Maybe.Krupp built 508mm cannons by 1918?
It's difficult to say how reliable this is.Question is what is the source of the book for these guns?
Most likely the original data was in inches, and it was merely translated into millimeters.Naah but the calibre choice is weird knowing the Germans preferred different calibres:
281,305,380,420mm I would expect 460 or 480 then 500 or 520mm
Green Mace?I'm (mostly) sure I haven't posted this before. This is an item from an old databook used for a teaching exercise. All the other systems in the databook are either real, or things that were later cancelled (like boxed Ikara), just with the names filed off. So what is the real world or project equivalent to this? It is quoted as being a 1200 with 40 rpm ROF. The funny twin magazine seems familiar, but I can't quite place it?
This mounting?I'm (mostly) sure I haven't posted this before. This is an item from an old databook used for a teaching exercise. All the other systems in the databook are either real, or things that were later cancelled (like boxed Ikara), just with the names filed off. So what is the real world or project equivalent to this? It is quoted as being a 1200 with 40 rpm ROF. The funny twin magazine seems familiar, but I can't quite place it?
ooooo... so that one is in the book as "120mm Mk1" and the one I posted is the Mk2!
ANd where is that from? It's not the TAK120 that I'm familiar with.
It was posted in this thread. Apparently a late 1950s Bofors design, although the original post says it had a rate-of-fire of 70rpm.ooooo... so that one is in the book as "120mm Mk1" and the one I posted is the Mk2!
Confusingly, I’ve read that the little known single 120mm L50 was designed by Bofors for the early West German Navy for a larger class of destroyers that was cancelled in favor of smaller ships with 100mm French guns.It was posted in this thread. Apparently a late 1950s Bofors design, although the original post says it had a rate-of-fire of 70rpm.
I was wondering if there were some post ww2 plans for naval applications of the 88 mm caliber , especially for surface ships? With its caliber right in between the US/Italian 76 mm (3''), French 100 mm (3,9'') or UK's 113 mm (4.5'') it would have been a powerful but still light naval cannon for the '50's - '60's.
At ~3:30 in that video, it looks like a FRAM can has the Mk13 launcher in place of the aft gun. Am I seeing that correctly?
And if so, was that just for testing, or were more FRAM cans converted that way?
It's not a FRAM; the guns are definitely 5"/54 Mk 42s. I believe it's a C.F. Adams, somewhere after DDG-14. (-15 and later have the Mk 13 instead of Mk 11)
IDR 10/1983During the Assist investigation, various combinations of sensors, fire-control systems and weapons were evaluated. The easiest task, according to Signaal, was to select the radar and fire-control system.
The choice of weapon proved more difficult. Studies had shown that a gun with a calibre of at least 30mm and a high rate of fire was necessary. A twin 35mm mount was investigated at first but was found to have an insufficient firing rate: analysis had shown that a rate of at least 3,000 rounds/min, coupled with a very low dispersion, would be needed to counter the projected threat from supersonic missiles.
The second concept, designated SEM-30, was based on an Emerson Electric mount carrying four Mauser 30mm single-barrelled cannon. Problems of focussing the barrels to a single optimised aiming point, together with the relatively low MRBF (mean rounds between failure) of reciprocating guns, were however foreseen for this solution. In addition, further analysis had revealed that a firing rate even higher than 3,000 rounds/min was desirable against a manoeuvring target.
Signaal and the RNeth N therefore selected the General Electric GAU-8/A seven-barrel 30mm Gatling as the best overall weapon
for Goalkeeper, and this combination was designated SGE-30. The GAU-8/A has the advantages of a 4,200 rounds/min firing rate combined with low dispersion and high reliability.
IDR 6/1978SEM-30 is designed to 'kill' target missiles by direct hit, having a design dispersion of only 1.5 mrad. Each rigidly-mounted barrel fires at a rate of 800 rpm and a muzzle velocity of 1,400 m/sec. Mount elevation and azimuth training velocities are 80°/sec and
100°/sec, respectively, and accelerations in these axes are 125°/sec² and 200°/sec². Weight of mount is 5,416 kg and system weight totals 7,463 kg.
If it was, it may have been in one of the obsolete German zoll, which were 1/10, 1/11 or 1/12 of the various German feet (Fuß). The one used in Berlin was about 313.9 mm (from the potentially dubious https://en.wikipedia.org/wiki/German_units_of_measurement). The length of the German zoll could be something between 19.7 mm and 48 mm.Most likely the original data was in inches, and it was merely translated into millimeters.
From RINA's "The Naval Architect" November 1983, review of RNEE 1983:
• Vickers "Sea Dragon" CIWS.
• GAU-8A based system
• Project started in 1972, but not publicly announced until 1982
• Ericsson Giraffe C-band radar for detection (separate unit)
• On-mount tracking radar same as in the LWSW proposals - Marconi set (VFM-30?)
• Ferranti processing equipment
• Jokingly suggested that system designator of "GBG-30" means "Great British Gun"
• Mounting similar to Goalkeeper, without E/O and surveillance radars, and with slightly larger FCR
-RP1
The Naval Systems Division of FMC Corporation has recently received a $4.6 million contract to design, develop, fabricate and test an Electrothermal (ET) gun/autoloader mounted on a Mk 15 Phalanx trunnion assembly. The 60mm gun will fire a 3.5kg smart munition at 1.0km/s muzzle velocity.