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by Gallia- » Wed Oct 26, 2016 1:48 pm

by Ormata » Wed Oct 26, 2016 1:49 pm

by Laritaia » Wed Oct 26, 2016 2:00 pm
Ormata wrote:Question.
How many submarines would a nation which has a large coastline (Is on a peninsula) have?
Also, is the "Milk Cow" submarine concept, the German Type XIV submarine, viable in a modern war environment?

by Ormata » Wed Oct 26, 2016 2:03 pm
Laritaia wrote:Ormata wrote:Question.
How many submarines would a nation which has a large coastline (Is on a peninsula) have?
Also, is the "Milk Cow" submarine concept, the German Type XIV submarine, viable in a modern war environment?
modern submarines have far greater facilities and endurance then the U-boats of WWII, they for example don't need other ships to make bread.

by Laritaia » Wed Oct 26, 2016 2:04 pm
Ormata wrote:Laritaia wrote:
modern submarines have far greater facilities and endurance then the U-boats of WWII, they for example don't need other ships to make bread.
Allow me to explain. My most prolific submarine class is the (Poorly-named) Class A, a 32.11 m long, 238 ton coastal submarine. Quiet, sneaky, but it does not have a nuclear reactor and has less accommodations than U-boats of WWII.

by Gallia- » Wed Oct 26, 2016 2:11 pm
Ormata wrote:Laritaia wrote:
modern submarines have far greater facilities and endurance then the U-boats of WWII, they for example don't need other ships to make bread.
Allow me to explain. My most prolific submarine class is the (Poorly-named) Class A, a 32.11 m long, 238 ton coastal submarine. Quiet, sneaky, but it does not have a nuclear reactor and has less accommodations than U-boats of WWII.

by The Akasha Colony » Wed Oct 26, 2016 2:17 pm
Ormata wrote:Laritaia wrote:
modern submarines have far greater facilities and endurance then the U-boats of WWII, they for example don't need other ships to make bread.
Allow me to explain. My most prolific submarine class is the (Poorly-named) Class A, a 32.11 m long, 238 ton coastal submarine. Quiet, sneaky, but it does not have a nuclear reactor and has less accommodations than U-boats of WWII.

by Wesontia » Wed Oct 26, 2016 3:20 pm
Liberty-Class Fleet Carrier
Displacement: 51,000t
Length: 275m
Beam: 65m
Draft: 10m
Powerplant: 2x 250 MWt nuclear reactor
Launch systems: 2x EMALs Catapult
Speed: 30+ Knots
Range: Unlimited
Crew/Complement: Up to 2,400
Armament: 4x 30mm CIWS, 2x RAM Mk 31
Aircraft: 30 Multirole fighters, 4-6 AEW craft, 12 helicopters

by Ormata » Wed Oct 26, 2016 4:04 pm
Wesontia wrote:All right, so, here's a quick rundown of the carrier. Criticize away.Liberty-Class Fleet Carrier
Displacement: 51,000t
Length: 275m
Beam: 65m
Draft: 10m
Powerplant: 2x 250 MWt nuclear reactor
Launch systems: 2x EMALs Catapult
Speed: 30+ Knots
Range: Unlimited
Crew/Complement: Up to 2,400
Armament: 4x 30mm CIWS, 2x RAM Mk 31
Aircraft: 30 Multirole fighters, 4-6 AEW craft, 12 helicopters
Wattage is a question, I haven't been able to turn up too much on the subject-I know the EMALs mean that having some excess power is a definite benefit, but I am not entirely sure of what an appropriate level would be, I cut it down from 300 MWt originally, but would gratefully defer to someone with greater knowledge on the subject.


by Wesontia » Wed Oct 26, 2016 4:08 pm
Ormata wrote:Wesontia wrote:All right, so, here's a quick rundown of the carrier. Criticize away.Liberty-Class Fleet Carrier
Displacement: 51,000t
Length: 275m
Beam: 65m
Draft: 10m
Powerplant: 2x 250 MWt nuclear reactor
Launch systems: 2x EMALs Catapult
Speed: 30+ Knots
Range: Unlimited
Crew/Complement: Up to 2,400
Armament: 4x 30mm CIWS, 2x RAM Mk 31
Aircraft: 30 Multirole fighters, 4-6 AEW craft, 12 helicopters
Wattage is a question, I haven't been able to turn up too much on the subject-I know the EMALs mean that having some excess power is a definite benefit, but I am not entirely sure of what an appropriate level would be, I cut it down from 300 MWt originally, but would gratefully defer to someone with greater knowledge on the subject.
Seriously, though, I would give it some more firepower. Even if it is not meant to be a frontline unit (Which no fleet carrier is), just for the benefit of not being murdered and for the pride of those 51,000 tons.

by The Akasha Colony » Wed Oct 26, 2016 4:10 pm
Wesontia wrote:You were thinking AShMs? I was not too concerned with point-defense, given that there is no situation in which a carrier like this is not going to be travelling without air-defense frigates as escort-I was considering cutting it down to 44-46kt displacement, though I deferred on that. What would you recommend?

by Gallia- » Wed Oct 26, 2016 4:20 pm

by Wesontia » Wed Oct 26, 2016 4:22 pm
The Akasha Colony wrote:Wesontia wrote:You were thinking AShMs? I was not too concerned with point-defense, given that there is no situation in which a carrier like this is not going to be travelling without air-defense frigates as escort-I was considering cutting it down to 44-46kt displacement, though I deferred on that. What would you recommend?
There isn't really a strong need for anything more.
Maybe an 8-16 cell VLS or something for short to medium-range SAMs, mounted in one of the sponsons. Maybe a compact 76 mm gun, but neither of these are really necessary either.
Ormata wrote:To be honest, I recommend more SAMs. Your CIWS seems to be enough, but I think you need more SAMs. A VLS like on the Charles de Gaulle would be good.

by The Akasha Colony » Wed Oct 26, 2016 4:24 pm
Wesontia wrote:The Akasha Colony wrote:
There isn't really a strong need for anything more.
Maybe an 8-16 cell VLS or something for short to medium-range SAMs, mounted in one of the sponsons. Maybe a compact 76 mm gun, but neither of these are really necessary either.
Those were my thoughts. A carrier doesn't really need anything other than emergency last-line-of-defense weapons.Ormata wrote:To be honest, I recommend more SAMs. Your CIWS seems to be enough, but I think you need more SAMs. A VLS like on the Charles de Gaulle would be good.
I would think that that space would be better suited to boosting the air complement, given that the escorts would be expected to take care of that. Is there any specific situation in which more SAMs would be needed?

by Wesontia » Wed Oct 26, 2016 4:27 pm
The Akasha Colony wrote:Wesontia wrote:
Those were my thoughts. A carrier doesn't really need anything other than emergency last-line-of-defense weapons.
I would think that that space would be better suited to boosting the air complement, given that the escorts would be expected to take care of that. Is there any specific situation in which more SAMs would be needed?
Those armaments wouldn't take up any internal space, since they'd likely be mounted to the side on sponsons dedicated to that purpose.

by Wesontia » Wed Oct 26, 2016 4:33 pm

by The Akasha Colony » Wed Oct 26, 2016 4:35 pm
Wesontia wrote:Chalk one up to my ignorance of ship design. What would the main drawbacks be to loading up on VLS cells and the like?
Ormata wrote:Probably armament issues, IE taking-up space with reloads.
I recommend it because, well...mostly redundancy. Also because the Nimitz has them.

by Wesontia » Wed Oct 26, 2016 4:39 pm
The Akasha Colony wrote:Wesontia wrote:Chalk one up to my ignorance of ship design. What would the main drawbacks be to loading up on VLS cells and the like?
They don't directly take up internal volume but they do add weight and they will add a few extra crewmen to maintain them. The real issue is cost, comparing the cost of additional or larger sponsons with heavier armaments with the expected benefit. And that ratio declines with more weapons because while adding a 16 cell VLS to carry some Asters or SM-2s is a big improvement in capability, adding a 64 cell VLS is imply unnecessary, it doesn't add anything beyond the 16 cell VLS except more missiles.Ormata wrote:Probably armament issues, IE taking-up space with reloads.
I recommend it because, well...mostly redundancy. Also because the Nimitz has them.
Nimitz doesn't carry any VLS. It's actually fairly lightly armed, the only increase in armament it has over the original proposed design are Sea Sparrow launchers, for slightly more range.
"Reloads" for VLS-based missiles generally aren't carried. The entire point of a VLS is to allow the entire stock of missiles to be ready to fire at once, rather than using a magazine + launcher system as in the old single and twin arm systems. There were systems designed to allow the system to be reloaded at sea with missiles supplied by a munitions ship, but these are no longer in use.

by Gallia- » Wed Oct 26, 2016 4:53 pm

by The Technocratic Syndicalists » Wed Oct 26, 2016 5:35 pm
Wesontia wrote:All right, so, here's a quick rundown of the carrier. Criticize away.Liberty-Class Fleet Carrier
Displacement: 51,000t
Length: 275m
Beam: 65m
Draft: 10m
Powerplant: 2x 250 MWt nuclear reactor
Launch systems: 2x EMALs Catapult
Speed: 30+ Knots
Range: Unlimited
Crew/Complement: Up to 2,400
Armament: 4x 30mm CIWS, 2x RAM Mk 31
Aircraft: 30 Multirole fighters, 4-6 AEW craft, 12 helicopters
Wattage is a question, I haven't been able to turn up too much on the subject-I know the EMALs mean that having some excess power is a definite benefit, but I am not entirely sure of what an appropriate level would be, I cut it down from 300 MWt originally, but would gratefully defer to someone with greater knowledge on the subject.
| SDI AG Arcaenian Military Factbook | Task Force Atlas International Freedom Coalition |

by Wesontia » Wed Oct 26, 2016 6:04 pm
The Technocratic Syndicalists wrote:Wesontia wrote:All right, so, here's a quick rundown of the carrier. Criticize away.Liberty-Class Fleet Carrier
Displacement: 51,000t
Length: 275m
Beam: 65m
Draft: 10m
Powerplant: 2x 250 MWt nuclear reactor
Launch systems: 2x EMALs Catapult
Speed: 30+ Knots
Range: Unlimited
Crew/Complement: Up to 2,400
Armament: 4x 30mm CIWS, 2x RAM Mk 31
Aircraft: 30 Multirole fighters, 4-6 AEW craft, 12 helicopters
Wattage is a question, I haven't been able to turn up too much on the subject-I know the EMALs mean that having some excess power is a definite benefit, but I am not entirely sure of what an appropriate level would be, I cut it down from 300 MWt originally, but would gratefully defer to someone with greater knowledge on the subject.
The EMALS on the ford are each 103 meters long and are designed to accelerate a 45,000kg aircraft to a speed of 130 knots (~67 m/s) and store 484 MJ of energy in four flywheel disc alternators (121MJ per flywheel). The actual efficiency of EMALS is then rather low, the energy required to launch the aircraft would be as follows: acceleration = (67^2)/(2*103) = 21.8 m/s^2. Force is then 45,000*21.8 = 981000N which means work = 981000*103 = 101043000J = 101.043 MJ. The charge time is 45 seconds which means you need to provide ~10.76 MW of power during that time period. Two 250MWt reactors would give you ~100 MW of output. To get to 27-28 knots you would need around 60-80MW of shaft power, 30+ knots would require around 130-150MW of power (power required goes up exponentially due to wave-making drag) which is more than your reactors can provide so you would probably be limited to around 28-29 knots. To charge both catapults you would need ~21.5MW of power so your max speed then would be limited to 26-27 knots while the catapults are being charged.

by Minroz » Thu Oct 27, 2016 4:01 am
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