ilithi dragon, on 08 January 2012 - 07:19 PM, said:
But do we have any specific figures, or even rough figures, to work with? 0.9c projectiles are going to hurt, but how massive are they? That determines how MUCH they hurt. Going with a rough estimate for fist size of 600 cm^3 (rounding up to an even figure from a 3inx3inx4in fist), and assuming a slug of solid tungsten, that gives us a projectile mass of ~11.35 kilograms.
The straight Newtonian kinetic energy is 413,707,500,000,000,000 Joules, or 413.7 PetaJoules. However, at 0.9c the effects of relativity become very noticeable. At 0.9c the Lorentz factor is 2.3. So we take our Newtonian kinetic energy figure and multiply it by the Lorentz factor to get the relativistic kinetic energy of the projectile, which is 951.51 PetaJoules, or to go with a nice round figure since this is just a very rough estimate, ~950 PJ. That's a pretty respectable bullet right there, on the upper range of Trek weapon yields. How fast can they fire those rounds?
"
Offensive kinetic kill missiles are the main offensive weapons in any ship-to-ship or ship-to-ground combat.The actual payload of the missiles are about the size of an adult Human's fist and
weighs about 1 kilogram, while the delivery system is
about 3 meters long. They
move at 90 to 95 PSL and
cause a 40 megaton size explosion when they hit, due to the kinetic energy of impact. Most have a
range of 8 to 10 Light Minutes."
"
Defensive Missiles are the main defensive weapon against incoming offensive missiles in ship to ship combat and can also be used against enemy fighters. Defensive missiles are smaller missiles (
about 1/3 of a kilogram), which move
slower than offensive missiles (60 to 70 PSL), but with twice the acceleration. They have a
range of only 6 to 8 light seconds.
Kinetic warheads do not carry an explosive payload, but rather rely on the fact that kinetic energy equals one-half mass times velocity-squared (ie, .33 Kg x 70% of 300,000 kilometers per second). Thus when defensive missiles impact with a ship,
they cause incredible damage, with many megatons of energy."
"
Smart Missiles are broad a broad range of weaponry that are essentially projectiles that rely on sensors to track, lock on, and intercept their targets. They are usually extended-range, high-endurance missiles with a variety of payloads and kill vehicles that rely on a combination of ship, drone and organic active/passive sensor systems to find targets and destroy them.
At their top, speed, smart missiles can achieve upwards of 90 PSL. Smart missiles are most effective at less than one AU, but special variants can extend that range to 3 AU when combat operations permit missile control "handoff" from platform to platform; many Commonwealth fleets often do this, and indeed have several vessels that are specially outfitted to preform this specific purpose."
Unfortunately, the wiki doesn't have specs for the
multiple independent kill vehicle, but I would think it can be not-unreasonably assumed that the warheads they launch are similar to OKKMs...
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
Another critical question is do they use any mass-reduction on the rounds fired? This would be advantageous if it could be sustained at range because it would allow the ship's projectiles to travel faster without exponentially greater energy expenditure to fire the weapon, greatly increasing the weapon's travel time (and thus accuracy and effective range), but it would significantly reduce the above estimated figure.
I don't know.
It seems that High Guard ships (at least, the XMCs like the
Andromeda) use an "
electromagnetic launch system":
Quote
Electromagnetic Launch Systems (ELS) are high powered mass launchers which accelerate offensive and defensive loads into space. The ELS is necessary to allow for a safe distance between a missile and the originating starship when the missile activates its organic acceleration capability.
The ELS functions just like a rail gun where a set of electromagnets are switched on in a line, which shoots projectiles almost at the speed of light. The effective range of most ELS launchers covers approximately 2 light minutes. Once the missiles are a predetermined distance from the ship, the vehicles conventional propulsion system activate. This is very useful, because a ship's ELS launchers can assure explosives activate away from the vessel and the amount of fuel needed for a single missile is decreased thus decreasing its overall size. Since smaller weapons are easier to store, a starship with an advanced ELS can carry more offensive and defensive missiles.
High Guard vessels, as well as many other spacefaring species and organizations, use the ELS as their preferred launch system of choice.
Granted, "...where a set of electromagnets are switched on in a line..." makes the ELS sound more like a coilgun than a railgun, but it doesn't really change the point made, yes?
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
Traveling between galaxies in minutes is pretty impressive, though not necessarily energy-intensive (depends on how energy-intensive their FTL drive is). However, do you have a direct example of this actually happening?
I think "between the galaxies in minutes" is pushing it.
I quoted earlier that the
Andromeda, without a pilot (Andromeda-verse ships need organic pilots to safely and efficiently navigate slipstream in a manner similar to how the Imperium's ships need Navigators to traverse the Immaterium), was able to travel from the galaxy M66 (~36 million light years from the Milky Way) back to Commonwealth territory in the Triangulum galaxy (a satellite galaxy to the
Andromeda's namesake, ~3.07 million light years form the Milky Way) in 13 months.
Without knowing the actual distance between the two galaxies or their respective positions relative to each other or the Milky Way (by knowing the distances of each from the Milky Way), we can say that the
Andromeda was able to cover a distance of between 33 million and 39 million light years in 13 months while lost and pilotless.
From there, we can reasonably assume that the same ship traveling at the same average rate would be able to cover a distance of ~3 light years (the distance between the Milky Way and Andromeda/Triangulum) in about 1/11 to 1/13 the time - about a month.
With a pilot (and the associated ability to navigate slipstream), we can assume the Milky Way to Andromeda/Triangulum trip (across the Commonwealth) would probably be much shorter - a few days to a week or so.
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
The ability to 'consume' debris from other ships for raw materials with nanotech is pretty impressive, though Trek transporters and replicators can effectively perform the same function. Handy in a pinch, though it's probably pretty energy-intensive, or requires consuming a fair amount of the material salvaged to power the nanites.
That's some impressive mass reduction, though Trek has comparable tech (and far more massive ships, by one to two orders of magnitude), and I think Stargate does as well, at least by late-series.
"
Nanobots are used extensively on High Guard ships. They are used to break down Asteroids that are pulled on board to extract useful minerals subsequently used to absorb missile damage and repair the ship's hull. They can also be used to clean the hulls of toxic waste and Ag mass packets. They are also used in Force lance smart bullets. Others nanobots defend against attacks from hostile nanomachines (which have a long history of use as weapons in modern warfare)."
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
Bolts of anti-matter traveling at high relativistic velocities are pretty impressive, but not necessarily devastating. It's not that hard to get a low-mass charged particle stream traveling at near lightspeed. Trek does it all the time. Hell, we can do it today (what do you think an electron microscope is?). Any mass figures on their anti-proton rounds? Hydrogen has a density of 0.08988 gram per liter. If we take our 600 cm^3 fist-sized projectile from above and assume an anti-proton projectile of equal size and three times hydrogen density (which would be difficult to maintain cohesion after firing because the negatively-charged anti-protons would push each other apart to lower densities than neutral-charge hydrogen), we should be able to get a fair figure for the energy outputs of these projectiles. so 0.08988 g/L * 0.600 L * 3 = 0.161784 gram. At 0.99c the Lorentz factor is 7.09, and the kinetic energy for 0.161784 gram is 7,125,533,184,873 Joules. That gives us a total relativistic kinetic energy of 7,125,533,184,873 * 7.09 = 50,520,030,280,749 Joules or a rough figure of 50.52 TeraJoules worth of kinetic energy. Now, the projectiles are also comprised of anti-protons, which will have an annihilatory reaction with any matter containing protons it interacts with (technically, the anti-protons themselves would have to come into contact with the protons in the target material, which wouldn't necessarily happen just with contact with atoms, but the particles are traveling fast enough that we can assume they would overcome any interfering nuclear forces and make contact). This is easily calculated as well. We take our figure of 0.000161784 kilograms of anti-protons, multiply it by two, and plug it into E=mc^2. That gives us a total energy reaction of 29,121,120,000,000 Joules, or 29.121 TeraJoules. Adding that together with our kinetic energy figure and we get a total of ~80 TeraJoules per shot. That's pretty respectable, but paltry compared to what Trek puts out, or Stargate puts out late-series. It's also well over four orders of magnitude below the kinetic energy figure for the fist-sized object calculated above, which would suggest that the fist-sized figure above is highly over-estimated (this figure calculated here is not likely to be over-estimated, because it assumed three times the density of atomic hydrogen, which would have a greater density than raw protons or anti-protons because they would be repelled by their same eletromagnetic charge).
How many of these anti-proton bolts do they fire at a time, and what is their overall rate-of-fire?
I don't know the actual ROF of the
AP cannons, but
the graphic from the wiki shows several individual bolts in close proximity, so we can not-unreasonably assume that it is fairly high.
XMCs have 12 AP cannons.
Likewise, I do not know the official ROF for the
point-defense lasers (35-50 MW range (high end for an XMC), range of 4 light minutes), but
the graphic from the wiki shows that it is fairly high.
XMCs have 12 PDLs.
The ELS have
a stated ROF of 8 missiles per second, and the XMCs have 40 ELS launchers - a total ROF of 19,200 missiles per minute.
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
Many franchises can destroy worlds. Trek, Wars, Stargate, 40K. Trek and Stargate have also destroyed entire solar systems.
The
Andromeda's normal armaments are
stated to be able to
depopulate a planet (implied to be an Earth-sized planet) in "under 2 minutes".
With regard to outright destroying a planet:
Nova Bombs (XMCs carry 40) would be used to destroy the star (bathing the planets in starfire in the process), an
AP Fusion Catalyst would fire a beam of anti-protons at a planet (which may or may not be enough to destroy a planet via the M/AM reaction), and dumping the
exotic matter pulsar (the core of the slipstream drive) would reduce a planet to rubble at the cost of a ship's slipstream capability.
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
Can you give us some specifics on their sensor capabilities? Specific examples of demonstrated performance, like observed ranges and the like.
"The
AIS-117M Advanced Imaging Sensor (Sythetic Aperture / Moving Target Indicator) is a combined SA and MTI sensor package that can detect fixed and mobile targets, as well as fuse sensor tracks from multiple arrays into a complete picture of the area of interest. The SA suite is also capable of interferometric analysis, which allows the local AI node to build
a three-dimensional representation of visible surfaces to a one nanometer resolution at 24 light-seconds."
"The
AIS-117I Advanced Imaging Sensor (Inverse Synthetic Aperture) is an ISA system that is capable of long-range detection of relatively stationary targets in high-noise environments. The ISA component is an active sensor system that creates virtual swaths based on the pitch or yaw of te target. Since the size of the aperture is dictated by the motion of the target, ISA sensor detection capability is not limited by range."
"The
ES/A-9r Electronic Support and Attack Measure Suite is a sensor and electronic countermeasure suite that detects active sensor and communications emissions from hostile assets, including ships and missiles. The electronic attack component of the package can be used to jam both types of signals, and in some cases can overload the hostile transceiver."
"The
HSS-114D Hyper-Spectral Scanner (EO) is a combined electro-optical / active sensor array that detects target reflections across a continuous spectrum, and measures the spectral signature of targets against the expected spectral signature of the background area. Useful for detecting camouflaged or otherwise obscured targets, and suspected targets can be tested with an active EM sensor in order to improve accuracy in high-threat environments."
"The
PAS-37Q System Search Sensor (Phased Array) is an active EM search system that uses phased arrays of small sensor transceivers to create shapable swaths across any portion of the sky. Large fields of these sensors allow for wider scanner swaths and more sensitive target detection in high-threat, high-noise environments. Despite their capability, these sensors can potentially give away the the sensing ship, limiting their use in combat situations."
"
Sensor Drones are non-sentient, disarmed, drones that many High Guard ships use to extend their sensor range.
The Andromeda carries about a dozen drones on board, and she uses these drones when she is searching for something or surveying a large area of space. While the
Andromeda herself has a large on board sensor array, it can be limited.
So, when she needs to extend her range, she deploys the drones so that she can get a live picture relayed to her from the drones, or she can deploy them in a rough circle at the very edge of her sensor capabilities. Since the drones themselves possess powerful sensors, they can probe and see a lot farther that the
Andromeda can, and they relay this data back to her. She can use this to gather data about a battle and then plan and attack accordingly, or any other imaginable usage."
"The
Eternal Vigilance class Long Range Surveillance (LRS) ship provides the eyes and ears for a
HCBG and
PRG. Equipped with multiple arrays of high-powered active and passive sensor suites, the LRS is ideal for providing early-warning of impending attack or the strategic positioning of enemy vessels."
ilithi dragon, on 08 January 2012 - 07:19 PM, said:
I'm not convinced that Andromeda would win. Undoubtedly they have superior FTL capabilities to many franchises, particularly Trek at long range (their ships can sprint pretty damn fast, but they are limited in how long they can sustain that over great distances), though Trek will likely greatly overcome that soon (with the knowledge of slipstream and Borg transwarp tech Voyager brought back, it will likely only take Starfleet a few years, a decade at most, to develop a fully-functional slipstream drive, especially since Voyager was able to jury-rig their existing warp drive to kinda-sorta work twice). Exactly how they compare at FTL depends on what kind of specific FTL figures can be provided for Andromeda. The rest is still uncertain, since the above estimates for firepower indicates at best a weapons superiority by only a factor or two, and potentially significantly inferior weapons yields.
Well, plenty of technical information is posted above.
Perhaps we could get the same information, condensed to the same degree in a single post, for the equivalent Federation and Imperium equipment?
For example: on weapon ranges, all I could find was "In that same year {2367}, the range of a Federation photon torpedo was slightly below 300,000 kilometers" (see
here), while on sensor range, "In 2367. Lieutenant Commander Geordi La Forge stated that the long range sensors aboard the USS Enterprise-D were able to scan a radius of ten light years within a 24-hour period; effectively, one sector per day" (see
here). Perhaps you could provide some additional information (and citations)?
Also, could you elaborate on the exact capabilities of ST's versions of slipstream, subspace, and transwarp - how are they different from each other and from standard warp propulsion, and what are their respective capabilities and limitations?
Also, we'd have to look at specific periods for each, yes?
I've maintained the position of the
original Systems Common at its height (before the fall to the Nietzscheans' attack from within and the Magogs' attack from without and the "Long Night"), rather than the second Systems Commonwealth established following the return of the Vedrans (which was beginning to rebuild as of the series finale).
I assume we're taking the Federation circa 2379 (
Star Trek: Nemesis; post-
Voyager and post-
DS9) and the Imperium circa 999.M41 (year 40,999 or 41,999
)?
Edited by Strum Wealh, 08 January 2012 - 10:26 PM.