Topic Actions

Topic Search

Who is online

Users browsing this forum: Google [Bot] and 47 guests

The cruiser future in the RMN - another go

Join us in talking discussing all things Honor, including (but not limited to) tactics, favorite characters, and book discussions.
Re: The cruiser future in the RMN - another go
Post by Jonathan_S   » Thu Jun 25, 2015 9:03 pm

Jonathan_S
Fleet Admiral

Posts: 9099
Joined: Fri Jun 24, 2011 2:01 pm
Location: Virginia, USA

kzt wrote:
Jonathan_S wrote:Going back to the AAC scenario, at 150 million km the ballistic phase for a full up MDM is at least 520 seconds (more if the target maneuvers clear of the straight line path). But in that time even a current Havenite SD can likely displace less than a million km. That's apparently enough to get clear of the targeting basket for the missile's terminal seeker; but only because the control loop is too laggy at that range to properly cue the missile. At ranges you'd actually used non-Apollo MDMs, less than 1/2 that range, that's much less of an issue.


I don't accept that any (non-Apollo) ballistic shot has to have crap accuracy just because one insanely long-ranged one would.

You have to realize that Mk-23s can run with a ballistic component too. Which allows you to plot a ballistic segment that won't allow the target to exit the seeker FoV, but is kind of close. This inherently means that a DDM MUST have a ballistic segment that allows the target to exit the seeker FoV.

So the Mk-23 ship just obliterates that Mk-16 ship without taking effective return fire.
I'm not sure if matters if the enemy gets out of the missile's FOV during it's balisic phase as long as the launching ship is close enough to cue it back onto target during the up to 3 minutes the terminal stage will run.

Out past, say, 45-50 million km that seems to become iffy (unless you have Apollo). Ballistic seems (to me) to be less important than total range.


However the Mk-23 ship does have a time-to-target advantage over the Mk-16 one. If it can achieve a mission kill (or better) in those few minutes after the Mk-23s hit but before the retaliatory Mk16s go into autonomous terminal guidance mode then it doesn't really matter how well the '16s would have done - they're lost and blind. (OTOH the '23 ship has the largest time advantage at the longest ranges - where it's accuracy sucks...)
Top
Re: The cruiser future in the RMN - another go
Post by Jonathan_S   » Thu Jun 25, 2015 9:11 pm

Jonathan_S
Fleet Admiral

Posts: 9099
Joined: Fri Jun 24, 2011 2:01 pm
Location: Virginia, USA

JeffEngel wrote:I think that RFC may have stated the rationale for the BC(L) over the BC(P) poorly. The battlecruiser is meant to be able to survive distant encounters with wallers; avoid serious encounters with them; hunt down cruisers and blow them away with ease and without being threatened seriously by them; and to mop up system defenders that aren't waller-equivalent.

To do that, having far more firepower than it takes to blow away cruisers starts to become more than the mission requires, and if you buy that at the cost of being able to laugh off what cruisers can do to you, you're not suiting the BC role anymore, at least, not that RMN conception of it. That's the issue with a BC(P): a Saganami-C could put a hurt on it; distant encounters with a waller can easily toast a BC(P); and the need to recover pods to carry on raiding means that the BC(P) cannot just run off as need be. Duration of fire really hasn't got much to do with it - mostly it is about the relevant necessary toughness and dangerousness. Any podlayer is going to be more dangerous than a BC needs to be, and any BC-size-range podlayer is going to be less tough and able to move right along freely and carry on raiding, as a BC is meant to.
I'd expand on that and say that BC's have historically be used to raid into secondary or tertiary star systems of the enemy.

But now that means you run the risk of getting hit with a distant ambush from system-defense pods that your recon drones weren't able to spot in time.

Compared to a BC(P) a BC(L)'s toughness and distributed weapons give it a better chance of surviving, and then completing the raiding mission (or at least fighting its way back out if a mobile component of the ambush shows up).
In contrast the BC(P) is too likely to lose its entire offensive power, and possibly just be destroyed, from a couple unlucky hits.

The RMN appears to have wanted to retain that BC raiding ability and not be forced to send SD(P)s whenever there was a chance of pod based system defenses (which is rapidly becoming universal)
Top
Re: The cruiser future in the RMN - another go
Post by Relax   » Thu Jun 25, 2015 10:41 pm

Relax
Fleet Admiral

Posts: 3230
Joined: Tue Oct 27, 2009 7:18 pm

Should note:

MDM: 70Mkm 540s
DDM: 70Mkm 840s
Delta ~5 minutes

EDIT: Doh, just saw John did this calc up thread. :P

So, for a BCL to survive against a MDM BCP, the BCL captain must commence firing 5 minutes before the BCP. It gets much worse if one adds a ballistic component after the second stage of the MDM.

And no, a BCP will not lose its entire offensive capability if Buships simply uses a different dispenser method which has been covered multiple times on this site. I personally never understood why Buships would only have ONE hammerhead with pod doors. Forcing a ship to flip to fire its weapons when they have tractors able to move pods around seems ridiculous to me.
_________
Tally Ho!
Relax
Top
Re: The cruiser future in the RMN - another go
Post by kzt   » Thu Jun 25, 2015 11:10 pm

kzt
Fleet Admiral

Posts: 11360
Joined: Sun Jan 10, 2010 8:18 pm
Location: Albuquerque, NM

Relax wrote:And no, a BCP will not lose its entire offensive capability if Buships simply uses a different dispenser method which has been covered multiple times on this site. I personally never understood why Buships would only have ONE hammerhead with pod doors. Forcing a ship to flip to fire its weapons when they have tractors able to move pods around seems ridiculous to me.

Unless you are being commanded by a admiral smoking plot, you will have already deployed most if not all of the pods you will use prior to you shooting any missiles. Then you will fire them in a series of dense salvos designed to all arrive at the same time, plus or minus about 5 seconds. And you will do this timing it so that any return fire will require a sufficient ballistic window during which you can maneuver out of the seeker FoV.

As you can assure minimal effective return fire you also can have another full salvo or three already deployed in case ~800 Mk-23s arriving in a wave over 10 seconds isn't sufficient. Which it certainly should be.
Top
Re: The cruiser future in the RMN - another go
Post by Relax   » Thu Jun 25, 2015 11:24 pm

Relax
Fleet Admiral

Posts: 3230
Joined: Tue Oct 27, 2009 7:18 pm

kzt wrote:
Relax wrote:And no, a BCP will not lose its entire offensive capability if Buships simply uses a different dispenser method which has been covered multiple times on this site. I personally never understood why Buships would only have ONE hammerhead with pod doors. Forcing a ship to flip to fire its weapons when they have tractors able to move pods around seems ridiculous to me.

Unless you are being commanded by a admiral smoking plot, you will have already deployed most if not all of the pods you will use prior to you shooting any missiles. Then you will fire them in a series of dense salvos designed to all arrive at the same time, plus or minus about 5 seconds. And you will do this timing it so that any return fire will require a sufficient ballistic window during which you can maneuver out of the seeker FoV.

As you can assure minimal effective return fire you also can have another full salvo or three already deployed in case ~800 Mk-23s arriving in a wave over 10 seconds isn't sufficient. Which it certainly should be.


You forgot: Magic beans BCL's get 600:1 hit ratio, so your 800 got at most 2 hits... BCP's who also get keyhole, do not get magic bean plants.
_________
Tally Ho!
Relax
Top
Re: The cruiser future in the RMN - another go
Post by SharkHunter   » Fri Jun 26, 2015 6:39 am

SharkHunter
Vice Admiral

Posts: 1608
Joined: Fri Nov 14, 2014 3:53 pm
Location: Independence, Missouri

I think a better question might use HotQ as a yardstick. What would it take for a current generation CA with a top notch commander to take out a 2x ship one generation ago with a top notch commander? That's effectively what Honor had at Yeltsin, except that PNS/Saladin/Thunder of God wasn't being captained by Alfreo Yu; it was led incompetently by a Masadan command crew. Otherwise, barring a golden BB she would have lost.

That argues for Mark-16G class DDMs, with as many racked pods on the outside of the ship as possible and many control links. It also argues for heavy CM and PDLC deployment -- and not much energy weapons fire. That prevents the bigger ship from closing without sustaining heavy damage, and keeps the cruiser in the game longer. Hence my estimation that the CL of the future is Star Knight size, and the CA is Sag-C or slightly larger.

Either of those two ships along with 2 Roland(s) (equivalent to CA- Fearless, Troubadour and Apollo) would be a fierce set of combatants for any likely raiding-class force mix, whether offensively or defensively.
---------------------
All my posts are YMMV, IMHO, and welcoming polite discussion, extension, and rebuttal. This is the HonorVerse, after all
Top
Re: The cruiser future in the RMN - another go
Post by Somtaaw   » Fri Jun 26, 2015 7:33 am

Somtaaw
Rear Admiral

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

Jonathan_S wrote:Compared to a BC(P) a BC(L)'s toughness and distributed weapons give it a better chance of surviving, and then completing the raiding mission (or at least fighting its way back out if a mobile component of the ambush shows up).
In contrast the BC(P) is too likely to lose its entire offensive power, and possibly just be destroyed, from a couple unlucky hits.


First, and even second generation pod-whatevers only utilized the last ~30% of the core hull for their pod rails. This was take advantage of the pod rolling, without sacrificing too much of the core hull integrity.

Due to the mechanics of how the wedge works, putting your pod rails facing forwards, not only would you potentially be ram damaging your own pods each roll. But the throat of the wedge is larger than the skirt, so you'd be increasing the odds to hit the doors, or even a golden BB hit straight down the rails (ie: 100% destruction of pods).

Early generation podnoughts, and BC(P), were also designed when only Manticore had that technology at all. And second-gen were designed approximately the same time as Haven revealed the same technology (which was just imitation tech, rather than true innovation).

Even with third-gen Medusa-B's, I think have increased pod storage to upto 50% of their hull, it's still safer & better to only deploy out the rear, than risk a golden BB down the throat taking out a high percentage of pods.
Top
Re: The cruiser future in the RMN - another go
Post by Theemile   » Fri Jun 26, 2015 7:39 am

Theemile
Fleet Admiral

Posts: 5380
Joined: Sat Feb 27, 2010 5:50 pm
Location: All over the Place - Now Serving Dublin, OH

SharkHunter wrote:I think a better question might use HotQ as a yardstick. What would it take for a current generation CA with a top notch commander to take out a 2x ship one generation ago with a top notch commander? That's effectively what Honor had at Yeltsin, except that PNS/Saladin/Thunder of God wasn't being captained by Alfreo Yu; it was led incompetently by a Masadan command crew. Otherwise, barring a golden BB she would have lost.

That argues for Mark-16G class DDMs, with as many racked pods on the outside of the ship as possible and many control links. It also argues for heavy CM and PDLC deployment -- and not much energy weapons fire. That prevents the bigger ship from closing without sustaining heavy damage, and keeps the cruiser in the game longer. Hence my estimation that the CL of the future is Star Knight size, and the CA is Sag-C or slightly larger.

Either of those two ships along with 2 Roland(s) (equivalent to CA- Fearless, Troubadour and Apollo) would be a fierce set of combatants for any likely raiding-class force mix, whether offensively or defensively.


In 1905, a BC was considered the equal of about 4 CAs of the same tech/generation, So the Fearless should have been a painful speedbump to the Thunder of God. A CA at that time should be at parity with 3-4 CL/DDs of the same tech. Depending on the Navy, a CL is usually ~125% of a DD, but is occasionally the equal of 2 DDs.

Honor's entire squadron at Yeltsin (1CA,1CL,2DD) should be the equal to 1/2 a 1st flight Reliant BC. On paper, against a modern Havenite BC and CL, they shouldn't have had a chance, even if they were concentrated.

I'm not certain how future ratios will stand, but 2 Sag-C and 2 Rolands may be parity for a Nike, Though a Nike's deep mags mean it can stay in the fight far longer than the lighter ships.
******
RFC said "refitting a Beowulfan SD to Manticoran standards would be just as difficult as refitting a standard SLN SD to those standards. In other words, it would be cheaper and faster to build new ships."
Top
Re: The cruiser future in the RMN - another go
Post by Bill Woods   » Fri Jun 26, 2015 11:23 am

Bill Woods
Captain of the List

Posts: 571
Joined: Tue Jun 11, 2013 12:39 pm

Relax wrote:Should note:

MDM: 70Mkm 540s
DDM: 70Mkm 840s
Delta ~5 minutes
A touch less. From a standing start,

1 * 3 min @ 46k gee: _7.4 e9m, _79 e6m/s (0.26 c), _3.0 min
2 * 3 min @ 46k gee: 30.0 e9m, 148 e6m/s (0.49 c), _6.3 min
3 * 3 min @ 46k gee: 69.5 e9m, 201 e6m/s (0.67 c), 10.0 min

So to match the range of the 3DM, the ballistic phase for the 2DM is 39.5 e9m, taking 8.3 min, for a total flight time of 14.6 min.

Shooting at a target 150 e9m away,
the 3DM takes 19.1 min with a ballistic phase of 9.1 min.
The 2DM takes 31.6 min with a ballistic phase of 25.3 min.
----
Imagined conversation:
Admiral [noting yet another Manty tech surprise]:
XO, what's the budget for the ONI?
Vice Admiral: I don't recall exactly, sir. Several billion quatloos.
Admiral: ... What do you suppose they did with all that money?
Top
Re: The cruiser future in the RMN - another go
Post by Relax   » Fri Jun 26, 2015 5:05 pm

Relax
Fleet Admiral

Posts: 3230
Joined: Tue Oct 27, 2009 7:18 pm

MDM MK-23 is 48,000g
DDM MK-16 is 46,000g

Probably the difference you were obtaining. If you use 46,000g you should obtain JohnS 810s. Assuming one uses 10m/s^2 for a g instead of 9.81 that is.

For doing the 150Mkm, requires using a quadratic so... bah humbug to that. EDIT: uh no it doesn't. Doh.
_________
Tally Ho!
Relax
Top

Return to Honorverse