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Old 01-04-2007, 19:26 PM   #1 (permalink)
SRB
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COALITION SPA 2x152mm



CRAZY RUSKIES
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Old 01-06-2007, 04:50 AM   #2 (permalink)
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Are you guys stunt with this monster or what?
I mean it isnt not every day to see twin barrel SPA , right?
Any know anything about this machine?
I hear there is 2 crewe member inside tank body, turret is automatic, auo loaders are capable to load guns in all position , R.O.F. 16 s/min, diferent design of barrel mouth to me very cool look are this holes but I dont know how is that pratical beacuse of dust and powder it need constant cleaning maybe in finial version it will be classic muzzle brakes.

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Old 01-06-2007, 05:06 AM   #3 (permalink)
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I wouldn't want to be on the receiving end!
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Old 04-03-2008, 06:38 AM   #4 (permalink)
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I have read somewhere that it is based on the experience of the naval twin 152mm mount – except the guns mechanisms (breach’s) is placed on its side, so as to minimize the width of the turret.

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Old 04-10-2008, 15:03 PM   #5 (permalink)
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A bit more pictures of сoalition sv:

)))

http://img166.imageshack.us/img166/5352/564005fm0.jpg

http://www.btvt.narod.ru/3/koalition_sv/kaolizia.gif press yelow link to open the picture
http://www.btvt.narod.ru/3/koalition_sv/transmash.gif
Ïåðñïåêòèâíàÿ ñàìîõîäíàÿ àðòèëëåðèéñêàÿ óñòàíîâêà «Êîàëèöèÿ-Ñ» (on Russian)

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Old 04-10-2008, 20:01 PM   #6 (permalink)
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it makes counter-battery twice as effective, looks to tall for rail tunnels, a break down takes out twice the number of guns, reloading takes twice as long etc. not impressed.
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Old 04-13-2008, 09:11 AM   #7 (permalink)
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What's the point of double barrel artillery piece? Barrels are noticeably a lot shorter, meaning less range, which is not typical of Russian artillery. Their canons are usually large for range, and antiarmor destruction in direct fire.

Russians view artillery as direct fire as well as indirect fire weapons unlike western forces.

It must have one hell of autoloader if it can simultaneously load two shells, and bags. Imagine firing both canons at the same time. Heh.

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Old 04-13-2008, 09:45 AM   #8 (permalink)
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it makes counter-battery twice as effective, looks to tall for rail tunnels, a break down takes out twice the number of guns, reloading takes twice as long etc. not impressed.

That's a MSTA SPA modified to fit two howitzers. You are right about breakdowns, but supposedly it has automatic reloaders of some kind, which I am not sure what autoloader it has, however, as for counter-battery, I think there is a reason for the twin barrels as it increases rate of fire, so it can fire a higher volume of shells in shorter period of time in a shoot, and scoot manuveurs.

I would be more impressed if the canons could traverse independently from each other. That would be a lot more impressive, then just glueing two canons together. They both appear to be fixed to a single traverse turret. No separate horizontal, or vertical targeting. This would allow more firepower being spread out in a area, than just delivering on a single target.

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Old 04-13-2008, 10:43 AM   #9 (permalink)
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New Russian 152mm twin

The main advantage - rate of fire of 16 shots in a minute (for comparison at PzH2000 it is 10 shots in a minute).
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Old 04-13-2008, 15:23 PM   #10 (permalink)
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double-barrel seems to be ´in´

swe.-fin. Amos double mortar ,
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File Type: jpg s_cv90_amos.jpg (94.4 KB, 73 views)
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Old 04-14-2008, 00:25 AM   #11 (permalink)
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double-barrel seems to be ´in´

swe.-fin. Amos double mortar ,
There was always double barrel mortars. That's nothing new. Howitzers, or guns different story. Mortars are relatively light weight for for SP chasis, sometimes too light weight, hence why they put two mortar tubes of 120mm, or dozens of 82mm mortars such as what the Chinese have. Howitzers, and guns that are 152.4mm, or 155mm are much bigger not just in diameter, but the barrels are much longer at least 39 calibers up to 52 calibers for most artillery canons. Naturally, partly due to that reason, howitzers, and guns have longer range.

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Old 04-14-2008, 03:29 AM   #12 (permalink)
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Originally Posted by el_guapo View Post
There was always double barrel mortars. That's nothing new. Howitzers, or guns different story. Mortars are relatively light weight for for SP chasis, sometimes too light weight, hence why they put two mortar tubes of 120mm, or dozens of 82mm mortars such as what the Chinese have. Howitzers, and guns that are 152.4mm, or 155mm are much bigger not just in diameter, but the barrels are much longer at least 39 calibers up to 52 calibers for most artillery canons. Naturally, partly due to that reason, howitzers, and guns have longer range.
Didn´t know that . All I´ve heard of was some swiss underground 2-barrel mortar system and Chinese 4-barrel system . Thanks.
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Old 04-29-2008, 18:09 PM   #13 (permalink)
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New Russian 152mm twin

The main advantage - rate of fire of 16 shots in a minute (for comparison at PzH2000 it is 10 shots in a minute).
I disagree. The "per minute" ROF is not so important.
This is all about MRSI (multiple rounds simultaneous impact) - it shoots probably 6 or 8 shells as a system and then runs (shoot & scoot tactic to dodge counter-artillery fire). MRSI is possible due to quick (electronic) calculations and variable propellant (varying quantity of charges) plus pre-programmed change of elevation between shots. Strong charge/high elevation + medium charge/medium elevation + small charge/small elevation yields the same impact point. The shells arrive in a time window of just few seconds.

A good MRSI attack leaves no opportunity for observation and correction, but has a huge surprise effect (enemy caught in formation, not in cover, not buttoned up). And it takes only few seconds, so the SPH can run away asap.
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Old 04-29-2008, 18:30 PM   #14 (permalink)
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I disagree. The "per minute" ROF is not so important.
This is all about MRSI (multiple rounds simultaneous impact) - it shoots probably 6 or 8 shells as a system and then runs (shoot & scoot tactic to dodge counter-artillery fire). MRSI is possible due to quick (electronic) calculations and variable propellant (varying quantity of charges) plus pre-programmed change of elevation between shots. Strong charge/high elevation + medium charge/medium elevation + small charge/small elevation yields the same impact point. The shells arrive in a time window of just few seconds.
MRSI also depends on ROF.
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Old 04-29-2008, 18:56 PM   #15 (permalink)
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The relationship is not linear. You cannot tell with certainty how many shells fit into an MRSI strike if you only know the rpm
(rpm for first minute - later minutes have lower rpm anyway).
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