Joined: September 8th, 2015, 8:26 am

May 11th, 2018, 8:26 am #71

http://www.quarryhs.co.uk/RED%20QUEEN.htm

The US Army also wanted a 40mm Bofors replacement and towards the end of the 1950s a new gun and cartridge were developed to meet this need. They chose a calibre which they had traditionally used, 37mm, but a new 37 x 219SR T68 cartridge was developed, featuring a shell with a long, tapered ballistic cap or windshield...

...The gun was also different; the biggest of the rotary cannon. In general principle rotary guns are similar to revolvers in that they have multiple chambers to speed up reloading, except that each chamber has its own barrel and the whole lot spin round under external power. The gun was designated T250, had six barrels and was fired at 3,000 rpm (reduced to 120 rpm for engaging ground targets).
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Joined: March 16th, 2017, 8:22 pm

May 11th, 2018, 3:23 pm #72

LordArpad wrote: Again, my preferred approach is layered:

1)  CAAM(-ER) for local area air and missile defence.
2) 76mm Strales with beam riding darts, basically still a missile, just not self propelled
3) 40mm Twin SR with 3P for missile cleanup and swarm defence

This is one layer more than what for instance the MM uses
Not for the USN (and yes, this thread goes beyond the USN.)  But for future USN major combatants, I would do:

1) SM-6 (likely only cruisers and destroyers)
2) SM-2 Active
3) ESSM Block II
4) RAM (SeaRAM or not)
5) Bofors 40mm with 3P ammo (and this is more for anti-surface use than anti-air)
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Joined: August 22nd, 2003, 8:05 am

May 11th, 2018, 11:46 pm #73

That makes sense. For the full thing I'll add Aster 30 Block i (air defence vessels) and Aster 30 (gp and asw vessels) for the EU
BBMW wrote:
LordArpad wrote: Again, my preferred approach is layered:

1)  CAAM(-ER) for local area air and missile defence.
2) 76mm Strales with beam riding darts, basically still a missile, just not self propelled
3) 40mm Twin SR with 3P for missile cleanup and swarm defence

This is one layer more than what for instance the MM uses
Not for the USN (and yes, this thread goes beyond the USN.)  But for future USN major combatants, I would do:

1) SM-6 (likely only cruisers and destroyers)
2) SM-2 Active
3) ESSM Block II
4) RAM (SeaRAM or not)
5) Bofors 40mm with 3P ammo (and this is more for anti-surface use than anti-air)
Sent from my SM-N9005 using Tapatalk

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Joined: June 9th, 2015, 10:05 am

May 16th, 2018, 9:04 pm #74

SM6 and equivalent are another layer, although intended to take out the aircraft before it fires its missiles. ESSM has a bit more range than the RAM so thats kind of another layer too. And I don't think its wise to assume each layer would consist of a single weapon anyway, there might be different requirements or limitations for different parts of a ship.
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Joined: March 16th, 2017, 8:22 pm

May 17th, 2018, 4:21 am #75

futurenz wrote: SM6 and equivalent are another layer, although intended to take out the aircraft before it fires its missiles. ESSM has a bit more range than the RAM so thats kind of another layer too. And I don't think its wise to assume each layer would consist of a single weapon anyway, there might be different requirements or limitations for different parts of a ship.
Each system has at least twice the range of the one lower down, sometimes more than that.  I hear big numbers for the SM-6 (up to 300 miles.)  The SM-2 Active should be the same as the latest version of the SM-2 (about 80 miles.  The ESSM is about 30 miles.  The RAM is about 5-6 miles.  The current Bofor 40mm naval mount claims a 12.5km range, so over 7 miles.  However I don't know if it could get a 3P shell out to that range with enough accuracy to get the shell inside it's lethal radius against an incoming AShM.
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Joined: May 28th, 2013, 7:37 pm

May 22nd, 2018, 11:57 pm #76

12km for Bofors is ballistic range has nothing to do with combat range. it is elevating the gun to 45º and firing, if the round has not a timer to explode it reaches eventually 12km.
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Joined: October 7th, 2009, 4:39 am

May 23rd, 2018, 3:39 am #77

Dili wrote: 12km for Bofors is ballistic range has nothing to do with combat range. it is elevating the gun to 45º and firing, if the round has not a timer to explode it reaches eventually 12km.
IIRC, effective range is quoted as around 8km in surface.
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Joined: August 22nd, 2003, 8:05 am

May 23rd, 2018, 8:46 am #78

I'd assume ~3km anti missile tops
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Joined: March 16th, 2017, 8:22 pm

May 23rd, 2018, 6:06 pm #79

Spoz wrote:
Dili wrote: 12km for Bofors is ballistic range has nothing to do with combat range. it is elevating the gun to 45º and firing, if the round has not a timer to explode it reaches eventually 12km.
IIRC, effective range is quoted as around 8km in surface.
LordArpad wrote: I'd assume ~3km anti missile tops
Those numbers work well for the purpose I'd intend it for.
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Joined: December 25th, 2004, 12:37 pm

July 7th, 2018, 4:37 am #80

The Phalanx Block 1B had a lot of features added:
https://slideplayer.com/slide/4565718/1 ... Threat.jpg
Ride Lyft.
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