cthia wrote:Thanks guys.
Jonathan, some sort of presser beam is the only explanation I could come up with. But I wanted to make sure, because when imagining the entire process removed from "on paper," it poses some interesting questions, not at all unlike the questions which arose when microscopically peering at the process of launching escape pods through shoals of debris.
For example, it must be a single presser beam or the entire operation would require a very large infrastructure simply to support a presser beam per LAC. And if it is indeed one presser beam then each LAC has to somehow be moved into position before launch. Does that imply some sort of rotary system? Similar to the same discussion about pods rotating before filling and launching? And, at what rate are they fired?
So, the ship's speed simply has to play a part in creating that separation, but I don't think the system can wholly rely upon that. Remember, your CLAC may have an initial low accel during launch because CLACs are held back for protection. But, if caught off guard they should be able to launch even while at rest.
Also, are CLACs similar enough to regular warships to launch LACs double broadside? Or is it a totally different design with huge LAC bays?
At any rate, nice posts!
Well the CLAC's acceleration can be beneficial to generating separation; their speed alone wouldn't be. There's (effectively) no friction in space, so if you launch a LAC out of a CLAC that's not accelerating it'll just coast right along with it; doesn't much matter if the CLAC is at standstill relative to the system or moving through it at 0.25c -- the LAC shares its velocity right up until the point of separation. Only acceleration after that point would generate separation.
(That's slightly unintuitive; as we're used to things on earth where air resistance rapidly robs them of their initial velocity, causing them to quickly fall behind a vehicle moving at constant velocity).Still, the ship's acceleration can help achieve the separation a bit sooner. But, like I showed, the LAC alone should be able to separate from a stationary (or at least, non-accelerating) CLAC in barely more than a minute.
I'm envisioning a launch using 3 different propulsion mode sequentially in a minute or so (or less than half that if the CLAC also accelerates after separation).
1. A presser shoves the LAC backwards out of its bay to a couple hundred meters; far enough for thrusters to safely be used (The LAC can flip end for end as it's covering this distance).
2. The LAC then uses its thrusters to accelerate out to 1000 km or so; far enough for its wedge to be safely used.
3. Finally bring up its wedge, allowing it to accelerate away at over 600 gees.
We can see from the diagram of HMS Minotaur and her LAC bays, in the back of EoH that the CLAC has a two rows of LAC bays running down each broadside, and each bay is only slightly larger than a single LAC. 25 bays in each row; so 50 bays per broadside, and 100 bays total. Each of her 100 LACs docks and launches from its own bay, on the CLAC's broadside. Pull in forward to dock, back out stern first to launch.
Each bay and/or LAC would need its own launch hardware as there's no way to move them between bays
[1] and there's no common hanger beyond the LAC bay. This isn't Battlestar Galactica's Viper hangers and launch tubes; it's more like the CLAC's broadsides is dotted with 100 separate little 1 LAC garages; each complete with garage door to close behind the LAC after it pulls in.
Fortunately pressers seem to be no larger than tractors; and we know a LAC carries several tractors. Heck, it's possible that presser is simple an alternate mode of the same tractor emitter.
So, I'm not sure if each bay has pressers to launch the docked LAC or if each LAC mounts its own pressers (and thus shoves itself backwards out of its bay). Still, the hardware doesn't appear to be large enough to cause any issues with having 100 sets to launch 100 LACs; especially since the presser beams don't need to move the LAC far; just enough to let the LAC switch to thrusters.
I can't see any reason a CLAC couldn't launch LACs simultaneously from both broadsides. Though it probably doesn't want to launch
all 100 at the exact same instant; that'd complicate the LAC's job of achieving sufficient mutual separation to light off their wedges. Spacing launches out a little is time and distance would actually lower to total time between first launch and final LAC engaging its wedge.
[1] Short of launching the LAC into space and having to return to a different bay