Evil S'tan wrote:Well I'm not sure which 'other' canon events Galaxy is referring too, but here’s a couple:
TNG "Genesis" The Enterprise is testing new tactical systems including improved torpedoes (11% increase in explosive yield). There are 3 torpedoes fired at asteroids, one of which misses and we get chance to scale the torpedoes at launch.
My own rough estimates;
Asteroid 1: 13m x 8m
Asteroid 2: 15m x 14m
Both asteroids were broken into large, relatively slow moving (I estimate <140m/s) pieces. Just for the sake of argument I assumed the explosion represented total vaporisation of ~50% of the asteroid, for ~15-25KT yields (assuming the asteroids only absorbed half the blast I might add).I suppose strictly speaking we should really just consider the requirements for fragmenting an asteroid ~a dozen metres or so in diameter, but that would be mean...
I remember this, Stan--good observations btw. I'd love to
see some vidcaps of this event.
With all respect to Darkling, I don't see what good it'd
do to test a weapon with greater yield at anything other
than maximum.
WRT consistency, we could assume Riker was on the
right track for order of magnitude estimates, and we
said that the asteroid in question had a volume equivalent of
a rock half its dimensions (approx. 2.5-3 km), AND if I'm
reading the Dark Lord's asteroid calculator correctly,
we're looking at about 15-27 megatons to fragment the thing.
That's a bit crude, since the volume of a 2.5 km wide rock
is somewhat less than simply half the volume of a 5 km wide
rock (1.41E10m^3 vs. 5.65E10m^3 if my math is correct).
With all of their torpedoes used, each would have a 60-108 kiloton
yield. With, say, 200 torpedoes used (dunno if that could
mean "most"?), and the higher fragmentation figure, that's
still only 150 kilotons/torpedo.
Voy "Rise"
Well I'm sure you all know of the asteroid in this one and Darkstars scaling thereof (which requires the Deflector to be wider than the main 'saucer' section of the hull!). Anyway my estimates:
Torpedo width at launch 2.2m (based on the Deflector)
Asteroid at torpedo impact: 44x29m
Yield of ~190KT assuming the 'missing' volume (~45%) was totally vaporised.
Interestingly, that's very much in line with Riker's expectations
in "Pegasus": 100-200 kiloton torpedoes. In fairness, however,
the crew was very surprised that the rock wasn't reduced
to centimeter-wide debris.
There is also TNG "Booby trap", the asteroids next to the torpedo's at impact are ~similar in size to those in Genesis, but I would need to get some decent screencap's of that for a reasonable estimate.
Yeah. We also have no idea how big the Promellian battlecruiser
is (the only reasonable scaling referent in the scene IIRC).
Star Trek Fact Files pegged it as 600m long, as someone else
noted, but that's a non-canon source (and is often pretty
out of whack from what I've seen).
Maybe if we saw the E-D near the battlecruiser, we could have
some ideas.
I also don't recall what sort of damage was done to the asteroids.
I do know we saw a vapor flash, but IIRC, we also saw some debris...
it might've been from the Promellian ship though.
Speaking of vapor flash, is there any way to directly apply that
to something like "Rise"?
And it seems as if there were a couple of other instances in
which photorps were used against asteroids. The scene in
TMP, and some other TNG episode of which I have no
recollection.
I'm also interested in how torpedo yields and shields are
related. We know a
Galaxy can absorb a lot of
energy over the course of hours; furthermore, they also
seem to have a pretty high burst capacity, given Worf's
ability to quickly reassemble the shields in "Survivors"
(call me on this if I'm misremembering or distorting
something).
How, then, do mid-ranged kiloton torpedoes
layeth so much smackdown on these shields? Is
it the rate at which they deliver their energy (maybe
a frame of video?)? Could it be that shields'
long-term "strength" as such IS much lower than
their burst capacity, contrary to what I sorta loosely
suggested above?; i.e., 100,000 TJ shields are only
good for a few thousand or ten thousand TW in one heaping
serving?
I'm also interested in knowing just how many torpedoes
are required to drop a starship's shields--and on top of
that come up with a rough spread (pun intended) for
the photorp/shield failure ratio for several *different*
kinds of ships; e.g., GCSs,
Mirandas, Klingon
warships, Borg ships, etc. I realize that, in particular,
requires a huge amount of guesswork, but at the
very least we should be able to figure out how many
the "hero" ships have taken in various battles (VGR
and
Equinox in "Equinox" for instance, E-A
from Trek VI, and so on).