++http://www.strek-v-swars.net/phpBB2/viewtopic.php?t=409
Is the evidence he's presenting that contradicts the ICS valid?BigHairyMountainMan wrote:I've heard lots of claims rattling around recently, choking up a number of threads. The claims revolve (as usual) around the ICS claims of 200 gigaton medium turbolasers... and trying to fit them into the ESB asteroid field via inaccurate or outright dishonest claims.
Let's review, shall we? I'm sure we're all familiar with the Turbolaser Commentaries. Although I will not comment on the actual content of the analysis of the TLC, there are several incidental points that I've pointed out before that deserve repeating which happen to be confirmed by this particular page.
First, there are a number of sizes of turbolaser bolts seen fired by ISDs. These include small bolts, mid-sized bolts, and large bolts; the firing rate is dependent on the type, as I have noted before. Peak firing rate, out of the entire trilogy, is ~5.4 bolts per second last time I checked. Typical rates of fire aren't any higher than 1 bolt per second.
Large bolts are fired at substantially lower rates, apparently only available overy few seconds.
Small bolts, as I have noted before, were not involved in any asteroid blasting. Asteroid blasting appears to have been the exclusive province of large and medium sized bolts, both of which are fired from the body of the ISD.
Small bolts are generally fired from the visible forward "nodes," and were not seen (in any case that I've examined) to have destroyed any asteroids. These nodes are visible on the plate (top/bottom) hull sections of the ISD. As Kane Starkiller pointed out here, we witnessed the location from which at least some of the ESB asteroid-blasting shots were fired: The trench, not far from the notches.
The TLC note: TLC wrote:
The smallest bolts are only a few meters long. They were witnessed in only two scenes: defeating the Falcon's shields in ESB, and firing on the Falcon as it was departing Tatooine.
TLC wrote:
The only time these bolts have been seen is the scene referenced above, the asteroid scene, and possibly when the Falcon "attacked" the ISD, as it was passing over the dorsal surface.
TLC wrote:
The bolts fired in the earliest asteroid-vape scene in film were mostly middle sized TL bolts (see Turbolaser Characteristics for more information about TL bolt sizes). Longer TL bolts were seen in this scenes as well, but were less frequent. The heavy dorsal turrets were never used.
Although I frankly have my doubts that the author of the TLC examined the ROTJ and ANH firing scenes in as good depth as the TESB asteroid scenes, it is perfectly clear that this much picked-over scene involves not light, but medium-grade bolts at a minimum. Light "anti-fighter" bolts used by ISDs are seen - and they, like fighter bolts, are much smaller.
These, then, are not light turbolasers.
Now, what about the 200 gigaton medium turbolasers? I'll put it bluntly: Look at the canon policy of these boards. Material from the ICS books are not admissible unless directly supported by the movies/novelizations/screenplays/scripts.
The ICS claims point defense (i.e., light) lasers at 6 megatons. We've seen medium grade turbolasers with a yield of up to 60-500 terajoules... substantially less, in other words. Outright contradicting the 200 gigaton yields, in fact.
If medium turbolasers fired 6 megaton bolts, the asteroids seen in the TESB blasting scene would be violet white single-frame flashes. We don't have that. We have white flares and chunky yellow-orange debris taking several frames to dissipate. If medium turbolasers fired 200 gigaton bolts, the Falcon would be buffeted by the shockwave.
So medium turbolasers in fact fire - as directly supported by the TESB asteroid field - somewhere in the neighborhood of 60-500 terajoules.
If a medium gun shoots 60-500 terajoules, 6 megatons is a possible yield for the main cannon. However, it's worth noting that the peak firing rate demonstrated in the films isn't any higher than 2700 terawatts, and the firing rate for "long" bolts is notably less than 1 per second. For the very heaviest bolts, we would expect to see one fired every 5-10 seconds... at most.
This is, incidentally, more or less par for the course in big-gun battleshipry. Lucas's battle scenes are quite reminiscent of WWII naval/air battles, so we should not feel in the slightest bit guilty for using straight analogy. The heavy guns should be 800-23,000 terajoules; given a total rate of fire for medium batteries of 5.4 per second, we should expect a peak main battery rate of fire of roughly 1 shot per 5 seconds, roughly consistent with the slower firing rates of the longer bolts seen. Yes, for the entire battery... representing a peak "main" battery power estimate of 4600 terawatts, 1.1 megatons per second.
In other words, a megaton per second is a high if reasonable estimate for overall ISD turbolaser output. 6 megatons per shot is not completely unreasonable - for the main battery.
200 gigatons per shot for the secondary battery is in no way reasonable, contradicting the movies; further, the ICS figures are not even admissible on these boards in the first place without direct support from the movies, novelizations, or scripts. The fact that the movies make this figure completely unreasonable means that no board placing the movies at the top of the heap in SW can conclude 200 gigaton medium turbolasers.