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heuhen
Post subject: Re: The Norwegian alternative ships ideaPosted: February 3rd, 2022, 1:31 pm
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WIP

A different idea I have been thinking about!

Same hull, limits is still the dock at Haakonsvern Naval base, but I still use the max beam, there is a chance the gate have to be adjusted.

Frigate, escort, ASW, drone-ship:

my pondering list:
- reduce here width, down to perhaps 18+m instead of 20m
- possibility for an aft deck VLS like Mk57 VLS placed far out in the sides on helicopter deck.
- reduce the size of helicopter deck to increase space in hangar for more drones.
- forward structure for RAM, so I can have 1 aft, 1 forward.
- radar setup, phased?
- do I need illumination radar with current radar?
- 57 or 76mm (Norway use 40 and 57 mm on coast guard vessel and 76 on navy ships)?
- Crew size 140+ since it's a drone ship, perhaps 160+ is better (still need crew for drones)?
- Reduce the width of the radar, structure?

Current on drawing:
- Twin LM2500 turbine (same turbine size of FNAN), not the LM2500+G4 turbine
- 4 main diesel
- 2 x RAM
- VLS
- 57mm gun
- Helicpoter
- Spy-6 derivative or modular Phased
- torpedoes?

[ img ]


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Hood
Post subject: Re: The Norwegian alternative ships ideaPosted: February 5th, 2022, 9:13 am
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I would be tempted to add ASW torpedoes as well as maybe a couple of smaller guns (MGs-miniguns).
An interesting design, when you say "drone ship" do you mean this is equipped to operate drone UAV/UUVs?

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eswube
Post subject: Re: The Norwegian alternative ships ideaPosted: February 5th, 2022, 11:57 am
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Great looking designs.

@Hood
I hope that what "drone ship" is supposed to mean, as having a frigate-sized drone would be a crazy idea even for HeuHen's standards. ;) :lol:


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heuhen
Post subject: Re: The Norwegian alternative ships ideaPosted: February 5th, 2022, 2:28 pm
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eswube wrote: *
Great looking designs.

@Hood
I hope that what "drone ship" is supposed to mean, as having a frigate-sized drone would be a crazy idea even for HeuHen's standards. ;) :lol:
it'l have drones onboard, (UAV, etc.)

Although it's not impossible to have a drone ship, it is something we already are doing in Norway, on military side it's still on test-stage. But on the commercial side, there is a autonomous ship with remote control when needed (it are going to operate without crew, but have just been put into traffic, so a little early for that, they have to make sure every ting works)

https://techxplore.com/news/2021-11-ele ... orway.html

Hood wrote: *
I would be tempted to add ASW torpedoes as well as maybe a couple of smaller guns (MGs-miniguns).
An interesting design, when you say "drone ship" do you mean this is equipped to operate drone UAV/UUVs?
Still early WIP, I am still thinking about layoute.

But on Torpedo side, she will be armed with the classic ASW-torpedo but also the new type of torpedo some are under development (specially in US) a 6.7" torpedo (special armed/focused as a Anti-torpedo weapon)


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heuhen
Post subject: Re: The Norwegian alternative ships ideaPosted: February 5th, 2022, 3:08 pm
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Temporary update! WIP

My pondering list:
- what type of UAV?
- moving both Hangar door more to center, and thus can have 30 mm in a wing position.
- MG-position on the bow, stern, port and starboard (structure), Hangar roof
- position for 2 remote controlled HMG on top of main structure. (port and starboard)


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heuhen
Post subject: Re: The Norwegian alternative ships ideaPosted: February 6th, 2022, 12:19 am
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And even some more update. just some small things left.

what I have on the drawing:
1 x 57 mm gun
2 x 30mm Bushmaster (chance Norway would go for Millenium gun since neighbors)
1 x 32 cell Mk41 VLS (Standard missile load) (I wouldn't be surprised if Norway went for something similar to Mk57 VLS)
2 x RAM (was considering to replace the aft one with NASAM, since Kongsberg offered it for there Corvette-concept)
2 x quad NSM-launcher (mounted in similar way as Skjold class, but it's blow out is up the deck in similar fashion of VLS)
2 x twin ASW torpedo launcher
2 x 6-double Torpedo launcher for 6.7" anti torpedo weapon

1 Hangar-door for medium helicopter and 1 hangar door for UAV, drones, etc.

For radar:
Spy-6 or 7 depending how you look at it, and what you want (modular is what I think)
a separate phased array for illumination (perhaps same tech as Spy-6 if that is possible)
a phased rotating navigation radar, replacing the normal navigation radar, but there is no problem using normal off the shelf radars.
various classic radar and satellites to reduce the cost, a tiny little (you need something to show the politician, at how god at saving some off the money :lol: )

Unit cost: have no idea, but the development cost will be funny, unless you manage to use already developed equipment as a plug and play!

[ img ]


It do wonder , what type of role would it have. It is already ASW and AAW capable and the NSM give it ASuW capability even toward land targets, but you have only 8 missiles, unless you want a launcher build into the helicopter deck like Skjold class have, but then you get other problems. I wouldn't be surprised if it was a lead ship in a small task group.


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Hood
Post subject: Re: The Norwegian alternative ships ideaPosted: February 6th, 2022, 9:52 am
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I like the result a lot, looks very good and has everything I think you'd want a frigate to have and not completely break the bank balance.

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acelanceloet
Post subject: Re: The Norwegian alternative ships ideaPosted: February 6th, 2022, 10:58 am
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I just wonder a bit, isn't that helideck a bit on the large size, since it has only one spot? also, a few minor comments:
- I'm not sure how the exhausts and intakes on this ship work. You have big vents in the sides of it's structure but that volume is already taken by the exhausts, so the intakes have nowhere to go. There are intakes on top of that structure too, which seem to be mostly sucking in (rain)water and exhaust? I would just have turbine removal hatches there.
- Speaking of turbine removal hatches, it looks like all engines are centralised under the central superstructure. Nothing wrong with that but it seems a tad risky from a damage control perspective. One lucky hit by any weapon could take out most if not all of the propulsion systems on this ship.
- I suspect the engines are electrically coupled? otherwise the shaft angle and the location of the engine rooms puts the gearboxes very high in the ship.
- The RAM launchers are facing the wrong way ;)
- I suspect the T-line on the helideck can come a lot more forwards, freeing a lot more space on the helideck for VERTREP.
- One could decrease the cost of the radars even more by putting them on 120 degree angles instead of 90, as can be done by many of the current generation radars.

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heuhen
Post subject: Re: The Norwegian alternative ships ideaPosted: February 6th, 2022, 1:08 pm
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Quote:
I just wonder a bit, isn't that helideck a bit on the large size, since it has only one spot?
The size is due to the helideck isn't only doing helicopter operation, but also drone operation. It's on my list to make some markings for that (will just be a square box with a marker for center)
Quote:
- I'm not sure how the exhausts and intakes on this ship work. You have big vents in the sides of it's structure but that volume is already taken by the exhausts, so the intakes have nowhere to go. There are


Don't worry it's plenty of space, go look at other frigates and you will notice they have even less space for vents.... have you seen a vents that go 2-10-20 meter inn?
Quote:
intakes on top of that structure too, which seem to be mostly sucking in (rain)water and exhaust? I would just have turbine removal hatches there.
those are no really an intakes but a more for a airflow trough the funnel structure as part of cooling the funnel, but there might be an intake on the inside, how knows.
Quote:
- Speaking of turbine removal hatches, it looks like all engines are centralised under the central superstructure. Nothing wrong with that but it seems a tad risky from a damage control perspective. One lucky hit by any weapon could take out most if not all of the propulsion systems on this ship.
The engine isn't centralized, but the intake/exhaust is, it's a limitation that have to be taken on this design variant. Of course I could gone with a single LM2500+G4 or LM6000, instead of 2 standard LM2500.
Quote:
- I suspect the engines are electrically coupled? otherwise the shaft angle and the location of the engine rooms puts the gearboxes very high in the ship.
Engine is mounted the same way in other frigates! But having them electrical coupled do give some advantages.
Quote:
- The RAM launchers are facing the wrong way ;)
I just flipped one of them ;)
Quote:
- I suspect the T-line on the helideck can come a lot more forwards, freeing a lot more space on the helideck for VERTREP.


on FNAN they are more tighter/aft (aiming line for the pilot I presume) But I can move some of it more forward.
Quote:
- One could decrease the cost of the radars even more by putting them on 120 degree angles instead of 90, as can be done by many of the current generation radars.
Politicians love that. shall look into it.


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heuhen
Post subject: Re: The Norwegian alternative ships ideaPosted: February 6th, 2022, 1:12 pm
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Hood wrote: *
I like the result a lot, looks very good and has everything I think you'd want a frigate to have and not completely break the bank balance.
thanks. Tried to keep it reasonable as possible but at the same time bring a new idea to the table.


I just noticed that the new Spanish Bonifaz class frigate, have similar weapon capacity as the Norwegian frigates, and I am not surprised at that, since they are build as a ASW frigate like the Norwegian frigate and not AAW frigate, you get either the on or the other.


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