Author Topic: Frigates, Destroyers, And Cruisers Ideas And Inspirations  (Read 29474 times)

Offline tankmodeler

  • Wisely picking parts of the real universe 2 ignore
Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #105 on: August 21, 2019, 09:54:22 PM »
Mk13 40 round launcher as it (and the Mk11 that preceded it) were designed to fit in the same footprint as the Mk38 5" twin, this make it ideal for for replacing the centreline Mk38s on a USN standard cruiser type.
Very true, but the PK on the early missiles was pretty dismal. The Yank cruiser conversions went for the twin mounting in the M k 38 positions for that reason. The Mk 26s were upgraded to handle the SM-1s and -2s but it then left the ships with no short range SAMs, which is why I suggested the BDSM box launchers for Sea Sparrows with the Tartar, then SM-2 launchers to the rear for greater range.

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The Mk45 I refered to is the 5" naval gun.
I actually wondered that after I posted... Oops...  ;)

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The thinking behind keeping all three 8" gun houses is to permit two to be used for NGS with the third in reserve / maintenance.  This is how HMAS Vendetta conducted NGS off Vietnam, providing greater availability and redundancy than the Charles F Adams DDGs.
Three gun houses is a LOT of crew both in the turret and in the magazines and provides a huge amount of gunfire. More, in my opinion, to be sure, than would ever be necessary. Switching the systems in one remaining gun-house to the autoloader from the 8" Mk 71 still allows one turret to put as many as 36 rounds a minute down range. for several minutes until the magazines are exhausted. That's waaaay ore firepower than pretty much any post Vietnam deployment has ever called for. And the situations you can use it are pretty limited. Range is only 27 klicks, so you're looking at providing that sort of support for only those limited engagements that are near the sea and where your forces are faced by a truly numerous enemy. 2 gun houses, manned by fresh crews would double that for at least the first minute, but then would fall off that 10-12/minute rate as crews tired,. The autoloaders don't tire so, after the first minute or so, the max output from one autoloader turret would actually exceed the sustained rate from a manned turret. And, if there's no real reason to ever push the manned turrets so hard that they tire, then the need for multiple turrets is even less.


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My selection of the Mk 13 and Mk 45 (or possibly one 5" and a Mk75 3" on each beam) was for their reliability, supportability, commonality and lower manning.  Increased power generation is a no brainer, but the large hulls of the USN standard cruisers would mean volume for the new sytems wouldn't be an issue.  In addition the Mk13 permits the deployment of Harpoon and SM-2MR at a later date without any major structural canges being required.  The systems I could see being used would be those in production for the Oliver Hazard Perrys and Spruances during the 70s and 80s.
The Mk 26s switched over to the SM-1 and 2 as well, so that part is roughly equal, but it leaves you without short ranged AAD. The Sea Sparrows provide that inner layer until the early 90s at least.

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Modern (well 70s current) secondary and tertiary weapons, sensors, generators, switchboards etc. would reduce manning requirements, improve reliability etc. The object would be to upgrade several cruisers for the same capital outlay as a dozen FFGs, the hit would be in manning as the steam plants and 8" armament would still require more than modern ships.
But, for modern navies, it's the manning costs that are absolutely key to reduce.  Barring conscription, where you can pay the troops peanuts and provide minimal benefits, a volunteer navy is super expensive in personnel costs. Maintaining a ship with even 600-700 crew versus the 1150 of the WW2 versions, would be prohibitive and likely to cause the idea to never see the light of day. By the Mid 1970s, crew costs were the key expense to reduce in all volunteer navies. Notwithstanding how useful the Yanks found their BBs, it was crew costs that finally caused them to decommission them. They never got the crew numbers down low enough to make them viable.

But, of course, these are just my reasons for my WHIF on your idea. It's certainly your idea, I'm just watching and kibitzing.  ;D

Paul

Offline Volkodav

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #106 on: September 03, 2019, 09:40:27 PM »
The Mk 13 had the same rate of fire as the Mk11 twin arm but required lower manning (fewer maintainers) and was much more reliable. 

Tartar was designed as a point defence weapon, the advent of Standard MR made the Tartar launchers compatible with the area defence role.

Raytheon developed an adaptor permitting the Sea Sparrow to be handled and fired by the Mk-13, though no navy adopted the arrangement (probably because the Mk-41 VLS was just around the corner).

The role of the modernised cruisers would be NGS, Flagships and cooperative defence, i.e. contributing sensors and missiles to a larger force through NTDS.

Offline tankmodeler

  • Wisely picking parts of the real universe 2 ignore
Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #107 on: September 04, 2019, 09:55:28 PM »
The Mk 13 had the same rate of fire as the Mk11 twin arm but required lower manning (fewer maintainers) and was much more reliable. 
Did not know that. Thanks! Mk 13 it is, then. :)

Paul

Offline perttime

  • The man has produced a Finnish Napier Heston Fighter...need we say more?
Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #108 on: September 04, 2019, 11:06:01 PM »
Finland is getting some corvettes built. Some say you might as well call them frigates.
https://en.wikipedia.org/wiki/Pohjanmaa-class_corvette

"The class incorporates some major features including an ice class 1A-design. The flight deck, with its telescopic hangar can house either helicopters or UAVs.

The overall length of the Pohjanmaa-class corvettes is 105 m (344 ft), and the beam spans 15 m (49 ft). The ships displace about 3,000 tonnes (3,000 long tons; 3,300 short tons) at standard load and 3,300 tonnes (3,200 long tons; 3,600 short tons) when fully loaded. Each ship compliments a crew of 66120.]

The corvettes are going to be armed with Bofors 57 mm guns, ESSM surface-to-air missiles, Gabriel surface-to-surface missiles, Torped 47 anti-submarine torpedoes, as well as sea mines.

The combat management system is going to be provided by either by Saab Electronic Defence Systems (9LV CMS), Atlas Elektronik (ANCS) or Lockheed Martin (CMS 330). Saab's system was shortlisted in April 2019.
"

Ministry of Defence rendering:


Offline dy031101

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #109 on: October 12, 2019, 06:56:22 AM »
An imagination of the fictional JS Isokaze from Japanese novel "Aimless Aegis".

The live-action movie adaptation uses the Kongo class destroyer Myoko, but the original is based on the Hatakaze class destroyer with a fictional impression of the FCS-3 system and Mk.41 VLS (in place of the ASROC launcher and ostensibly for RIM-156B capability; the novel was published in 1999) for theater ballistic missile defense role.

Questions:

The Isokaze's fictional FCS-3 is centered around the SPY-1D set, but I don't think the SPY-1D can be accommodated in that tower...... or can it?

And if not, what are the alternative for a BMD-mission-capable main radar?

(I was thinking of the combination of the SPY-1F and SMART-L, but the SPY-1F tower is probably large enough to get in the way of the SMART-L's forward search arc, too......)
« Last Edit: October 12, 2019, 09:31:22 AM by dy031101 »
Forget about his bow and arrows- why wait until that sparrow has done his deed when I can just bury him right now 'cause I'm sick and tired of hearing why he wants to have his way with the cock robin!?

Offline apophenia

  • Patterns? What patterns?
Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #110 on: October 13, 2019, 02:50:19 AM »
The weight and mechanical complexity of a rotating base seems an odd choice for mounting a phased-array radar. Why bother when that array can be electronically steered?

You're also asking that one phased-array panel to do the work of the four antennae of an Arleigh Burke class DDG. On the other hand, if that mount also 'wobbles', you could slightly increase the radar horizon of the AN/SPY-1.

"Fearlessly the idiot faced the crowd, smiling ...""

Offline dy031101

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #111 on: October 13, 2019, 03:16:27 AM »
The weight and mechanical complexity of a rotating base seems an odd choice for mounting a phased-array radar. Why bother when that array can be electronically steered?

You're also asking that one phased-array panel to do the work of the four antennae of an Arleigh Burke class DDG. On the other hand, if that mount also 'wobbles', you could slightly increase the radar horizon of the AN/SPY-1.

I think the the picture was warped due to being on different pages of a book.

The rotating radar is actually the OPS-24.

The four SPY-1D panels are on the tower structure below the lattice mast...... with the forward-facing panel directly behind the second SPG-51......
Forget about his bow and arrows- why wait until that sparrow has done his deed when I can just bury him right now 'cause I'm sick and tired of hearing why he wants to have his way with the cock robin!?

Offline apophenia

  • Patterns? What patterns?
Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #112 on: October 14, 2019, 03:48:12 AM »
The four SPY-1D panels are on the tower structure below the lattice mast...... with the forward-facing panel directly behind the second SPG-51......

Doh! Of course they are  :-[
"Fearlessly the idiot faced the crowd, smiling ...""

Offline Old Wombat

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #113 on: October 14, 2019, 10:15:39 AM »
Wouldn't having the AN/SPG-51 in front of the forward-facing SPY-1D panel interfere with the performance of either or both?
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Offline dy031101

  • Yuri Fanboy and making cute stuff practical- at least that's the plan anyway
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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #114 on: October 14, 2019, 10:48:37 AM »
Wouldn't having the AN/SPG-51 in front of the forward-facing SPY-1D panel interfere with the performance of either or both?

That is another reason why I am not particularly convinced of the idea that the CG being in a workable state, in addition to me having doubts if the whole thing can be accommodated within that tower.  I'm not an expert on this, but even the installation used on the Spanish F100 class seems bigger.

There appears to be an AESA version of the SPY-1 called the SPY-1E that, according to Wikipedia, has the weight of antennae remaining the same (with, I think, the SPY-1D?) but weight below deck greatly reduced.  I think the attachment shows a single-faced demonstration unit.  I have no idea how it translates into size on an operational setup, however.
Forget about his bow and arrows- why wait until that sparrow has done his deed when I can just bury him right now 'cause I'm sick and tired of hearing why he wants to have his way with the cock robin!?

Offline Volkodav

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #115 on: October 14, 2019, 11:53:17 AM »
The weight and mechanical complexity of a rotating base seems an odd choice for mounting a phased-array radar. Why bother when that array can be electronically steered?

You're also asking that one phased-array panel to do the work of the four antennae of an Arleigh Burke class DDG. On the other hand, if that mount also 'wobbles', you could slightly increase the radar horizon of the AN/SPY-1.

Actually a few ships do have rotating phased arrays, usually either single arrays, or paired back to back arrays.  An example is Raytheon's SPY-6 which will be deployed in fixed arrays on Flight III Burkes, Ford Class CVNs, the New FFGs and retrofitted earlier Burkes but in a rotating version for the Flight II San Antonios.

Offline Volkodav

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #116 on: October 14, 2019, 11:55:42 AM »
SPY-1F is significantly smaller and lighter than SPY-1D.

Offline dy031101

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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #117 on: October 14, 2019, 12:34:57 PM »
SPY-1F is significantly smaller and lighter than SPY-1D.

Well...... but the SPY-1F can't do BMD.  ;)

(I reckon that it might still be able to provide uplink/downlink to the SM-2ER but would need a volume search radar capable of detecting and tracking the TBM, like the SMART-L.  While the SPY-1F installation aboard the Fridtjof Nansen class seems a bit on the big side, the planned configuration intended for MEKO 200 might lend itself a bit better for the combo on a larger ship.)
« Last Edit: October 14, 2019, 01:03:17 PM by dy031101 »
Forget about his bow and arrows- why wait until that sparrow has done his deed when I can just bury him right now 'cause I'm sick and tired of hearing why he wants to have his way with the cock robin!?

Offline Volkodav

  • Counts rivits with his abacus...
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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #118 on: October 14, 2019, 12:44:56 PM »
BDM is where a rotating Phased Array would be good, for a given weight you can have a much larger single array.

Offline dy031101

  • Yuri Fanboy and making cute stuff practical- at least that's the plan anyway
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Re: Frigates, Destroyers, And Cruisers Ideas And Inspirations
« Reply #119 on: October 14, 2019, 01:01:55 PM »
BDM is where a rotating Phased Array would be good, for a given weight you can have a much larger single array.

Speaking of rotating phased array, I'm currently having an intellectual exercise involving the SAMPSON radar: pre-Aegis missile illumination sets have a limited search capability to make up for the lower resolution and target refresh rate of ship-borne primary search radars whereas the SPG-62 illumination sets for the Aegis system are purely devoted to terminal illumination due to the capability and the constant 360-degree coverage of the SPY-1.

Outside of the SPY-1, the SAMPSON is the only multi-function radar I can think of with some degree of demonstrated BMD capability, and the SAMPSON also does midcourse data uplink and operates on S-band.  But back to anti-aircraft role- if the Aegis combat system is to have a variant using the SAMPSON radar, would an illuminator with limited search capability be desirable?  Or would having no part of the sky lacking coverage for "more than one half second on average" (according to Wikipedia) be good enough for still using the SPG-62 illuminator?
« Last Edit: October 14, 2019, 01:26:27 PM by dy031101 »
Forget about his bow and arrows- why wait until that sparrow has done his deed when I can just bury him right now 'cause I'm sick and tired of hearing why he wants to have his way with the cock robin!?