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Honorverse ramblings and musings

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Re: Honorverse ramblings and musings
Post by Jonathan_S   » Mon Mar 05, 2018 7:57 pm

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n7axw wrote:IIRC, bow and stern walls developed in two stages. The first completely sealed up the end (bow or stern). Oversteegen had the earlier stage when he was at Refuge with Abby. He had to cut power to use the stern wall. But the newer stuff, the Rolands, the Sag Cs and up all have the later stage wall which permitted the vessel to continue accelerating with the wall activated. These walls cover most of the bow or stern but leave enough open to allow the vessel to move under power. Conceivably a laser could slip past this wall, but the possibility of it doing so is low.

Don

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The later "buckler" bow wall was described (in SoS) as "a much smaller, circular shield, its diameter less than twice the ship's extreme beam. It offered no protection against beams coming in from acute angles, and a laserhead could actually slip right past it before detonating."

Actually crunching the numbers, and assuming it's the same 10 km away as the sidewalls, it only protects the whole ship from shots occurring within about 1/6th of a degree from dead ahead. Any more than that and there's a perfect angle to skim past the forward buckler and hit the top rear of the aft hammerhead. It's better than nothing against laserheads, and it's be devastating in an energy range chase against a single opponent. But against even a pair of enemies, or a lot of missiles, it's a minuscule shield to try to hide behind.

(It might make sense to have that closer to the ship than normal sidewalls. You get less protection from each hit, but you block more angles hit could come from. The covered angles scale approximately linearly with reduced standoff distance. Cut standoff in half and cover about twice as wide a set of angles. Still pull it back to the probably ineffective 100 meter standoff and you're only covering about 9 degrees +/- from dead ahead. Even the aft wedge opening gives a much larger angle of visibility than that)
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Re: Honorverse ramblings and musings
Post by Theemile   » Tue Mar 06, 2018 10:11 am

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n7axw wrote:

IIRC, bow and stern walls developed in two stages. The first completely sealed up the end (bow or stern). Oversteegen had the earlier stage when he was at Refuge with Abby. He had to cut power to use the stern wall. But the newer stuff, the Rolands, the Sag Cs and up all have the later stage wall which permitted the vessel to continue accelerating with the wall activated. These walls cover most of the bow or stern but leave enough open to allow the vessel to move under power. Conceivably a laser could slip past this wall, but the possibility of it doing so is low.

Don

-


Another point is either design (Bow wall or Buckler)requires a complete redesign (and thus complete rebuild) of the impeller room to accommodate these changes, including new, modified nodes. And if you want a more powerful impeller - you need to rebuild both rooms.

In short, retrofitting in a bow wall isn't a simple, or even routine procedure. it is probably easier to redesign a ship and build from scratch.
******
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."
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Re: Honorverse ramblings and musings
Post by n7axw   » Tue Mar 06, 2018 10:17 am

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Theemile wrote:
n7axw wrote:

IIRC, bow and stern walls developed in two stages. The first completely sealed up the end (bow or stern). Oversteegen had the earlier stage when he was at Refuge with Abby. He had to cut power to use the stern wall. But the newer stuff, the Rolands, the Sag Cs and up all have the later stage wall which permitted the vessel to continue accelerating with the wall activated. These walls cover most of the bow or stern but leave enough open to allow the vessel to move under power. Conceivably a laser could slip past this wall, but the possibility of it doing so is low.

Don

-


Another point is either design (Bow wall or Buckler)requires a complete redesign (and thus complete rebuild) of the impeller room to accommodate these changes, including new, modified nodes. And if you want a more powerful impeller - you need to rebuild both rooms.

In short, retrofitting in a bow wall isn't a simple, or even routine procedure. it is probably easier to redesign a ship and build from scratch.


Redesigning and building from scratch is undoubtedly what happened once the stage two bow wall became the norm.

Don

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When any group seeks political power in God's name, both religion and politics are instantly corrupted.
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Re: Honorverse ramblings and musings
Post by Jonathan_S   » Tue Mar 06, 2018 12:19 pm

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Theemile wrote:
n7axw wrote:

IIRC, bow and stern walls developed in two stages. The first completely sealed up the end (bow or stern). Oversteegen had the earlier stage when he was at Refuge with Abby. He had to cut power to use the stern wall. But the newer stuff, the Rolands, the Sag Cs and up all have the later stage wall which permitted the vessel to continue accelerating with the wall activated. These walls cover most of the bow or stern but leave enough open to allow the vessel to move under power. Conceivably a laser could slip past this wall, but the possibility of it doing so is low.

Don

-


Another point is either design (Bow wall or Buckler)requires a complete redesign (and thus complete rebuild) of the impeller room to accommodate these changes, including new, modified nodes. And if you want a more powerful impeller - you need to rebuild both rooms.

In short, retrofitting in a bow wall isn't a simple, or even routine procedure. it is probably easier to redesign a ship and build from scratch.

Yep. It was only easy to shoehorn a field expedient stern wall into the Shrike because it's beta squared nodes (and impeller hardware) were already compatible with the latest toys - high repetition rate FTL signalling, bow wall, extra power (compared to 'conventional' beta nodes)



What would be interesting to know if how difficult it would be to back fit the 2 stage bow wall into a ship like the Saganami-B CA which was built with the slightly older single stage version. Are there additional impeller node/room mods needed to upgrade to the newer more flexible version? (Though depending on when it was invented the later flights of Sag-Bs might have have had 2-stage walls as factory standard; but at least the initial batch seem to be single-stage only)
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Re: Honorverse ramblings and musings
Post by Theemile   » Tue Mar 06, 2018 1:28 pm

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Jonathan_S wrote:
Yep. It was only easy to shoehorn a field expedient stern wall into the Shrike because it's beta squared nodes (and impeller hardware) were already compatible with the latest toys - high repetition rate FTL signalling, bow wall, extra power (compared to 'conventional' beta nodes)

What would be interesting to know if how difficult it would be to back fit the 2 stage bow wall into a ship like the Saganami-B CA which was built with the slightly older single stage version. Are there additional impeller node/room mods needed to upgrade to the newer more flexible version? (Though depending on when it was invented the later flights of Sag-Bs might have have had 2-stage walls as factory standard; but at least the initial batch seem to be single-stage only)


What's most important to note, is what is capable from the SLN perspective - Which is not much.

The hordes of current BCs and CAs in the field (and reserve) cannot be upgraded with this tech easily or economically, even if the SLN acquires the tech tomorrow. It will require entire new builds of new designs, of hardware that does not exist yet.

So to build a Sag-C combatant (as far as the sidewalls, impellers, and FTL communications, the SLN will need to research/ steal the tech, design a new ship , then build it. That will be several years to build a pier ship at the very least.
******
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."
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Re: Honorverse ramblings and musings
Post by pappilon   » Tue Mar 06, 2018 9:18 pm

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Theemile wrote:
What's most important to note, is what is capable from the SLN perspective - Which is not much.

The hordes of current BCs and CAs in the field (and reserve) cannot be upgraded with this tech easily or economically, even if the SLN acquires the tech tomorrow. It will require entire new builds of new designs, of hardware that does not exist yet.

So to build a Sag-C combatant (as far as the sidewalls, impellers, and FTL communications, the SLN will need to research/ steal the tech, design a new ship , then build it. That will be several years to build a pier ship at the very least.



Even with the specs, Haven had a rough time duplicating the Manty hardware. Not trying to downplay the SL tech advantage over the (New) republic of Haven, but 20 years of catch-up-or-die has a way of focusing one's attention. The Solarian league, by contrast may have larger pools to draw from but they still are facing an even larger relative missile tube than Haven did at Operation Buttercup.
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Re: Honorverse ramblings and musings
Post by ldwechsler   » Wed Mar 07, 2018 1:38 pm

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pappilon wrote:
Theemile wrote:
What's most important to note, is what is capable from the SLN perspective - Which is not much.

The hordes of current BCs and CAs in the field (and reserve) cannot be upgraded with this tech easily or economically, even if the SLN acquires the tech tomorrow. It will require entire new builds of new designs, of hardware that does not exist yet.

So to build a Sag-C combatant (as far as the sidewalls, impellers, and FTL communications, the SLN will need to research/ steal the tech, design a new ship , then build it. That will be several years to build a pier ship at the very least.



The real issue is that there are so many technical issues involved. From size of ships to far better targeted and longer ranging missiles to FTL communications to better shipboard controls of missiles, etc., the Sollies are really far behind.

Yes, they have a huge base to draw on but these are a lot of specialties and some might barely exist in the League.

Also, building new big ships takes years. And that assumes that the GA doesn't find out where you're building them and comes to destroy them.



Even with the specs, Haven had a rough time duplicating the Manty hardware. Not trying to downplay the SL tech advantage over the (New) republic of Haven, but 20 years of catch-up-or-die has a way of focusing one's attention. The Solarian league, by contrast may have larger pools to draw from but they still are facing an even larger relative missile tube than Haven did at Operation Buttercup.
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Re: Honorverse ramblings and musings
Post by pappilon   » Thu Mar 08, 2018 8:36 pm

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ldwechsler wrote:
What's most important to note, is what is capable from the SLN perspective - Which is not much.

The hordes of current BCs and CAs in the field (and reserve) cannot be upgraded with this tech easily or economically, even if the SLN acquires the tech tomorrow. It will require entire new builds of new designs, of hardware that does not exist yet.

So to build a Sag-C combatant (as far as the sidewalls, impellers, and FTL communications, the SLN will need to research/ steal the tech, design a new ship , then build it. That will be several years to build a pier ship at the very least.


And to repeat, it is in the matter of DOCTRINE: The basic principles of ship design, weapons mix, mission, the compromises that are made, training etc., the entire mindset of the military beaurocracy where the SLN is so far behind the GA, the Andermani, and the MAlign.

With so many big guns (Andermani excepted) bearing down upon them, I doubt they have the time available to even start laying down survivable SDs.
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Ursula K. LeGuinn

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Re: Honorverse ramblings and musings
Post by kzt   » Thu Mar 08, 2018 9:25 pm

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pappilon wrote:And to repeat, it is in the matter of DOCTRINE: The basic principles of ship design, weapons mix, mission, the compromises that are made, training etc., the entire mindset of the military beaurocracy where the SLN is so far behind the GA, the Andermani, and the MAlign.

As was the USN behind the IJN in 1941. Which is why there were not many USN victories until US code breakers were able to provide critical help to the operational units.
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Re: Honorverse ramblings and musings
Post by Jonathan_S   » Thu Mar 08, 2018 11:29 pm

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kzt wrote:
pappilon wrote:And to repeat, it is in the matter of DOCTRINE: The basic principles of ship design, weapons mix, mission, the compromises that are made, training etc., the entire mindset of the military beaurocracy where the SLN is so far behind the GA, the Andermani, and the MAlign.

As was the USN behind the IJN in 1941. Which is why there were not many USN victories until US code breakers were able to provide critical help to the operational units.

The USN was nowhere near as far behind the IJN as the SLN is behind the RMN.

Even in the early fights like Coral Sea the much maligned Wildcat tended to turn in about 1:1 exchange rates with the vaunted Zero. And as tactics improved so did survivability - even before new and improved designs made their way to the front.

The Kudo Butai had some major doctrinal advantages over the US Carriers (coordinated strikes, for example) but had issues with tactical and strategic doctrine (tactical: AA defenses and fighter control. strategic: pilot replacement/training and unwillingness to change airwings assignments - the undamaged Zuikaku sat out Midway because she'd lost too many planes at Coral Sea; despite having planes and pilots that could have been assigned to her in plenty of time).

Then of course 7 months in we have Midway and, in part due to code breaking and in part due to luck, the tides totally turned against the IJN.
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