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Ghost Rider Compesators | |
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by Lord Skimper » Fri Jul 08, 2016 6:46 am | |
Lord Skimper
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Why aren't ghost rider compensators used on ships?
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Just don't ask what is in the protein bars. |
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Re: Ghost Rider Compesators | |
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by Duckk » Fri Jul 08, 2016 6:51 am | |
Duckk
Posts: 4200
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...What? There's no such thing as a "Ghost Rider compensator".
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Shields at 50%, taunting at 100%! - Tom Pope |
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Re: Ghost Rider Compesators | |
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by Somtaaw » Fri Jul 08, 2016 8:10 am | |
Somtaaw
Posts: 1204
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I'm not sure if this is a bad thing, or a good thing I might actually be learning to "speak" Skimper level of stupid...
but I think his twisted mind has fixated on how fast Ghost Rider drones can accelerate and wants to know why ships don't go that fast. Ignoring the minor fact that Ghost Rider drones either aren't compensated at all, or compensated very very little to allow them acceleration in the thousands rather than the hundreds ships can handle. |
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Re: Ghost Rider Compesators | |
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by Weird Harold » Fri Jul 08, 2016 12:37 pm | |
Weird Harold
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Not to mention the smaller the volume compensated for inertia, the higher the acceleration. Also, the greater the ratio of compensated volume to available "gravity sink" (i.e. the wedge) the higher the permissible acceleration. If a ship and a drone have the same compensator technology, the drone is going to be faster by at least an order of magnitude -- or two. .
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Re: Ghost Rider Compesators | |
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by Jonathan_S » Fri Jul 08, 2016 2:17 pm | |
Jonathan_S
Posts: 8793
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Well almost certainly not two, drones are quick compared to ships, but they're not 50,000+g quick. One order of magnitude quicker (~5,000g) is about what they can do. (warning, pointless and semi-lengthy side tangent) Though the current mass / acceleration curves (to the extent that David has publicly shared details of them or data points along them) don't yet show that. There would need to be one or two additional sharp inflection points as you got into very low masses. The table from More Than Honor has the lowest category as being "0-79,999 tons" and 550g. (And my line fitting attempts seem to show that the acceleration listed in that table is for the low end of each mass range. In this case that a theoretical 0 ton ship could have done 550g with old-style compensators). Also best guess in that new compensators are mostly a straight percentage improvement, so that 0 ton ship would now (with some of the best performance seen, 155% of old-style) be good for 852g - still far short of what we've seen drones do. But since manned starships aren't that small there's no pressing reason for David to share (or even develop) a cohesive mass/accel curve for such tiny (<10,000 ton) masses. |
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Re: Ghost Rider Compesators | |
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by Somtaaw » Fri Jul 08, 2016 8:07 pm | |
Somtaaw
Posts: 1204
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Ok, so unless anyone has a better (or more specific datum anyways), I've found a few passages in Shadow of Freedom regarding Ghost Rider drones.
So the, more or less latest, Ghost Rider drones travelled almost 200 million kilometers in just under 24 minutes, and were down to under 96 light-seconds from Mobius. I'm sure exactly how fast that makes a Ghost Rider drone, but Sag-C's had a speed of 730 grav's, and the drones did the trip something like 10 times faster than the ships could have, and did it without detection. Rough mass on Ghost Rider drones has to be around the same for capital MDM's at the top end, so a max of 1000 tons or so, compared to the Saganami's 483 ktons. Now totally excluding the minor issue, that I think David already said small one-man "snubfighters" ala Star Wars aren't possible, 1000 tons could make for one helluva fighter, that could pull even more acceleration than even LAC's or pinnaces, but still less than that of Ghost Rider drones.... if you ignore David saying no anyways, which Skimper seems to have problems with. But out of curiosity, what is the acceleration those Ghost Rider drones pulled at Mobius? |
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Re: Ghost Rider Compesators | |
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by kzt » Fri Jul 08, 2016 8:14 pm | |
kzt
Posts: 11360
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IIRC, they can do about 10,000g. They might be running without a compensator, just directly handing the acceleration. Don't know.
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Re: Ghost Rider Compesators | |
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by Weird Harold » Fri Jul 08, 2016 9:08 pm | |
Weird Harold
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I've forgotten. What happens if you exceed a compensator's top acceleration? Other than compensator failure, that is. Is failure the only option if you accelerate at 101% of your compensator's capacity? .
. . Answers! I got lots of answers! (Now if I could just find the right questions.) |
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Re: Ghost Rider Compesators | |
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by kzt » Fri Jul 08, 2016 9:46 pm | |
kzt
Posts: 11360
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You get instantaneously exposed to the full acceleration. In the Honorverse that seems to not even bother the sewage lines, buts really bad for people. |
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Re: Ghost Rider Compesators | |
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by Jonathan_S » Fri Jul 08, 2016 9:49 pm | |
Jonathan_S
Posts: 8793
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There's one passage from ART which says
Then I found this, but there's no indication that's their maximum accel
I also did a little number crunching on your quote from SoF and it looks like they must have been in excess of 16,000 gravities. From the Quentin Saint-James numbers it appears they carried roughly 290 km/s with them from hyper - which adds up to ~450,000 km compared to starting at zero. 26 minutes at 15,900g would give you 10.54 LM, or 189,601,776 km. Factor in the initial velocity would alter that to 10.56 LM (190,054,176 km). Basically the numbers from the quote. (And incidental 0.81c) But remember the drones had to be even quicker than that because they'd already reached turnover and started decelerating. Though the claim that they were going for a zero/zero intercept; and the above calcs had them acceperating 86% of the way there; not the way to achieve zero/zero. |
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