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CATZ
Post subject: Alagalagos Class CLNPosted: May 26th, 2011, 10:11 pm
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Created for an AU I'm working on. I plan to post the AU on the AU forum as soon as I'm finished with it. Unless people are mean. :-)

It's a nuclear powered light-cruiser, designed as a ASW and AA escort, with an emphasis on both. It does however, carry twenty-four AShM's in case the need arises to use deadly force against surface vessels, however these are strictly for defensive purposes. The ship also carries an experimental 130mm smoothbore naval gun. Design work for the vessel started in 1965, and was laid down in 1968, launched in 1970.

It has multiple sonars installed, and is an early instance of the use of VLS technology in place of the original launchers for the missiles used in the design. This is the first such vessel armed with VLS in the Disputed Territories. It employs navalized versions of the SA-5, SA-3 and SA-2.

This is a rough draft, so the specified dimensions of the vessel don't completely match to what I list in the text details below. This has to do with me making modifications in Springsharp. I will try to match them up ASAP. Please enjoy the design as a rough-draft in the meantime. :-)

This AU obviously uses Russian tech, however often times it has my own twist added in with a slew of modifications. As always, I'm open to questions and suggestions.

CLN-99 Alagalagos Class

Type: Light Cruiser
Role: Anti-Air Cruiser/Airspace Dominance

Length: 524.9 ft
Beam: 66 ft
Draft: 15.0 ft

Light: 7,809 t
Standard: 7,970 t
Full: 8,241 t

Sensors:

Radar:
Modified versions of; Don Kay, Don-2, Top Sail, Head Net 2x Head Lights 2x Muff Comb, 2 x Bass Tilt

Sonar:
Indigenous;
x8 Active- High & Medium Frequency Sonar Flank Arrays (50 KW ea.)
x2 Passive- Medium Frequency Sonar U-bend Slab Side & Keel coverage Arrays (117 KW ea.)

x1 Passive- High Frequency towed array (100 KW)
x1 Passive- Low frequency towed array (100 KW)

Passive Countermeasures:

Prairie-Masking

Ship quieting technology

Active Countermeasures:


Chaff

x2 30mm gattling CIWS (my idea of a pre-Kashtan technology, a sort of device which could have eventually led to the more complex Kashtan CIWS)


Powerplant:
x1 13LR Uranium 235 fuelled, Lead-Bismuth cooled, Fast-Reactor
= 180 MW

142.3 MW Propulsion power:
x4 Drive shafts-
Max Speed: 41.0 kts
Cruise Speed: 30 kts

Armament:

x1 130mm/70 Smoothbore

x5 RBU-6000

x8 533mm submerged torpedo tubes (bow)

x12 SS-N-9/P-120 AShM
x12 SS-N-2/P-15 AShM

x18 SA-5 Gammon/S-200
x24 SA-2 Guideline/S-75 Dvina
x62 SA-3/S-125 Goa

x2 helo's stowable in above deck hangar.

Upgrades:

S-200 Vega & Dubna
1970: S-200V/SA-5b

1976: S-200D/SA-5c

S-75 Dvina
1968 (stock): V-750SM
1971: Improved seeker
1981: Active-Radar Homing seeker upgrade


Ships in class:

CLN-3/CL-99 Alagalagos
CLN-4/CL-100 Acharnachas
CLN-5/CL-101 Lagoraglar
CLN-6/CL-102
CLN-7/CL-103
CLN-8/CL-104
CLN-9/CL-105
CLN-10/CL-106
CLN-11/CL-107
CLN-12/CL-108
CLN-13/CL-109
CLN-14/CL-110
CLN-15/CL-111
CLN-16/CL-112
CLN-17/CL-113
CLN-18/CL-114

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Last edited by CATZ on May 28th, 2011, 5:38 am, edited 3 times in total.

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Thiel
Post subject: Re: Alagalagos Class CLNPosted: May 26th, 2011, 10:21 pm
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I think I know what those yellow things underneath the hull are, but so far all experiments that didn't take place on tugs have failed miserably.

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CATZ
Post subject: Re: Alagalagos Class CLNPosted: May 26th, 2011, 11:14 pm
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Mmm, I'm not sure what you're thinking of since you didnt specify. But it's a Voith Schneider Propeller based propulsion system. Uses two sets of twin impellers.

To give you an idea of what they look like irl:

http://en.wikipedia.org/wiki/File:VSPsurtug.jpg


Pretty widely used for certain applications.

http://en.wikipedia.org/wiki/Voith_Schneider_Propeller

Some popular early uses-

http://en.wikipedia.org/wiki/R_boats

http://en.wikipedia.org/wiki/M_class_mi ... Germany%29

The Graf Zeppelin CV also had two of them in the bow, which were retractable.

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Rodondo
Post subject: Re: Alagalagos Class CLNPosted: May 26th, 2011, 11:18 pm
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Those Voith Propellers increase the draft quite a bit and they look a bit vulnerable to damage

But I like the design, very different and interesting, especially the ram-like bow

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heuhen
Post subject: Re: Alagalagos Class CLNPosted: May 26th, 2011, 11:26 pm
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But you do not get great speed out of them. Voith Schneider Propeller is designed for improved control property. and improved towing capabilities at low speed.

And I have not bothered to read about them as the best method here in Norway is by using thrusters. But I would have used them as the bow thrusters.

But as I say, "Think different, be seen as an idiot and take over the world! You are the man!"


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CATZ
Post subject: Re: Alagalagos Class CLNPosted: May 27th, 2011, 12:11 am
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hmm. Well, the R boats for instance had a top speed of 20 kts on 1850 hp for a 100-140 t ship. The M class had around 18 kts on 3,200 hp with a 870 t boat. From a hydrodynamics perspective, they have similar efficiency as a conventional propeller, but they have to be larger due to space requirements, and also because they require a greater surface volume to be in contact with the surrounding water in order to exert the same amount of force as a conventional propeller. So high speed is capable, but as you can see from my estimation, they are pretty large compared to a more conventional propulsion setup.

They also have a lower acoustic signature than conventional propellers, especially at higher speeds (due to their tendency to cativate less and only at higher speeds than a likewise comparable conventional propeller). For a ship which is designed as a large ASW vessel of the hunter-killer variety, it needs to be able to change direction rapidly even at high speeds, and have a low acoustic signature, especially at higher speeds when chasing a nuclear attack submarine.

My method for deployment, would be one of these CL's, with a escort group of 4 to 8 much smaller chase vessels, which do the majority of the chasing, and place the CL in danger less than if it was operating without companion vessels. The real purpose of the CL, is thus to protect the smaller vessels from surface & air threats while they do their job, as well as providing significant ASW capabilities...especially at a distance, thus expanding the operational and endurance capabilities of smaller ASW vessels. They do this by providing protection, assistance and also re-arming and refueling the smaller shorter ranged vessels while at sea.

And of course they do have a deeper draft as a result of the V-S propellers, but for a vessel designed to be a blue water combatant, that's a pretty minor issue.

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Last edited by CATZ on May 27th, 2011, 12:25 am, edited 1 time in total.

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klagldsf
Post subject: Re: Alagalagos Class CLNPosted: May 27th, 2011, 12:25 am
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what the hell is this?


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CATZ
Post subject: Re: Alagalagos Class CLNPosted: May 27th, 2011, 12:27 am
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klagldsf wrote:
what the hell is this?
[ img ]

Your mother without her makeup on. :-(



Just kidding. :-p

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klagldsf
Post subject: Re: Alagalagos Class CLNPosted: May 27th, 2011, 1:51 am
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Ok how about some real input from someone who has more than 100 posts to his account:

1.) Overall the design looks very home at NationStates. While I'm sure this is the intention, that's not a compliment.

2.) Please refer to this thread on why we have a beginner's forum

3.) The missiles and other details do not conform to Shipbucket standards. This is somewhat important towards justification for being posted on this specific sub-forum.

4.) It represents a very poor understanding of propulsion systems

5.) Most of what it did get right is by virtue of kitbashing, so I'll give you credit for in turn crediting

6.) I'm not going to say that we generally frown upon posting ships from NationStates, but I do like to think we try for some effort here. Please see link above.


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CATZ
Post subject: Re: Alagalagos Class CLNPosted: May 27th, 2011, 2:07 am
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klagldsf wrote:
Ok how about some real input from someone who has more than 100 posts to his account:

1.) Overall the design looks very home at NationStates. While I'm sure this is the intention, that's not a compliment.

2.) Please refer to this thread on why we have a beginner's forum

3.) The missiles and other details do not conform to Shipbucket standards. This is somewhat important towards justification for being posted on this specific sub-forum.

4.) It represents a very poor understanding of propulsion systems

5.) Most of what it did get right is by virtue of kitbashing, so I'll give you credit for in turn crediting

6.) I'm not going to say that we generally frown upon posting ships from NationStates, but I do like to think we try for some effort here. Please see link above.
Having more than 100 posts to your name doesn't make your post anything more than nonsense. You could have 1000 posts and still be relatively opinionated, and little else. As for the missiles, they're a little oversized and have pixel errors. Aside from that I haven't decided what I want to do with them yet. They definitely have more detail than SB missiles, that's for sure. But they don't conform to the line drawing based rules. Since it's a rough draft, that's my prerogative.

As for the propulsion systems...enlighten us, oh enlightened one. I'm pretty smart when it comes to physics and things concerning engineering, so I'd have a hard time believing you'd be some kind of an expert on Voith-Schneider propulsion systems. I have a very good understanding of the setup, not to say that you don't...but to put it kindly, I'll take my own experience over your one liner response to the issue.

As for nationstates, please avoid using references that don't mean anything to me. I've never been there or used that site, so your insult falls a little short of anything that would have any meaning to me.

Also, I stated it's a rough-draft, so I'll dismiss your entire critique as just you trying to irritate me. I plainly stated it was a rough draft to avoid the nonsensical posts from people who purposely misunderstand things. Especially since I've seen people post sketches of ships they're going to do, and then slowly fill in the details line by line. So it's not likely every ship posted to this forum is a 100% finished product by any means.

And don't use silly excuses about how many posts you have to try and excuse your behavior. It's impolite to say the least. Regardless of how many posts you have, that was pretty rude of you. And pretty unfounded.

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Last edited by CATZ on May 27th, 2011, 2:12 am, edited 3 times in total.

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