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Thread: 30x211

  1. #1
    Join Date
    01.06.2016
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    34

    Default 30x211

    Hallo Leute
    Hier ein neuer Schnitt von mir.
    Frage: Hatt jemand ne Ahnung (Es handelt sich um die Patrone 30x211, von den Waffenwerken Brünn im Wk2 Entwickelt wurde , siehe
    ECRA-Sonderdruck 2001) Geschoss ohne Führungsband-für Glattrohr? Die Flügel lassen eigentlich nichts andres zu. Gibt es von dem Geschoss auch eine scharfe Version? Füllung des Geschosses besteht aus einer Art Kunstsoff (Bakelitt?) Die Form des Geschosses deutet auf Hohlladung hin.

    Gruß Gumbi1
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  2. #2
    Join Date
    08.05.2003
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    4,689

    Default

    Ja, es sollte ein HL-Geschoss sein.
    Die Tschechoslowaken haben viel herumprobiert - wie alle eigentlich.
    Ich suche Wissen!

    SCIENTIA POTENTIA EST!

    Wer nichts weiß muss alles glauben!

    Und wer toleriert uns?

    Ich bin verantwortlich für das was ich sage, nicht dafür was jemand anders versteht!

    https://blog.naanoo.com/musik/deutsc...xt-strophe-1-3
    https://www.youtube.com/watch?v=1UkmhtoXCPA
    https://www.youtube.com/watch?v=_aw9aRyjLcI
    https://www.youtube.com/watch?v=mcBZsRObnJk&feature=emb_logo
    https://flinkfeed.com/12-arten-auf-d...ipuliert-wirst

  3. #3
    Join Date
    16.04.2002
    Location
    Spanien
    Posts
    2,064

    Default

    Ja es gab auch eine scharfe Version davon.
    Das Projekt nannte sich "VYDRA".
    Stellvertretend für die drei in Göttingen verstorbenen sowie den verletzten Mitgliedern des Kampfmittelbeseitigungsdienstes Niedersachsen und in Anerkennung ihrer Verdienste, zeigt mein Avatar ein Abzeichen dieser Behörde.

    Suche immer Gurtglieder aller Länder bis Kaliber 35mm.

  4. #4
    Join Date
    12.07.2007
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    Default

    The gun was originaly developed in the mid 60's in caliber 28mm, later changed to 30mm. The designer of the HEAT round was Ladislav Urban.
    Note that the 30mm round is not fully inserted in the case. The round on the right is a 19mm necked 23x115.
    Bob
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    „A mind needs books like sword needs a whetstone, if it is to keep its edge“
    Tyrion Lannister

  5. #5
    Join Date
    08.05.2003
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    4,689

    Default

    Bob, WOW! Great image! Thanks a lot for sharing!
    Is the 19mm still 115mm long? Do any documents exist on this one?
    What is the case length of the 28mm?
    Ich suche Wissen!

    SCIENTIA POTENTIA EST!

    Wer nichts weiß muss alles glauben!

    Und wer toleriert uns?

    Ich bin verantwortlich für das was ich sage, nicht dafür was jemand anders versteht!

    https://blog.naanoo.com/musik/deutsc...xt-strophe-1-3
    https://www.youtube.com/watch?v=1UkmhtoXCPA
    https://www.youtube.com/watch?v=_aw9aRyjLcI
    https://www.youtube.com/watch?v=mcBZsRObnJk&feature=emb_logo
    https://flinkfeed.com/12-arten-auf-d...ipuliert-wirst

  6. #6
    Join Date
    12.07.2007
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    Czech Republic
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    786

    Default

    According to the article in "Historie a vojenství" 3/2008 - magazine of the military historical institute the length of the case for the 19 mm round is 115mm.
    I do not know the exact length of the 28mm round. There was an article in the czech "ECRA" magazine I am not with my computer right now.

    Bob

    „A mind needs books like sword needs a whetstone, if it is to keep its edge“
    Tyrion Lannister

  7. #7
    Join Date
    08.05.2003
    Posts
    4,689

    Default

    Bob, thanks!
    Does "Historie a vojenství" show the guns or gives more details on the ammo?????
    Ich suche Wissen!

    SCIENTIA POTENTIA EST!

    Wer nichts weiß muss alles glauben!

    Und wer toleriert uns?

    Ich bin verantwortlich für das was ich sage, nicht dafür was jemand anders versteht!

    https://blog.naanoo.com/musik/deutsc...xt-strophe-1-3
    https://www.youtube.com/watch?v=1UkmhtoXCPA
    https://www.youtube.com/watch?v=_aw9aRyjLcI
    https://www.youtube.com/watch?v=mcBZsRObnJk&feature=emb_logo
    https://flinkfeed.com/12-arten-auf-d...ipuliert-wirst

  8. #8
    Join Date
    12.07.2007
    Location
    Czech Republic
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    786

    Default

    Hallo,
    the article by Jan Haas is very short and says this:
    “Round 19 x 115 Vydra I
    Between the 50's and 60's the Czechoslovak army worked on the problem of APC armament (especially OT-62 (TOPAS) from the angle of effective fight against enemy armoured vehicles and APCs. Weapons of high ROF weapons of medium caliber, 82mm tarasnice T-21 and recoilless gun vz. 59 were considered. One of the many variants was a reconstruction of 23mm aircraft canon NS-23 to the caliber 19 mm. The reason was unsatisfactory muzzle velocity and energy of the original caliber for fight with armoured targets. In these years weapons for the ACP were also designed in calibers 23, 25, 28, 30 32 and 37 mm by the Zbrojovka Brno. Reconstructed canon was fitted for trials to the OT-62 TOPAS and OT-64 SKOT. For the round a case 23x115 was used. Another advantage was minimal use of new parts. Novelty of the round lies in the nonrotating HEAT round. A muzzle velocity of 899 m/s was reached during the trials. There were 5 different types of inert rounds used. A round with 6 to 7 grams of TNT/RDX 50/50 defeated 30 to 43 mm thick targets at 100 meters wit impact velocity of 500 m/s.
    The round in the collection of the VHU has a steel cylindrical projectile with a caliber (rigid/ not expandable) four fin stabilizer. Cartridge case is brass manufactured in 1958 in Vlarske Strojirny in Bohuslavice nad Vlari (code dtp), the factory does not exist today. Caliber of the projectile is 18,93mm, length 140,28mm. Length of round 202mm.
    Obtained by acquisition.”
    The round of 28mm is described in the excelent magazine of the cartridge collectors 4/1995.
    For dimensions please see picture.
    Bob
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    „A mind needs books like sword needs a whetstone, if it is to keep its edge“
    Tyrion Lannister

  9. #9
    AZ16 is offline Erfahrener Benutzer User
    Join Date
    01.11.2011
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    147

    Default

    Hello,

    I come on this interesting thread but I don't really understand if these three projectiles with "spike nose" are HEAT or AP shot (non explosive).
    Sorry for my ignorance.

    Regards

  10. #10
    Join Date
    12.07.2007
    Location
    Czech Republic
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    786

    Default

    Hi, they are HEAT rounds.
    Yes it is somewhat confusing discusing muzzle velocity with HEAT rounds but that was only one of the rounds.
    I guess the autor tried to put max info in a short article.
    Bob

    „A mind needs books like sword needs a whetstone, if it is to keep its edge“
    Tyrion Lannister

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