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28cm Kanone Eisenbahn - Railway Gun

28cm kruz Bruno L40

28cm "kruz Bruno" SK L/40 Kanone Eisenbahn
This 1936 Programme gun was one of the series of four of the same calibre that differed principally in barrel length and were named accordingly in barrel length and were named accordingly; this was the shortest of the four.
The gun was the 28cm SK L/40 naval gun mounted in a ring cradle with the hydro pneumatic recoil system underneath.
The mounting was of much the same design as that of the 24cm Theodor Bruno, suitably enlarged; a box girder structure into which the gun was trunnioned. Folding platforms and handrails were fitted and the assembly was mounted on two ten-wheel bogies. A limited degree of traverse was available by moving the mounting across the rear bogies bolster, but the gun was usually emplaced on a portable turntable. Eight guns of this type were built and issued in 1937-8.

28cm lange Bruno SK L/45

28cm "lange Bruno" SK L/45 Kanone Eisenbahn
The second of the 1936 series of 28cm guns, this had the long barrel and was thus called lange Bruno. The ordnance was the 28cm SK L/45, another ex-naval weapon. Only three weapons were built in 1937.
The mounting was the same as that used with the short model, a box girder body riding on two ten wheel bogies. The lange Bruno was slightly lighter than the shorter kurz Bruno, because although the barrel was longer it was also of thinner section.

28cm "Schwere Bruno" L/92 Kanone Eisenbahn
The third 1936 gun in 28cm calibre heavy Bruno was based on the ordnance of the 28cm Kusten Kanone L/42, a weapon that had been superseded in coast defense but two of which were available from old stock. The mounting was the same as that used for the other Bruno guns, and the two equipments were built and issued in 1938.

28cm "Bruno neue" Kanone Eisenbahn
In the spring of 1938, while the earlier series of Bruno guns were reaching completion, the army reviewed their performance and deciding it was insufficient.
After studying the designs Krupp replied that, since the army had specified that the programme was to be completed by 1939, modification involving the design and manufacture of new barrels could not be done in the time. The army accepted this and instructed Krupp to proceed with the design of a new equipment, the delivery date for which was not finalized. Eventually  three weapons were manufactured : one delivered in November 1940, one in July 1941 and the last in February 1942. It had been intended to build more but the better performance of the 28cm K5 (E), together with a ballistic irregularity that defied solution, caused the project to be cancelled after the third delivery.

28cm Kanone 5 Eisenbahn
 
Specification :

Brief Description

Calibre length of gun Caliber Barrel
Weight(kg)
Elevation Axle weight
in action (kg)
Max.Range*
28cm Kanone (E)
'kurz Bruno'
283mm
11.14"
11200mm
36.75 ft
40 45,300 +10° to +45° 2 x 5 129,000 14300m
28cm Kanone (E)
'lange Bruno'
283mm
11.14"
12735m
41.78 ft
45 39,800 +10° to +45° 2 x 5 123,000 16800m
28cm Kanone (E)
'schwere Bruno'
283mm
11.14"
11930m
39.14 ft
42 40,850 +10° to +45° 2 x 5 118,000 16800m
28cm Kanone (E)
'Bruno neue'
283mm
11.14"
16400mm
53.81 ft
58 55,260 +0° to +50° 2 x 5 150,000 36600m
28cm Kanone 5 (E) 283mm
11.14"
21539mm
70.08 ft
76 85,000 +0° to +50° 2 x 6 218,000 see performance
28cm KE Photo Gallery click to expand

28cm Kruz Bruno L/40 KE
28cm kruz Bruno L/40 KE

28cm lange Bruno
28cm lange Bruno KE

28cm schwere Bruno
28cm schwere Bruno KE

28cm Schwere Bruno KE
28cm schwere Bruno KE
Photos contribution from Hans Urban more
 

28cm K5 firing..
click to expand
k5 firing
28cm K5 firing..
Photos contribution from Hans Urban more

References / Credits :
Deutsche Eisenbahn Geschützen -
Gerhard Taube - Motor Buch Verlag - ISBN 3-613-01352-5 more..
Die schweren Geschütze der Welt - Franz Kosar - Motor Buch Verlag - ISBN 3-613-02204-4 more..
German Artillery of World War II - Ian V.Hogg - Greenhill Books - ISBN 0887403220 more..
Eisenbahn Geschütze der Welt - Franz Kosar - Motor Buch Verlag - ISBN 3-613-01976-0 more..
German Railroad Guns in action - Joachim Engelmann - Squadron - ISBN 0-89747-048-6 more..

 
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