Topic Actions

Topic Search

Who is online

Users browsing this forum: Google [Bot] and 35 guests

Git your pencils out and design me a ship!

Join us in talking discussing all things Honor, including (but not limited to) tactics, favorite characters, and book discussions.
Re: Git your pencils out and design me a ship!
Post by Somtaaw   » Wed Aug 17, 2016 8:29 am

Somtaaw
Rear Admiral

Posts: 1204
Joined: Mon Sep 01, 2014 11:36 am
Location: Canada

Jonathan_S, found a couple snippets for you, for that notional Keyhole light of yours.

Ships as early as Honor of the Queen were rolling ship to present the belly (or roof) of their wedges to single sources of fire, in close to one vs one battles.

-Madrigal vs Thunder and Principality (the ambush of Grayson forces)
-Fearless vs Thunder (when Honor went on that final joyride where she planned to roll back down to engage with beams at under 50,000 km.
-McKeon rolled Prince Adrian to present the belly during the ambush that led to the capture and Hades adventure.

That's as far into my latest re-read I've gotten, looking for good bits of data relevant to threads. I can actually post the quotes if desired, but those are all very clear battles where the defender put their wedge in the way and tracked incoming missiles through their wedge.

Which actually makes the defensive points of Keyhole rather odd, it's loaded with fire control and active missile defenses but it seems to be mostly for offensive fire control rather than any real defensive need. Which means even that notional 300 kton cruiser wouldn't really need a Keyhole-Lite because defensively it doesn't need it, and offensively it's not supposed to have the mentality it can go fight a waller in a fair fight.
Top
Re: Git your pencils out and design me a ship!
Post by Jonathan_S   » Thu Aug 18, 2016 2:56 pm

Jonathan_S
Fleet Admiral

Posts: 8793
Joined: Fri Jun 24, 2011 2:01 pm
Location: Virginia, USA

Somtaaw wrote:Jonathan_S, found a couple snippets for you, for that notional Keyhole light of yours.

Ships as early as Honor of the Queen were rolling ship to present the belly (or roof) of their wedges to single sources of fire, in close to one vs one battles.

-Madrigal vs Thunder and Principality (the ambush of Grayson forces)
-Fearless vs Thunder (when Honor went on that final joyride where she planned to roll back down to engage with beams at under 50,000 km.
-McKeon rolled Prince Adrian to present the belly during the ambush that led to the capture and Hades adventure.

That's as far into my latest re-read I've gotten, looking for good bits of data relevant to threads. I can actually post the quotes if desired, but those are all very clear battles where the defender put their wedge in the way and tracked incoming missiles through their wedge.

Which actually makes the defensive points of Keyhole rather odd, it's loaded with fire control and active missile defenses but it seems to be mostly for offensive fire control rather than any real defensive need. Which means even that notional 300 kton cruiser wouldn't really need a Keyhole-Lite because defensively it doesn't need it, and offensively it's not supposed to have the mentality it can go fight a waller in a fair fight.
I know you can track missiles through your wedge; I didn't mean to say you couldn't. In fact HotQ explicitly says "We should be able to run a fair plot on Saladin with our belly radar, Rafe, but tracking missiles through the grav band will be difficult" The real question is whether it is as good as a Keyhole?

* Principality vs Troubadour. Energy range fight, except Principality has to use missiles due to her deficiency in energy mounts. Troubadour was snapping down to use her lasers, then rolling back to make a harder missile target. It appears she was restricted to using PDLCs to pick of missiles "popped up, fighting for a look-down shot through Troubadour’s upper sidewall".

* Fearless vs Thunder of God. Can't see missiles through the wedge beyond 500,000 km -- too close to use CMs.

* Prince Adrian vs Katana -- rolled belly against Katana yet defended with CMs. (Though I think McKeon made a minor tactical error here)


So yes, you can track missiles through your wedge but not as clearly, or as far out, as you can through a broadside. So a Keyhole still gives you a defensive advantage. Also we're told that you can't maintain a fire-control link through a wedge - so the CMs you launch while rolled seem like they'd be flying autonomous for the majority of their flight; which has to hurt their hit percentages. (There's where I think McKeon made a mistake. He should have held Prince Adrian broadside on for as long as possible to maximize her CM hit percentages against the pod based missiles - especially with the early CM launches that are attempting max range intercepts. She should still have time to roll away in the ~20 seconds it'll take the attacking missiles can cover the 147k km from extreme CM range to laserhead standoff range.

Also when rolled behind your wedge your PDLCs can't fire until the attacking missile pops over the 'horizon' of your wedge. And it'll do so within it's own standoff range - so the PDLC lacks it's normal range advantage. That means everything comes down to whether the PDLC can refine an accurate firing solution from the fuzzy position the through-wedge tracking handed off before the laserhead spots the ship, performs final alignment of its lasing rods and detonates.


Even a defensive-only keyhole seems to provide 3 advantages over simply rolling your ship (though obviously these have to be weighed against the trade-offs it takes to carry such a beast).
1. Longer ranged and more accurate tracking of inbound missiles than is possible through a wedge.
2. It allows CM fire control links to be maintained even while rolled - especially useful given the significantly increased range RMN CMs recently acquired (3 million km vs 1.5)
3. It carries a PDLC or two that can be used to pick off additional missiles before they clear the horizon of the wedge.

I don't know that this adds up to enough benifit to justify installing them now; but I still see reasons why RFC said Hemphill was "tinkering around with a considerably smaller, simpler platform whose primary function would be missile defense and which could probably be fitted to smaller combatants." They may not be worth it, yet, but there's some benefits to them.
Top
Re: Git your pencils out and design me a ship!
Post by Somtaaw   » Thu Aug 18, 2016 3:40 pm

Somtaaw
Rear Admiral

Posts: 1204
Joined: Mon Sep 01, 2014 11:36 am
Location: Canada

Jonathan_S wrote:
Somtaaw wrote:
-Madrigal vs Thunder and Principality (the ambush of Grayson forces)


* Principality vs Troubadour. Energy range fight, except Principality has to use missiles due to her deficiency in energy mounts. Troubadour was snapping down to use her lasers, then rolling back to make a harder missile target. It appears she was restricted to using PDLCs to pick of missiles "popped up, fighting for a look-down shot through Troubadour’s upper sidewall".


That was a different battle, the one I was referring to, was the original ambush that lead to the deaths of Admirals Yanakov and Courvosier. Courvosier was aboard the Madrigal, and was using her sensors to help the Grayson force intercept the Masadan raiding fleet.


Jonathan_S wrote:And because she rolled ship so early, had that difficulty intercepting the Havenite laserheads while defending the whole fleet.
So yes, you can track missiles through your wedge but not as clearly, or as far out, as you can through a broadside. So a Keyhole still gives you a defensive advantage. Also we're told that you can't maintain a fire-control link through a wedge - so the CMs you launch while rolled seem like they'd be flying autonomous for the majority of their flight; which has to hurt their hit percentages. (There's where I think McKeon made a mistake. He should have held Prince Adrian broadside on for as long as possible to maximize her CM hit percentages against the pod based missiles - especially with the early CM launches that are attempting max range intercepts. She should still have time to roll away in the ~20 seconds it'll take the attacking missiles can cover the 147k km from extreme CM range to laserhead standoff range.

Also when rolled behind your wedge your PDLCs can't fire until the attacking missile pops over the 'horizon' of your wedge. And it'll do so within it's own standoff range - so the PDLC lacks it's normal range advantage. That means everything comes down to whether the PDLC can refine an accurate firing solution from the fuzzy position the through-wedge tracking handed off before the laserhead spots the ship, performs final alignment of its lasing rods and detonates.


Prior to the return of pod combat, it does appear that rolling ship was better. There's a few occasions (which I don't currently have quotes for), where ships chose to continue combat with chaser only armaments rather than presenting broadsides and "giving the enemy a better angle" or something like that. You may have sacrificed the pinpoint accuracy that Manticore prizes so, but you gained more than you lost.

Rolling ship too late, such as after you've launched a few salvo's of counter missiles reduces your ability to move from "last known position relative to wedge" to almost non-existant. You would be able to displace at most a few meters, which is probably not enough to throw off shots compared to forcing even SDM missiles to come streaking in totally blind, and having to react to ship position in seconds. Which means the PDLC's have that slight edge that even a fuzzy idea of where the missile should be is better than zero idea where the ship is.

But that's all pre-pod combat, with pod missile saturation the defense side literally cannot afford to sacrifice those extra launches to keep the incoming missiles blind.


if a stripped down Keyhole can take the place of the older decoys, even the light cruiser Fearless carried six 50-ton decoys. So it's possible if you exchanged 100% of tethered decoys, and relying purely on the shuttle bay (or tube) launched Ghost Rider derived decoys, you could squeeze a 150-200t "Keyhole-Lite" onto each broadside of the 88 kton CL Fearless and you wouldn't have changed the ship much.

Now obviously due to ship size creep, something as old as a Courageous class at 88 ktons compared to the more modern 276 kton Kamerlings, means equal decoy enlargement means you could be dropping anywhere upto 450 tons per broadside for a Keyhole-Lite without even touching your offensive broadsides.

From the pearls,
And whereas the original Keyhole had only extremely limited anti-missiles self-defense capabilities, Keyhole-Two (in part because it's so much more valuable) has several point defense clusters added to the rest of its size and energy budget.


So as long as these notional Keyhole-Lite are purely countermissile fire control, and maybe a Ghost Rider drone style fusion plant, and maybe even reduce the limited active defenses of a Keyhole-I, you could reduce a Keyhole II's tonnage down from 20 ktons down to perhaps 2 or 3 ktons. A Ghost Rider spy drone alone is about 100 tons, evidence from Shadows of Saganami when one was handlaunched in Monica. The extra fire control, more sensors, and maybe some EW emitters would increase that, and increase fusion plant size a little to keep it all powered.

That wouldn't require much butchering of even existing ship broadsides for a defensive Lite Keyhole... however, as I observed above, to get the Keyhole-Lite, you'd have to completely eliminate the traditional broadside tethered decoys and shift entirely to deployed drones. All ships carried those, and once the RMN got Ghost Rider, even before they developed Lorelei they had free-flying GR decoys flitting about.
Top
Re: Git your pencils out and design me a ship!
Post by Relax   » Thu Aug 18, 2016 6:21 pm

Relax
Fleet Admiral

Posts: 3214
Joined: Tue Oct 27, 2009 7:18 pm

Keyholes are not 20ktons. They are 120,000+++ according to RFC.

Why? Because of the SAG-C/BCL debate where RFC essentially agreed, without saying he agreed, that a SAG-C @480,000 tons and all of its sunk cost makes much more sense to increase it to ~~~500,000 tons with far better defenses due to the rolled wedge alone.

To make the BCL relevant, RFC increased the Keyhole mass by a factor of ~~5, effectively making a keyhole 'lite' impossible from a dedicated platform perspective.

Light ships have Hermes buoys that can send video and voice, via FTL and EMS, but can't send data to a missile... Oh wait, they can as was done in BOMA... Same goes for RD's. The only "problem" is the software protocol handling with tracking.
_________
Tally Ho!
Relax
Top
Re: Git your pencils out and design me a ship!
Post by Somtaaw   » Thu Aug 18, 2016 6:42 pm

Somtaaw
Rear Admiral

Posts: 1204
Joined: Mon Sep 01, 2014 11:36 am
Location: Canada

Relax wrote:Keyholes are not 20ktons. They are 120,000+++ according to RFC.



Child, you need to learn to read before jumping on your high horse, closing your knight visor and charging down the idiots with your righteous intelligence. Maybe next time you could actually read the actual post, maybe even twice to be sure you actually address what's being discussed...

Namely, Jonathon and myself have been going back and forth for a few pages now, over the notional stripped-down Keyhole-Lite that even RFC has stated here and I quote
Indeed, our good friend Sonja Hemphill is currently tinkering around with a considerably smaller, simpler platform whose primary function would be missile defense and which could probably be fitted to smaller combatants.


Bolded, and size enhanced the emphasis, because you clearly have reading problems, and need things to be pointed out to you in great big letters sir.

And for the size, do you have a specific source on Keyhole's specifically NOT being 20 ktons? Because from the pearls, Keyhole II are around the size of a LAC. LACs, even Shrikes are upto around 20 ktons, ergo Keyhole II is 20ktons.
Top
Re: Git your pencils out and design me a ship!
Post by Jonathan_S   » Thu Aug 18, 2016 11:00 pm

Jonathan_S
Fleet Admiral

Posts: 8793
Joined: Fri Jun 24, 2011 2:01 pm
Location: Virginia, USA

Somtaaw wrote:
Relax wrote:Keyholes are not 20ktons. They are 120,000+++ according to RFC.



Child, you need to learn to read before jumping on your high horse, closing your knight visor and charging down the idiots with your righteous intelligence. Maybe next time you could actually read the actual post, maybe even twice to be sure you actually address what's being discussed...

Namely, Jonathon and myself have been going back and forth for a few pages now, over the notional stripped-down Keyhole-Lite that even RFC has stated here and I quote
Indeed, our good friend Sonja Hemphill is currently tinkering around with a considerably smaller, simpler platform whose primary function would be missile defense and which could probably be fitted to smaller combatants.


Bolded, and size enhanced the emphasis, because you clearly have reading problems, and need things to be pointed out to you in great big letters sir.

And for the size, do you have a specific source on Keyhole's specifically NOT being 20 ktons? Because from the pearls, Keyhole II are around the size of a LAC. LACs, even Shrikes are upto around 20 ktons, ergo Keyhole II is 20ktons.

I don't know about 120,000 ktons. But the infodump The nature of Manticore's battlecruisers says, in part, While the final (or, at least, currently final) generation of Keyhole-One is somewhere around 65,000 tons (or darned near the size of a prewar destroyer), Keyhole-Two is even larger..

It was the original original design for the Keyhole I platform that was "about the size of a LAC" which was "more fully developed" into the 65 kton version before being deployed on Nikes. (It's unclear if that original original Keyhole I ever went into deployment on the Invicutus class or if it was a testbed only that gained it's bells and whistles (and tonnage) before active deployment.)

So Relax is correct to point out that the Keyholes we know aren't 20 ktons. Personally I doubt you could get even a defense-only design, that was effective, down to 2 -3 ktons. I think you'd be doing very well to trim it back to even 40% of the original 20k proposal - which would still put it closer 8-9 ktons.
Top
Re: Git your pencils out and design me a ship!
Post by Vince   » Thu Aug 18, 2016 11:05 pm

Vince
Vice Admiral

Posts: 1574
Joined: Fri Apr 09, 2010 11:43 pm

Somtaaw wrote:
Relax wrote:Keyholes are not 20ktons. They are 120,000+++ according to RFC.



Child, you need to learn to read before jumping on your high horse, closing your knight visor and charging down the idiots with your righteous intelligence. Maybe next time you could actually read the actual post, maybe even twice to be sure you actually address what's being discussed...

Namely, Jonathon and myself have been going back and forth for a few pages now, over the notional stripped-down Keyhole-Lite that even RFC has stated here and I quote
Indeed, our good friend Sonja Hemphill is currently tinkering around with a considerably smaller, simpler platform whose primary function would be missile defense and which could probably be fitted to smaller combatants.


Bolded, and size enhanced the emphasis, because you clearly have reading problems, and need things to be pointed out to you in great big letters sir.

And for the size, do you have a specific source on Keyhole's specifically NOT being 20 ktons? Because from the pearls, Keyhole II are around the size of a LAC. LACs, even Shrikes are upto around 20 ktons, ergo Keyhole II is 20ktons.

For the size of various Keyholes, from the Pearls:
The nature of Manticore's battlecruisers wrote: Keyhole-One was originally envisioned solely as a telemetry relay platform. Think of it being something along the lines of a submarine raising its radio mast to transmit. The idea was to get a control platform outside the boundaries of the wedge in order to allow a ship's fire control to establish and maintain telemetry links around the interfering barrier of the wedge. Moreover, the original concept concentrated almost entirely on considerations of improved offensive fire control, which did include the idea of giving greater flexibility to target management. In particular, one of the very early concepts was to facilitate "hand-off" between ships, allowing the ship with the best "visibility" to manage fire from her consorts, but did not include any great concern with managing counter-missile fire, extending sensor reach, or making any direct contribution to the mounting ship's close-in defenses.

As the concept began working its way through development, however, it began to evolve. Initially, the idea had been that each ship would carry a large number of relatively small, cheap, expendable communications platforms. They would be outside the wedge and the side walls, and thus vulnerable, and what they were expected to do was relatively simple. The RMN's remote sensor platform capability was already good enough that the emphasis was on a cheap platform designed purely to communicate with outgoing missiles.

In the development process, BuWeaps came to consider additional missions Keyhole might be expanded to include. One of the very first was to include additional telemetry links for counter-missiles. Another early contender was to use the new system to expand a ship's "onboard" sensor perimeter, giving it better "situational awareness" in its own area, regardless of where the remote sensor platforms might be deployed. As its mission and capacity grew, Keyhole became a steadily more sophisticated and capable — and thus larger and less expendable — platform. As it incorporated its own sensor suite and expanded its communications, it became increasingly valuable (in both the tactical and the logistical senses), which made it only logical to fit it with its own point defense. It was made as stealthy as something radiating as powerfully as it did could be made, and it was equipped with its own rudimentary ECM in order to make it more difficult to localize it and destroy it. And, of course, each incremental increase in capability brought with it its own incremental increase in size and cost. You can, if you will, think of this as setting out to design the F-16, or even the A-10, and ending up with the F-15. Every step along the way made absolute, demonstrable, unquestionable good military sense, and the final product was worth every penny of investment, and yet what emerged at the end of the developmental process had changed so much in degree that it had ended up changed in kind, as well. It was, effectively, a completely different animal from the initial concept.

So, at the end of the development process (I'm speaking here of Keyhole-One development), the original cheap, expendable, single-function telemetry link had evolved into a highly capable platform which was an integral part of the mounting ship's sensor suite, provided a much more capable communications node then had originally been envisioned, was stealthy and hard for any opponent to lock up for offensive fire control, and which possessed sufficient onboard point defense capability to not simply defend itself but offer a significant increase in the mounting ship's close-in defenses, as well. The platform itself is stuffed full of essential equipment and hardware, but probably at least a quarter of Keyhole-One's capabilities depend on computer support aboard, and (especially) power generation from, the mounting ship.

The original Keyhole-One platform was about the size of a LAC. The more fully developed Keyhole-One platform carried aboard units like the Nike-class battlecruisers is substantially larger, and fitting a ship to carry it costs quite a bit of potential broadside armament space. It also presents some armoring difficulties, since the platform itself has to be armored when it is tractored into its bay on the exterior of the mounting ship, and the bay itself has to be armored in order to protect the ship when the platform is deployed. Because of those considerations, at the moment, no Keyhole-capable ship currently carries more than one platform in each broadside. This would give a squadron of six ships 12 Keyholes, and, especially given the platform's elusiveness and self-defending capability, the RMN regards this as sufficient to guarantee reasonable survivability through redundancy.

Keyhole-Two is another can of worms entirely. First, the platforms themselves are substantially larger. While the final (or, at least, currently final) generation of Keyhole-One is somewhere around 65,000 tons (or darned near the size of a prewar destroyer), Keyhole-Two is even larger. This is because in addition to the requirement that it must retain its light-speed telemetry links for counter-missiles and non-Apollo shipkillers, it must also fit in the dedicated FTL coms used to communicate with the Apollo control missiles. In other words, a Keyhole-Two platform has to be "bilingual," with the capability to perform its Apollo control function in addition to all of the standard Keyhole-One functions, and this inevitably drives size upward. It is also even more heavily defended, since each platform is individually bigger (and more expensive), represents a larger increment of the mounting ship's capabilities, and (because of its size and emission signature) is a less elusive target. The power budget is also substantially greater. A very large percentage of the computer support carried on board by Keyhole-One has to be located inside the mounting ship, which eats into the ship's internal volume. Additional power generation and transmitting equipment is also necessary, which eats even further into internal volume.
Boldface and underlined text is my emphasis.
-------------------------------------------------------------
History does not repeat itself so much as it echoes.
Top
Re: Git your pencils out and design me a ship!
Post by Relax   » Fri Aug 19, 2016 1:39 am

Relax
Fleet Admiral

Posts: 3214
Joined: Tue Oct 27, 2009 7:18 pm

Vince wrote:For the size of various Keyholes, from the Pearls:
The nature of Manticore's battlecruisers wrote: A very large percentage of the computer support carried on board by Keyhole-One has to be located inside the mounting ship, which eats into the ship's internal volume. Additional power generation and transmitting equipment is also necessary, which eats even further into internal volume.


Add in a LAC can be anywhere in AAC of 20kton(RMN) and +30kton(RHN). RFC said larger. Then add in the above. Ended up at 65,000 + internal. Call it 70,000tons minimum.

KHII is substantially larger ~120,000+
Apollo missile is "larger" call it roughly 150ton? Half is FTL? If a lowly SAG-C has 128 control channels, a BCL must have ~200 then a SDP must have at minimum 400 and I would lean towards 800. So, 400 is 30,000 tons and 800 FTL transceivers would be 60,000tons on the upper end IMO. you have 800 of these transceivers on a KHII... that is roughly ~120,000tons

Neighhh. High horse ridden hard. :lol:
_________
Tally Ho!
Relax
Top
Re: Git your pencils out and design me a ship!
Post by Somtaaw   » Fri Aug 19, 2016 8:18 am

Somtaaw
Rear Admiral

Posts: 1204
Joined: Mon Sep 01, 2014 11:36 am
Location: Canada

Jonathan_S wrote:
Somtaaw wrote:And for the size, do you have a specific source on Keyhole's specifically NOT being 20 ktons? Because from the pearls, Keyhole II are around the size of a LAC. LACs, even Shrikes are upto around 20 ktons, ergo Keyhole II is 20ktons.

I don't know about 120,000 ktons. But the infodump The nature of Manticore's battlecruisers says, in part, While the final (or, at least, currently final) generation of Keyhole-One is somewhere around 65,000 tons (or darned near the size of a prewar destroyer), Keyhole-Two is even larger..

It was the original original design for the Keyhole I platform that was "about the size of a LAC" which was "more fully developed" into the 65 kton version before being deployed on Nikes. (It's unclear if that original original Keyhole I ever went into deployment on the Invicutus class or if it was a testbed only that gained it's bells and whistles (and tonnage) before active deployment.)

So Relax is correct to point out that the Keyholes we know aren't 20 ktons. Personally I doubt you could get even a defense-only design, that was effective, down to 2 -3 ktons. I think you'd be doing very well to trim it back to even 40% of the original 20k proposal - which would still put it closer 8-9 ktons.


Thank you Jon, when I looked on Pearls for Keyhole, I only popped up with 3 links containing the word, and not one of them placed the tonnage at 120 ktons. And one normally wouldn't search "battlecruiser" when one is looking for Keyhole information, which would explain why I could not find the information Relax jumped hard on.


Although, Relax.... if you chilled the hell out, and stopped knee-jerk telling everyone how dumb we are, I might have been more inclined to reasonably discuss with you. But your record isn't all that great for reasoned debate and discussion, so anything you say I require actual linked sources, before I take a word you say as "this is how it is", I'm sorry but that's just how I see you.


So, the notional possible Keyhole defensive, going into that below 65 kton, original Keyhole specifically for lighter than battlecruisers... nope can't see even Hemphill really pulling that miniaturization off for at least four or five years. Not while Keyhole got size jumped from the original 20 ktons to a 65 kton beast and Keyhole II's having spiked to over 120.

The minimum it has to carry to be of use to smaller ships, is sensors & dedicated CM fire control, defensive jammers, and internal power so battle damage can't knock out it's beamed power source. You could strip out the inbuilt Keyhole's Ghost Rider derived impeller drive, the buckler, the PDLC's and other defense features of Keyhole II's, and all fire control for offensive fire (if there's actually a difference between shipkiller and CM fire control links).

the power source alone has to be at least as good as a Ghost Rider drone, the jammer's going to larger and more robust than those mounted on Dazzlers, and we can't really ballpark how big and massy the fire control would be, so it'd have to be minimum the size of an all-up pinnace.
Top
Re: Git your pencils out and design me a ship!
Post by George J. Smith   » Fri Aug 19, 2016 8:51 am

George J. Smith
Commodore

Posts: 873
Joined: Tue Feb 19, 2013 7:48 am
Location: Ross-on-Wye UK

Design is one thing, building is another.

How long is it going to be before Manticore can upgrade the Haven Bolthole yards to turn out Manticore tech, and then start thinking in terms of what size Keyhole I/II & Light will be. IIRC Haven has not yet been able to match the miniaturisation required to produce the presnt Manticoran tech, never mind any future miniaturisation that was in the design pipeline.
.
T&R
GJS

A man should live forever, or die in the attempt
Spider Robinson Callahan's Crosstime Saloon (1977) A voice is heard in Ramah
Top

Return to Honorverse