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  1. #1
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    20mm to 35mm Oerlikon

    Hi thanks for the 20x128mm info.
    has anyone got sectioned photo or pics of 20mm to 35mm Oerlikon nose and base fuzes, many thanks Peter

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    35 x 228 cartridges for the Oerlikon KDA, KDB, KDC and KDE guns

    Hi Peter , here some info:

    In the last year I have been able to collect a nice set of 35x228 shells for the Swiss Oerlikon KDA, KDB, KDC and KDE anti aircraft gun series. The guns are in use as towed guns, self propelled AA guns, mounted on armoured vehicles and personel carriers, and are placed on naval vessels.
    Here some picturs of cartridges, the guns and some explanation about the shells:
    Note that some shellcases are straight and some have a groove just below the bottleneck of the shellcase, The ones with the groove are for belt fed weapons, the ones without are fired from clips containing six cartridges.
    Shellcases are always steel, painted dark green or greyish green.
    Type 1:
    APHEI-T , Armour Piercing High Explosive –Tracer shell made by Diehl Germany
    A hardened steel body with a nosecap filled with an incendiary composition. Note the intricate fuze, containing two self destruct mechanisms and 5 safety devices.
    The shell is meant to explode inside the target after piercing it.
    It is suitable for a wide range of targets, exept heavily armoured targets.
    Type2 :
    APHEI, Armour Piercing High Explosive Incendiary, Swiss design from Oerlikon, designated PSBH/H. Designed in 1962. Hardened steel body with an aluminium windshield. Suitable for light to medium armoured targets. The fuze has a self destruct device.
    Type 3 :
    APHEI-T, Armour Piercing High Explosive Incendiary -Tracer, Swiss design from Oerlikon, designated PLD-044. Hardened steel body with an aluminium windshield. Suitable for light to medium armoured targets. The fuze has a self destruct device. It penetrates a 15 mm thick steel plate at 1000 mtrs @30 degrees. Vo.:1041m/s.
    Type 4 :
    HEI , High Explosive Incendiary. Swiss design from Oerlikon, designated SSD-048. It has a mechanical base fuze BDZ357. The projectile has a hardened nose, giving it a limited capacity to pierce lightly armoured targest before exploding. Mainly meant to be used against aircraft.
    Below the nose and above the explosive charge (blue) a zirconium (black) incendiary element is placed. The fuze has a self destruct device. Vo.: 1175 m/s.
    Type 5 :
    HEI , High Explosive Incendiary. Swiss design from Oerlikon, designated SSD-048. It has an Electric base fuze BDZ363. The projectile has a hardened nose, giving it a limited capacity to pierce lightly armoured targest before exploding. Mainly meant to be used against aircraft. Due to the electronic fuze the shell is more sensitive and has a shorter reaction time. The fuze has a self destruct device. Vo.: 1175 m/s.
    Type 6 :
    3,5cm Sprg B G Patr. 3,5cm High explosive shell of Swiss design. It is fuzed with the AZZ65 (impact time fuze 65) which can be seen in cutaway in Type 7. The shell is produced by Oerlikon. The fuze has a self destruct device.
    Type 7 :
    HEI, High explosive Incendiary shell of Swiss design and colour code. The projectile is designated MSD-042. It is fuzed with the AZZ65 (impact time fuze 65). The shell is produced by Oerlikon. The fuze has a self destruct device.
    Type 8 :
    HE, High Explosive shell, manufactured in Holland by EMZ (Eurometaal Zaandam). The projectile is designated MSD-042 It is fuzed with the KDZ228 impact fuze. The fuze has a self destruct device. Vo.: 1175 m/s.
    Type 9 :
    HE, High Explosive shell, manufactured in Holland by EMZ (Eurometaal Zaandam).The projectile is designated MSD-042. It is fuzed with the KDZ-228 impact fuze. The fuze has a self destruct device (cutaway model of type 8 ). Vo.: 1175 m/s.
    Type 10 :
    APDS-T Armour Piercing Discarding Sabot –Tracer. Swiss design, designated TLD-038. The penetrator has a weight of 294 grams and is made of tungsten carbide. Vo:1385m/s
    It penetrates a 100 mm block at 90 degr. at 1000 mtrs., or a 40 mm thick steel plate at 30 degr. from horizontal at 1000 mtrs.
    Type 11 :
    APDS-T Armour Piercing Discarding Sabot –Tracer. German design by Rheinmetal, specially designed against the Hind helicopter. Project was cancelled at the end of the cold war. No further info available.
    Type 12 :
    FAPDS-T , Frangible Armour Piercing Discarding Sabot- Tracer, Same as the APDS, exept for the fact that the penetrator breaks to small pieces after penetration, fanning out in a cone shaped cloud of debris. Especially meant for anti misile use.
    The 35x228 mm FAPDS-T on trials penetrated 2 steel plates, 10 and 30 mm (with 60 mm of free space between both), angle 45° and range 2000 mtrs.
    Type 13 :
    FPDS , Frangible Piercing Discarding Sabot, experimental. Many experiments were carried out with different shapes of windshield and/or projectile body. No further info available.
    Type 14 :
    APFSDS-T, Armour Piercing Fin Stabilised Discarding Sabot- Tracer. Fires a dart shape formed projectile. Rheinmetal experimental design.
    The 35x228mm APFSDS-T (388g penetrator at1417m/s) is stated to penetrate 120 mm @90 degr @1000 mtrs.
    Type 15 :
    Break up, Live practice very short range projectile of Dutch design. It consists of a thin plastic body filled with iron powder. In the barrel it is held together, after leaving the barrel the centrifugal force rips open the body dispersing the iron powder just before the firing vehicle.
    An advantage is that the weapon will function and fire on its full working pressure without the need for a large shooting range.
    Type 16 :
    Target practice.
    Regards DJH 8)
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    Last edited by pzgr40; 9th July 2008 at 09:30 PM.

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  4. #3
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    Hi, here's a couple of 35mm's either side of a 45mm CTA apfsds round.

    Dave.
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    20mm Oerlikon

    Hi, here's a few sectioned 20mm Oerlikon rounds.

    Dave.
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  6. #5
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    Very nice , I only have one cutaway model of this 20 mm Oerlikon type .

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    Thanks.

    Here's a sectioned APDS projectile for the 20mm.
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  8. #7
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    A very interesting addition to the collection which I changed into a cutaway model straight away, the 35x228 HE type DM21 with the A-ZZ DM331 (Impact - Self destruct fuze German model 331). In top of the fuze, a self destruct disc is placed, as with the German 2 cm shells. An explanetory drawing about the functioning of the fuze is added.
    Regards DJH
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    Last edited by pzgr40; 27th January 2009 at 06:05 PM.

  9. #8
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    That APDS 20mm cut through is very nice as are all the others i hasten to add, But i do like those sabot rounds.
    Regards Weasel.

  10. #9
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    354x22 Tubulair

    The newest very interesting addition to the 35x228 cartridge collection; a 35x228 experimental Tubulair cartridge. The tubulair cartridge is a Dutch experiment,designed and tested by the former NWM factories in ‘s Hertogenbosch. I suppose the thought was to make a projectile in the shape of a knive edged pipe to reduce the friction with the air. A boat tail shaped sabot (black) is fixated to the pipe body (blue) by means of twelve nylon shear pins, enshuring the sabot is kept in place three millimeter above the edge of the sabot during storage, handling and firing.
    As I have no further info about this cartridge, I suppose it functions as follows; Upon firing, the inertia sets back the pipe (blue). The base of the pipe has a tooth grip ring, which grips in the sabot, so enshuring the pipe will take over the rotation of the sabot. Four channels at 90 degrees each are drilled into the sabot, ending up in the pipe piece. I do not know if the grey charge in the four holes of the body, locked up by a cap are tracers, either small seperation charges to seperate the pipe from the sabot.
    Upon impact, the projectile would have cut through the target like a high speed apple corer (Apfelbohrer). It is not known what the ballistic test results were, or why the experiment was ended.

    Regards, DJH
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    Last edited by pzgr40; 22nd November 2010 at 12:20 AM.

  11. #10
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    The idea of tubular bullets goes back to the 19th century IIRC, and it resurfaces from time to time.

 

 
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