DEU - MK 103 (30 mm kanón)

MK 103
MK 103 MK 103
Original name:
Original Name:
MK 103
Rheinmetall-Borsig, Düsseldorf, Berlin and Unterlüß [ url=/category/view/503618/] [img_6 comment = Germany (DEU)][/img_6 ][/url]/ [img_6 comment = Great German Empire (1943-1945)] http: //vcdns.valka. cz/images/flags/deu2.gif[/img_6]
Production period:
Production Period:
Made pieces:
Number of Produced:
Prototype produced:
Prototype Built:
Do 335 B-2
Fw 190 A-6/R3
Fw 190 F-8/R3
Hs 129 B-1
Me 410 B-2/U 1
Technical data:
Technical Data:
141 kg 311 lb
30 mm/1.81 inch
Barrel length:
Barrel Length:
1338 mm 4ft 4,68in
Overall length:
Overall Length:
2335 mm 7ft 7.93in
Ammunition used:
Ammo Used:
Anti-tank with tungsten carbide core (355 g)
jerky M-closure (330 g)
APCR (12.52 oz)
HEM (HE Mine shell) (11.64 oz)

Maximum range:
Maximum Range:
1.2 km 0.7 mi
Shooting speed:
Rate of Fire:
380 - 420 rpm 380 - 420 rpm
Muzzle velocity:
Muzzle Velocity:
860 - 940 m/s 860 - 940 ft/s
The MK 103 cannon was a high-performance weapon, but due to its considerable size and large weight, it was quite difficult (if not impossible) to install it in smaller fighters, such as Bf 109 K-4. This weapon was tested as a defensive, ie mobile cannon.

APCR anti-tank missiles pierced the armor thickness. 42-52 mm at an angle of 60 ° for a distance of 300 m or 75-95 mm at an angle of 90 ° for a distance of 300 m.
Explosive M-geschloss ammunition was made of high-quality thin-walled steel and a larger proportion of explosives.
The original specification for the MK 103 called for it to fit inside an aircraft's engine mounting (possibly as a Motorkanone, firing through a hollow propeller hub) , however, it proved to be too large and heavy to fit into small fighters like the Bf 109 K -4.

APCR - Armor penetration: 1.65-2in/60 °/656 ft or 3-3.7in/90 °/656 ft.
HEM - The mine shell is a particular form of HE shell was using a thin-walled steel casing of high tensile strength, a larger explosive charge can be used and reached a higher-detonation-power.

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MK 103

Air cannon with a simple breech manufactured by Rheinmetall Borsig, designed mainly for the armament of Luftwaffe fighters. This cannon was to be installed not only in the wings, but was also to be placed between the engine blocks and shoot the hollow shaft of the propeller.

Cannon MK 103 used for its automatic function of taking gases from the barrel. It had a locked breech, which was locked by swinging bolts located on the bolt. The charge was fired by an electrical impulse. The remote control of the whole weapon was electro-pneumatic.

It was supplied with a crumbling ammunition belt, for the storage of which box boxes were used. The belt itself is after the passage of weapons (without cartridges - the difference compared to MK 108) crumbled into individual articles. The belt contained ammunition with various types of bullets. It was possible to combine penetrating-incendiary (PZ), penetrating-fragmentation (PTř), incendiary (Z) and explosive projectiles (Tr).

The big disadvantage of these cannons, however, was their considerable weight. To this were added the large demands on the installation space and the very noticeable impact effect of firing on the aircraft (note: locked conclusion). For these reasons, the company Rheinmetall-Borsig began to develop a new cannon, later known as MK 108.

Example of ammunition used:

30 mm penetrating-shattering

Cartridge weight: 964 g
Bullet weight: 530 g
Dust weight: 97 g
Hub length: 298 mm
Muzzle velocity: 700 m/s

30 mm jerky

Cartridge weight: 778 g
Bullet weight: 330 g
Dust weight: 110 g
Hub length: 298 mm
Muzzle velocity: 900 m/s

- L. Popelínský, Aircraft Rifle and Missile Armament, Our Army 1997, ISBN 80-206-0531-2
- J. Schmid, Aircraft 1939-45 (Germany 1/2), Jiří Fraus 1993, ISBN 80-85784-02-5/80-85784-10-6
- author's archive
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Emergency PL mounting MK 103.
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