Jonathan_S wrote:While I agree that it's likely a very long and expensive refit to add internal gtorp carriage it's possible there's some quicker way of doing it by just remuddling the pod bay. But the MAlign wouldn't have wanted to do that for Oyster Bay because the gtorp was untried in actual combat and they viewed the cataphract pods as a necessary redundancy and would have rejected any thought of reducing Cataphract pods to carry more of the less trusted gtorps.
Your argument appears to be that even if it could be done, it wouldn't have been because they needed the internal volume for the pods that they did have to carry. Is that it?
I disagree. My first argument was that if it could have been done in a reasonable time frame, some of the Sharks to be used in Oyster Bay would have had this refit to carry the torpedoes internally and thus not subject them to weeks-long run at high fractions of c, thus abrading their exteriors and potentially compromising their stealth. The counter-argument to yours is that the pods limpeted to the hull might abrade, but not the missiles themselves, so no capability would be lost. And since the pods would travel ballistically anyway, they were as stealthy as they could be, abraded or not.
If that happens to have been the case then post-OB, after they was that the gtorps did in fact work as advertised they'd might be more willing to give up pod stowage and roll rate to carry more gtorps. But that's speculation on speculation. Enough of an option that most folks wouldn't scream "retcon" if such a retrofit happened but no evidence at all that RFC would view it as desirable or even possible.
Unknown how many rails such a ship could have for pods. But my guess is that it couldn't both carry torpedoes and pods: you have to choose one or the other. Or at least, you can only roll them in the (reverse) order that they were loaded, not pick and choose.
Not necessarily. If the gtorp was mid development when the Shark design was finalized their might still have been multiple camps around what acceleration an effective torpedo would require.
I understand. I'm saying that was not the impression I got when first reading through the books, though I'll admit there is no proof one way or the other.
The text is quite clear that the gtorp's acceleration is limited by its size -- you can only squeeze so many spider emitters onto something that small. So, if the folks involved in its development hadn't yet settled on the "few hundred gravities" accel of the final weapon there could have still be wild variations in proposed weapon size (even ignoring potential arguments over endurance and payload).
Again, not the impression I got. Here, I think you're putting the cart ahead of the oxen: the size of the torpedo is determined by its internal working systems, and then they bolt however many spider tractors on the hull as will fit and will be supported by the power generation. You're implying that they would choose to make them bigger just so there could be more tractors and thus gain more acceleration.
I don't think that's likely, at least not beyond small variations: a much larger torpedo would be unwieldy to carry, too expensive to produce and deploy in sufficient quantities. It's also possible a much larger torpedo would compromise on the stealth due to the larger area for detection and especially the square-cube law for the heat dissipation from the internal power plant. I also think that the acceleration was going to be paltry anyway - the build that we got, which is too big for the Sharks, is "a few hundred gravities" - so making it much bigger wouldn't gain the MAN sufficient advantage to justify the drawbacks.
Therefore, I think the overall size would have been known for the design of the Sharks, or at least for the build of at least half of them. If it could have been done, it would have been done for some of them.
If some are convinced you need a quicker weapons; one that at least has a noticeable acceleration advantage over freighters and (old style) LACs that'd seemingly necessitate a design about twice as long as the gtorp they finally settled on. And there might be others who view even the gtorp we got as too large; saying with its stealth it didn't need accel and if you dropped it to, say, 50 gees it'd a lot smaller; making it easier to launch and letting you carry more in a given magazine volume.
I wouldn't design my weapons so they can hit freighters and old-style LACs. Those are not worthwhile targets. Either I can catch superdreadnoughts or it just doesn't matter how slow it is, because the tactics of using them will dictate generating intercepts in spite of the target's acceleration. Do note we don't know how much "a few hundred gravities" is - if it is about 400 gravities, they would catch pre-improved-compensator SDs when not running at full military acceleration. And this version is already described as "small."
But see above: I don't think that you can drop it to a size that would only achieve 50 G and still have a capable torpedo: the graser mount, power plant and the capacitors to feed the graser for 3 seconds probably dictate the minimum size and that's close to what the torpedo is today.
Another indication is that if this were possible, they would have made multiple different versions of the torpedoes, with different capabilities. They still might, but if they had made smaller, slower torpedoes, those are the ones they would have used against fixed targets like in Oyster Bay.
That kind of uncertainty would make it very hard to even leave reasonable reserved volume in the Shark design for later installation of gtorp magazines and launchers; and it might have been surprisingly late in the gtorp's development before acceleration (and thus size) specs were finally frozen.
I still disagree. Even if you're right about the size of a torpedo varying wildly by 300% or more, the MAN would have designed the Shark to be able to accommodate the smaller variants of the torpedo, if it turned out that this was the chosen design. But then if they had made the ships like that, I would expect that to become a self-fulfilling prophecy so the torpedoes chosen for OB would be the ones it could carry internally (see above).
Instead, we hear that they weren't designed to carry torpedoes internally at all, and we hear only of a single torpedo size. This is what leads me to conclude that the minimum viable torpedo was already too big to ever be carried internally short of a full-size LD, which the Sharks were never designed to be.