Scaling the Excelsior Filming Model

Discussion in 'Trek Tech' started by Praetor, Aug 18, 2013.

  1. 137th Gebirg

    137th Gebirg Vice Admiral Premium Member

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    If you're not a Washington Redskins fan, you don't know what true disappointment tastes like, young man! :D :scream: :brickwall: :wah:
     
  2. B.J.

    B.J. Rear Admiral Rear Admiral

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    Even though it was a reuse of the model, many details like a bridge module and windows were added to denote a completely different and much bigger size.
     
  3. Workbee

    Workbee Commander Red Shirt

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    Wow, I knew that some changes were made, but I didn't realize it was that extensive. Guess it is valid.
     
  4. Egger

    Egger Lieutenant Red Shirt

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    What it also has in common with the TNG core is the dilithium chamber with its dilithium articulation frame holding the crystal.

    I agree, maybe this could also support that there are now two impulse deflection crystals on the NCC version. The new warp core wouldn't be directly connected to those crystals, but the warp plasma conduits could. There are always (?) two conduits coming out of the core and these could split right behind it with two running up to the crystals and two running to the nacelles.

    Thank you very much!
     
  5. Workbee

    Workbee Commander Red Shirt

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    OT, but I came across this picture of the original concept for Excelsior's bridge. Would have loved if they used this design https://sites.google.com/site/spectreblofeld/excelsiorbridgeconcept.jpg

    Though for a one off set, there was almost zero chance of this being realized on the available budget. I think what we ended up with was the best possible compromise.
     
  6. Lord Garth FOI

    Lord Garth FOI Commander Red Shirt

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    Excellsior definitely longer than the galaxy
    Want the smoking gun? Check out the big ass Fed vs. dominion battle in DS9. Haven't watched those episodes in a while and this awesome thread had me nostalgic for the last televised Trek I actually liked (in DS9's case loved)
    Nearly every shot in which an Ex is alongside a galaxy it is longer
    For what it's worth I'd go with the biggest upscaled size and the larger upscaled size of the Connie and Refit as well.
    I know the docking rings tend to poopoo the much larger upscaled size of the refit but they pooched the size of the docking rings on the Enterprise C as well
    Damn I wish I had Cgi skills, love to render a refit with smaller docking rings to see how she would look
    I love this thread
     
  7. Praetor

    Praetor Vice Admiral Admiral

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    As B.J. points out, enough changes were made to the model that it was clearly meant to be a starship. Memory fails at the moment, but I think there were at least six visible window rows. She was probably a ship of fourteen or so decks. I understand your belief though; several sources tend to say that the Jenolan/Nash and the "executive shuttle" were the same thing, but it's just not possible.

    When the Blu-Ray screencaps are available, we'll probably have much more data. For now, I think we'll have to speculate. The color scheme of the graphic would seem to suggest it could have only been used on another movies-era set, which off-hand I think could only point to the Bozeman or Hathaway. To me, it's almost a reinforcement that the TNG-era core in TUC shouldn't just be accepted as a throwaway use of what they had; it seems like the tech team decided that as of 2294, the paradigm had changed. Still quite ambivalent on this point, though. Speaking of the Hathaway...

    Eh, to me it looked like a very clunky version of the TNG core. It had the central hatch and the black boiler type components, as well as two power transfer conduits stretching back horizontally at a bit wider than 45 degrees.

    That said, I see no reason that the core on the Hathaway should have been original to her 2280s construction. I don't feel beholden to it in any way.

    I have always liked the corporate explanations too, but I'm not entirely sure if I can buy the difference between the TMP and TNG style cores being that simple. To me, it suggests a paradigm shift. One of the great things about this whole thread (who knew scaling a damn model could have scope creep like this?) is that it has forced me to really examine how warp drive works, and how I thought it works.

    Agreed, and ditto if I forgot to welcome you, Egger.

    Yep... which may or may not be analagous to The Thing That Killed Spock in TWOK.

    Decent notion. I guess to my thinking, the reason for two deflection crystals would be that one was insufficient to bear the load, maybe prone to overload. If you think about it, one of the Excelsior's impulse engines is larger and probably at least as powerful as both of the Enterprise refit's. If you scale them side by side, it's possible that the one large deflection crystal was just insufficient.

    I've always dug that, myself.

    While some of those shots are a bit dubious, they may bear closer examination. And I may be a bit biased, but I love this thread too. There've been some really great discussions, mostly spurred on by my fellow BBSers. :)

    Ok, time for some pretty pictures. But first, let me talk about my current mindset. As I mentioned upthread, this entire process has made me re-evaluate my notions about how warp drive works, which, frankly is great. I love a challenge.

    A few assumptions/decisions on my part with regards to the evolutionary path here.

    1. The TOS Enterprise had one reactor in each nacelle, and another reactor in the secondary hull someplace. The one in the secondary hull was a smaller "control reactor" used to prime and regulate the other two.
    2. The TMP Enterprise's power shaft/intermix chamber was an outgrowth of the TOS version's secondary hull reactor. Now, greater interconnectivity was at play, and the reactors in the nacelles are still present, but of a much more secondary nature. Ships of the refit tech "family" function much the same way, e.g. Miranda and Constellation.
    3. The primary goal of warp reactor technology is to create warp plasma, which is the magical nectar that makes the whole thing work. Dilithium is the magic mediator that allows the byproduct of annihilation reactions to produce energetic plasma rather than a big, apocalyptic explosion. Rather than capturing energy at the moment of annihilation, this energy is captured within the plasma, and this captured power in turn powers whatever you want it to.
    4. The deflection crystal is used to shunt warp plasma into the impulse engines, probably primarily to "supercharge" or maybe even jump start the primary fusion reactions that power them. This whole assembly generates a heavy mass force that helps move the ship.
    5. In the pre-TNG era, warp reactor ejection was not really a viable safety option. Ships meant for long term voyages were designed to have their engine systems be highly compartmentalized to help ensure saftey in the face of disaster. Ejecting nacelles was the first safety measure, followed by separating a primary hull (if applicable... sorry Mirandas.) Warp reactor and antimatter pod ejection was possible, but was a true last-ditch method that no one really ever put any faith in. Warp reactors/intermix chambers did typically align to service/maintenance hatches, and through some effort could be removed from their starship, but this in and of itself does not constitute a safety maneuver.
    With all that said, I have chosen a rough path for Excelsior with two possible iterations, the TMP flavor and the TNG flavor. Shown here, they are applied to the 467 meter version of the ship. (I'm alternating working on the large and small versions to make sure I finish both.)


    [​IMG]


    [​IMG]


    The yellow hexagon shapes are antimatter pods, which you'll notice are present both above the deflector alcove and in the "humpback." In both versions, the intermix chamber/warp core serves to provide what I'm calling an "initial stage" reaction, with the antimatter pods above the alcove providing primary antimatter for this. As the warp plasma transfers back to the humpback, the plasma manifold draws power for most of the ship's main systems, after which a secondary reaction takes place, which I'm calling the "power stage." Here, more antimatter is injected into the already volatile plasma through a sort of "dilithium distributor," supercharging it for its final transfer into the massive nacelles.

    Unlike previous generations, the Excelsior generation nacelles no longer have reactors, with the supercharging process in the humpback replacing the need for the multiple reactor configuration. With some effort, all the antimatter pods could be ejected, as could the vertical components of the intermix chambers. (Of course in the TNG version, the horizontal chunk is just a PTC.) The humpback reactor isn't really ejectible the way I have it set up now, although the entire nacelle/pylon/humpback assembly could be.

    Regardless which version I pick to be the launch and TUC configuration of the ship, I think the TNG version is probably still viable as the setup that would be used during the 24th century. Maybe the need for the secondary supercharging reaction would be rendered unnecessary, but maybe not... frankly I kind of like the idea of Excelsior having a supercharger. :rommie:

    One thing worthy of note: in the chasm, I've decided the primary use of the grabber and doors above is to launch and retrieve the ships' large executive shuttle (the model that became the Jenolan.)

    I look forward to your thoughts on all this.
     
  8. Egger

    Egger Lieutenant Red Shirt

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    Thanks Praetor!

    Here's my theory of warp drive and the reactor configuration in TOS:

    1. The Constitution class has 3 reactors, one in each nacelle and one of the same type in the engineering hull.
    2. Dilithium (used in the "Dilithium Crystal Converter Assembly) is a highly efficient way of converting massive amounts of energy in the form of radiation into electrical energy.
    3. The "Dilithium Crystal Converter Assembly" is the so-called "main energizer", with auxillary (non-dilithium) energizers for example being used for the impulse reactors.

    As we have seen in Star Trek Enterprise the matter/antimatter reactor can be placed in the hull, so danger from the reactor is no reason to place them outside the hull (in the nacelles).
    I think, as the faster and faster warp drives after Enterprise needed bigger and bigger reactors, there was the choice of one huge reactor in the hull taking away part of the volume of that hull, or multiple reactors. The reason for their placement in the nacelles is for convenience. As I see it, the warp coils need radiation energy, and therefore there is no need for a Dilithium Crystal Converter Assembly in the nacelles. (see NOTES below)
    For the other systems besides the warp coils, there is a small non-dilithium converter assemby fitted to the nacelle that is similar (or even identical) to the ones connected to the Impulse reactors. These can convert only a fraction of the energy coming from the matter/antimatter reaction to electricity, but it is enough to power the systems in the nacelle.
    With this configuration, a nacelle is a complete energy production and warp drive system that only has to be fitted to a starship hull. This hull contains a Dilithium Crystal Converter Assembly (main energizer) which is connected to the reactor in the nacelle and converts as much energy into electricity as is needed to power the other systems of the ship. Also, this energizer diverts some of the warp plasma to the EPS system as a transport medium for the electricity.

    Now you could ask: If the warp engines don't need dilithium, why is the warp drive not working when the crystals aren't working?
    The answer is that a ship needs more than just the engines to use warp drive. Without the deflector(s), the tiniest bit of space dust would blow a hole into the hull.
    So even if the warp engines themselves work, you can't risk going to warp.

    Now on to the reason for a third reactor:

    A ship like the Saladin class for example has one nacelle and only one reactor within it. That means that:

    1. The ship is rather slow because it has only one set of warp coils.
    2. The energy that the one reactor produces must be split between the engine and the rest of the vital systems (especially the deflector(s))
    3. When it uses its warp drive, shields and weapons cannot be operated with full power (if at all).

    So that ship (or, more precisely, a ship that has only nacelle reactors) has no energy left for other systems when it uses its warp drive (at least with high warp factors). That is why the Constitution class (as the best Starfleet has to offer) has an additional reactor. With it, the ship can give every system full power at the same time.

    Now on to TMP:

    As I see it, the Intermix shaft IS the reactor (so from there on: no nacelle reactors anymore). This is a new design which is easy to adjust to the different energy needs for ships of different sizes, since you only need to make the shaft longer for more energy or shorter for less energy. For example, a refit Saladin class would only have a short vertical shaft from the deflection crystal down to the nacelle, and that is enough for that ship class. Bigger ships have longer shafts with the Excelsior having the longest. There still is a Dilithium Crystal Converter Assembly needed for this configuration, as seen in TWOK. By the way, when the main energizer in that movie failed, Scotty then rigged all auxillary energizers to convert enough energy from the intermix shaft to power the ship. This bypass was so unstable (like a chrismas tree) because the auxillary energizers were not disigned to handle that much energy.

    And on to TNG:

    By the time the TNG-style core came into use (whenever that is) the Dilithium Crystal Converter Assembly had been incorporated into the matter/antimatter reactor itself. There, it converts part of the energy into electricity for use in the ships systems. That energy is tapped off from the warp plasma conduits by the main EPS taps and, together with some plasma, is then fed into the EPS system.


    NOTES:

    This stems from the observation that, as seen in TNG, plasma is pumped up to the nacelles and "injected" into the warp coils. If the coils use electricity, I think there would be no reason to "inject" it there beacause the plasma would only be the medium for the moving electrical energy (for comparison: you don't "pump" power cables into your computer, you use them to "pump" electrical energy into it). Also it wouldn't be "highly energetic" since this energy would be already converted to electricity.
    Additionaly, if the warp coils would use electrical energy, the placement of the reactors in the nacelles and the energizer system in the secondary hull would make no sense. Plasma would be pumped down the pylons to the energizer and then up again to the warp coils.
    And there cannot be additional "Dilithium Crystal Converter Assemblies" in the nacelles because in the series, the failure of the crystals in main engineering always resulted in the ship losing main power.


    Phew! I hope I didn't forget anything. :lol:
     
    Last edited: Oct 17, 2013
  9. Crazy Eddie

    Crazy Eddie Vice Admiral Admiral

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    This is a slight derail, but I'm finally getting around to this subject, and it kind of starts with the revelation that Starfleet basically has transwarp drive or something like it as early as 2259 in the Abrams timeline. Figured I'd bounce this off you before I ran with it, though:

    My conclusion is that Starfleet ALWAYS had transwarp drive, having obtained it from the Xindi in the 22nd century; the problem is, trans-warp drives only work efficiently in certain regions of space (where it can work with a natural subspace vortex) but otherwise has to create an artificial one as it goes. Some solutions -- the Borg, for example -- create permanent artificial vortexes ahead of time, which cuts the hardware requirement but limits their use of transwarp to pre-defined navigation points along their network. Starfleet's drive method was to create those vortexes on the fly so you wouldn't have to build the network ahead of time and you could travel wherever you wanted to go. The advantage with the Borg method is that those permanent vortexes are ALOT faster to move through and require very little specialized hardware to use; the disadvantage, of course, is that it takes hundreds of years to BUILD those conduits in the first place. For a race like the Borg, this isn't really much of a disadvantage, but for the Federation that's a long-term project they simply don't have the stomach for.

    The first transwarp prototype was built in the 2190s as XCV-330 "Enterprise-II." That ship -- the fastest ever built by the Federation even to this day -- had twelve warp cores and was driven by a torroidal engine five kilometers in diameter. Smaller (and much MUCH slower) trans-warp engines developed later are still enormous and absurdly expensive; the single warp nacelle of the USS Kelvin cost more than any three conventional starships, and its warp core was a one-of-a-kind multi-chambered monstrosity that cost as much as a small space station.

    "The Great Experiment" was Starfleet's effort to develop a trans-warp drive that could be powered by a normal (i.e. "not insanely over-engineered") drive system, which could therefore be mass-produced into a whole fleet of ships instead of hand-crafted one at a time in a small number of immense "hot rod" vessels. Hence Scotty's incredulity: nobody really believes Excelsior's transwarp drive will ever work, because until now all the transwarp ships have been MONSTERS, with warp cores the size of office buildings and nacelles big enough to have their own zip codes. Those ships are so over-powered and so expensive that Starfleet completely stopped building them for a while, figuring that The Great Experiment was about to pay off soon and they could start putting transwarp engines on "normal" starships. Then Narada shot Kelvin to pieces, and Starfleet decided it couldn't afford to wait.

    In that sense, the huge vertical/collider warp cores of the TNG era would be the logical consequence of the great experiment. The collider configuration is probably an efficient way of boosting power to the reaction without making the warp core unnecessarily huge or expensive (and so would not require, say, several tons of dilithium to operate at full power). Even the intermix chambers of TMP seem to require a few hundred kilos of dilithium, but would never be able to handle the output needed for sustained (Federation-style) transwarp flight.

    Just another spin on the idea that warp drive in the TNG era is basically normalized trans-warp. Which is another reason why the jump to warp in TNG actually looks like this.
    [/derail]

    Sorry for the rant. I go back to lurking now.:evil:
     
  10. Egger

    Egger Lieutenant Red Shirt

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    No need to feel sorry. ^^
    I like this explaination very much. And if someone doesn't like the Abramsverse, just take the Kelvin out of the equation and still there's the XCV-330 left to support this theory.

    Regarding the TNG warp core design, I also figured that Starfleet may have developed a kind of coating for the reaction chamber that converts the neutrinos created in the reaction into usable energy. Before that, they had to use these giant TMP style swirl chambers to produce enough energy.
    And now, with the ability to use the neutrinos too, the reaction chamber could be much smaller with the TNG design.
     
  11. Praetor

    Praetor Vice Admiral Admiral

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    Interesting theories. Our notions are not incompatible. I've made the assumption at some point that the "energizers" are either the same thing as, or a component of, the various "EPS manifold"s and such mentioned in TNG-era Trek.

    To my thinking, having a reactor in the hull is considered an acceptable risk, and can have advantages in that it is more directly accessible for monitoring and maintenance. In ENT, we had a fairly straightforward reactor mated to a rather complicated "plasma accelerator" system. I assume the reason for the accelerator is that the reactor wasn't efficient enough to produce rich enough plasma to power the engines.

    By TOS, the power requirements evolved to the point that a two-stage reaction is required. My reasoning for making the hull-side reactor smaller is that the nacelles themselves always seem to be more powerful/important than anything in the hull. The TOS reactor setup would essentially be an inefficient version of the later TMP setup; a very unfocused "swirl."

    I think I'm onboard with the nacelle reactors ceasing to exist for TMP-era tech, using the intermix swirl as a replacement for the need for them. Then, the second-stage supercharger of Excelsior can kind of be a throwback to this. (I'm increasingly more onboard with just ignoring the TNG-style core in TUC and just going with the swirl chamber for Excelsior.)

    I think the "collider" style reactor (as Eddie so keenly called it) is the natural evolution of this chain; an increasingly simplified, highly efficient high-energy reactor setup.

    Regarding the issue of plasma being pumped into the coils, it's my thought that it was probably always this way. The coils probably had channels in them to allow plasma to flow inside, with the coils somehow absorbing the energy directly from them and "evaporating" the plasma in the process. I suspect that the ship's main energizers also sort of evaporate some plasma, but I suspect that the ship's power needs are generally such that the main energizers merely siphon some power from the warp plasma as it passes through the manifolds on its way to the nacelles. To my thinking, this is all the more reason to have the ship's plasma manifolds adjacent to the power transfer conduits to the nacelles.

    You make sense there, sir... lots of sense. I really like your theory overall.

    One thing I certainly think I might borrow from your notion is the idea that Starfleet may've been theorizing about transwarp for a very, very long time but that it was utterly unworkable until the late 23rd century, and the idea that part of the reason for calling it the "Great Experiment" was the skepticism surrounding that.

    It also gives XCV-330 something better to do. :rommie:
     
  12. QuinnTV

    QuinnTV Lieutenant Commander Red Shirt

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    Crazy Eddie, that's one hell of an interesting idea. I like it.
     
  13. Nob Akimoto

    Nob Akimoto Captain Captain

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    I hope you meant 5km in circumference.

    Because 5km in diameter...well that would be an absurdly large ship.
     
  14. Egger

    Egger Lieutenant Red Shirt

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    My thinking is that the reactors by the time of TOS are really reliable, so having them in the nacelles is no problem because they don't need much maintenance. What needs the maintenance is the energizer (more specifically the "dilithium crystal converter assembly"), so, in addition to it being unneccesary for the nacelles themselves, that one needs to be in the hull. The additional reactor in the Constitution class is there to provide more energy for the ships most demanding systems (weapons, shields and so on), to give the warp drive an additional boost and to supply the deflector dish - or, as I see it, the "high power long range sensor (the dish) and scanner (the thing behind the dish) assembly".

    Slightly Off-topic:
    That's another interesting thing. My thinking of the deflector dish is that it is not really the deflector. It's the main long range sensor.
    There are ships like the Hermes class which only have the dish. Those can only "listen" into deep space, but cannot scan (like a radar). Only the ships with the thing behind the dish can do that. Ships enirely without a dish have only smaller sensors and scanners (which all the other ones have too). And the deflectors (maybe the angular shaped things to the left, right and bottom of the dish) are only added to this whole assembly, because they benefit from it (or the other way round).​


    By the way, I'm basing my view of the reactor system on blssdwlf's work:
    The thread: http://www.trekbbs.com/showthread.php?t=119751
    The most important posts:
    http://www.trekbbs.com/showpost.php?p=4392309&postcount=237
    http://www.trekbbs.com/showpost.php?p=4399245&postcount=251
    and
    http://www.trekbbs.com/showpost.php?p=4402968&postcount=262


    I think the coils and energizers don't evaporate the plasma but simply suck all the energy out and then the plasma changes its aggregate phase back to deuterium gas. It is then pumped to the deuterium tanks or the reactors again.
     
    Last edited: Oct 19, 2013
  15. Crazy Eddie

    Crazy Eddie Vice Admiral Admiral

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    It WAS an absurdly large ship. That's the whole point: it may have broken (and held) all Federation speed records for over a century, but its transwarp drive was so huge that it could never be a practical exploration vessel. The few practical transwarp vessels weren't quite as large, but the use of exotic materials in their engines and drive cores made them absurdly expensive, maintenance intensive, hard to repair and impossible to replace. They were on the raggedy edge of being useful, and Starfleet barely tolerated their continued existence.

    Of course, even that would not be without precedent, considering Terra Prime managed to install a warp drive on the Orpheus Mining Colony without anyone knowing about it.
     
  16. Robert Comsol

    Robert Comsol Commodore Commodore

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    Yes, that's what TOS obviously suggests for the Enterprise Starship Class, according to the dialogues plus the engineering hull reactor according to "That Which Survives".

    That's one explanation, but it could also be an amplifier of energy (that's what TAS and TNG suggested).

    About that I'm not that certain. It's correct that the room added in TWOK apparently holds the DCCA which Spock repairs but the "main energizer" could be the entire surroundings of the room (the TWOK version of the TOS "cathdral") where the DCCA (now) just happens to be in the same room.

    Palmer: (to Spock) Sir, Deck seven reports power failure in main energizers. Implementing emergency procedures. (another hit) Severe casualties reported on decks three and four. Damage control party sealing off inner hull rupture.

    This dialogue from "The Doomsday Machine" clearly indicates, IMHO, there is more than one "main energizer" aboard the TOS Enterprise and these are located on Deck 7.

    Bob
     
  17. Egger

    Egger Lieutenant Red Shirt

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    Yeah. I was long trying to sort out how all that works and how to make sense of the design and technology of the TOS Enterprise, and a kind of big picture started to form (with much input from several threads on this board) around the assumption that dilithium is an energy converter.
    I wonder how the amplifier-explaination could be worked out.

    In TNG, the DCCA would simply be incorporated into the reaction chamber where it would be directly at the "source". I don't really know how the electricity it generates would flow (there had to be some kind of barrier to have an electric potential I think) but the plasma conduits would transport the energy to the main EPS taps where it is diverted to the EPS system.


    Oh, my fault, of course the DCCA is only part of it. What I really meant was that the DCCA is the distinguishing part between all the energizer systems, it is what makes the one in the engineering hull the main energizer.


    That would then be the energizers of the impulse reactors I would think, but if it is also a "main" one ... hmm.
     
  18. Praetor

    Praetor Vice Admiral Admiral

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    Overall, I agree and like the way you suggest it works.

    Hm, that's an interesting notion. I would wonder, though, whether this waste plasma would actually be reusable, though? Still it's an interesting thought, and rather pleasing to think of the ship as a mostly closed system (minus the antimatter.) Are there any major instances of ships running out of deuterium? I can't recall any off-hand.

    I agree that the large size kind of helps make the case of the impracticality... how many are you thinking would have existed overall? Maybe the XCV 330 was the only one...

    I've always liked that theory of yours... maybe it both controls and amplifies the reactions at the same time?

    I tend to agree with these observations, Bob.

    Back to our previously scheduled program, here's the work that's proceeded on the larger Excelsior. I realized I had somehow gained extra decks from my original ILM model analysis (I think from the Enterprise-B analysis) and I've ultimately decided to go back to the original window row analysis based on TSFS and TUC screencaps. She has 30 habitable decks, but is close to 32 decks tall.

    [​IMG]

    Doing some math, I've come up with several possible sizes for this iteration of the ship, using the pixels of the rasterized image.

    At the size I rendered it, each deck is 25 pixels tall and the ship is overall 4,934 pixels long. Three distinct possibilities:

    (1) 10 ft decks:

    10 ft/25 px: .4 ft/px
    4934 px * .4 = 1973.6 ft = 601.55328/602 meters

    (2) 12 ft decks:

    12 ft/25 px = .48ft/px
    4934 px * .48 = 2368.32 = 752.343936 meters

    (3) 8 ft decks:

    8 ft/25 px = .32 ft/px
    4934 px * .32 = 1578.88 ft = 481.24624 meters

    I'm leaning towards option one. I like the notion of uniform deck heights because I'm asserting that this is the beginning of TNG-era non-pressure compartment building techniques and all TNG-era deck heights appear mostly uniform. Plus, somehow it makes sense that all decks would be the same height as the saucer heights of the TOS/TMP era.

    I'm also slowly settling into being comfortable with the TMP intermix chamber setup being used until around the time the Melbourne was launched. You'll also note that I've decided the larger pod section of the large shuttlebay should be used for housing the larger TUC executive/spacedock shuttle, of which the ship may carry two, and the above section used for workbees and standard shuttles. I'm still refining and accurizing this area a bit.
     
  19. Egger

    Egger Lieutenant Red Shirt

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    The ship would eventually run out of deuterium (and this happened in Voyager at least one time), because not all of it can be reused. My thinking is that the mixing ratio of matter and antimatter in the reactor is not 1:1. There is more deuterium pumped in, and that will absorb the energy from the reaction and become the highly energetic plasma. This plasma, after the energy has been "sucked" out by warp coils and energizers can then be reused as deuterium fuel.
    However, a part of the deuterium (maybe most of it) used in the reactors will have been annihilated with antimatter and therefore is gone.


    I agree on the 601 metres, but it's interesting that with option 3 we would roughly be at the "canon" length.
     
  20. Nob Akimoto

    Nob Akimoto Captain Captain

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    TNG TM says that under most operating circumstances the M:AM ratio in a GCS is 25:1 and that it gets up to 1:1 as it approaches higher warp factors.

    What if the thing that makes post-Excelsior designs special is that they're able to go with a pure 1:1 M/AM ratio rather than having to have reactant deuterium to be used in a way that can be energized. That is to say, things like the swirlie chambers probably are some sort of anti-matter spiked fusion plant rather than a pure m:am 1:1 reaction. Hence you'd need the stuff to be reacting at the whole thing of the chamber, rather than in a single reaction chamber.

    Also, a XCV-330 with a 5km diameter engine would at least be the overall size of Earth Spacedock. Basically we're talking about a Babylon station sized thing.