using a gravity distortion drive (which besides allowing it to move very fast and very manouverably at Sub light, allows it to open wormholes [but with a limted range of how much space the wormhole can bridge])


    As a possible backstory how about the ship was a reverse engineered wraith cruiser/hive that Lantian scientists modified (hiding it from even Atlantis) only to be discovered at some point by the SG:A team
    http://img92.imageshack.us/img92/3609/atlantis2os2.jpg

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