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  1. #1
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    24.05.2003
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    Default Energa AT rifle granade

    The Energa is a Swiss design anti tank rifle granade introduced in 1948 and used well into the nineties of the last century by many counties. For the vast amount of different types of rifles the granade was going to be used for, many types of adepters were made that had a ø22mm dia. outside diameter so the tail of the rifle grenade fitted over the adepter. Later types of rifles had a standard ø22 mm dia. flash hider.
    A special propelling cartridge is inserted into the weapon and the grenade is placed over the flash hider after which the granade can be fired.
    The launch cartridge is placed in the tail of the grenade on delivery. The tail is closed with a black plastic cap.

    The dutch army nomenclature for the grenade is : Granaat, geweer, AT, “Energa”.

    Calibre : 75 mm
    Lenth grenade : 395 mm
    Weight : 600 grams
    Weight explosive charge : 300 grams
    Type of explosive : RDX (cyclonite)

    Effective range : 100 mtrs
    Max range (fired under a 45 degr. Angle) : 260 mtrs

    Penetration:
    200 mm steel or 500 mm concrete at 90 degrees impact angle
    100 mm steel or 250 mm concrete at 45 degrees impact angle

    Impact fuze No.:15.
    The firing pin cannot reach the detonator as the balls that fall in the recess in the firing pin and rest on the inner housing are locked up by the safety ring. The ring is kept in upper position by a spring. Upon firing, the safety ring moves backward -riding down the spring- , releasing the balls. The released balls fall outward and block the safety ring from moving upward again. Now the only thing keeping the firing pin away from the firing cap of the upper detonator is the firing pin spring. On impact, the firing pin is hammered into the firing cap of the detonator, exploding the detonator. The flame of this detonator is led down into the main detonator through the opened hole of safety cap No.1.
    The ring on top of the fuze is made of tungsten and prevents the grenade from ricocheting on low impact angles.

    Safety cap No.1:
    The safety cap exists of an aluminium cap placed over a brass pipe . A double zig zag pattern is machined into the outside of the pipe in which a radial placed pin on the inside of the aluminium cap fits. Below the cap –which closes the flame hole- a spring is placed with a small cap in the base. In rest , the pin rests in the fine zig zag pattern . Upon firing , the safety cap kicks back riding down the fine zig zag pattern and the spring; when the velocity is constant the spring pushes the cap forward, riding the coarse zig zag pattern forward. The safety cap, the spring and the small cap are thrown forward, opening the flame hole to the main detonator.

    Regards , DJH
    Attached Images Attached Images
    Last edited by PzGr40; 24.11.2008 at 18:03.
    You wanna make a piece of ammo look interesting? .......cut it!

    Looking for / Suche noch:
    -8,8cm Pzgr.40.

  2. #2
    Join Date
    21.10.2008
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    13

    Default

    The ENERGA is a grenade of Belgian design, not Swiss. It existed with different fuzes (when I find the time, I'll get back on this). I do not question Switzerland has used this, so many countries did use/copy it. It was fired by a more powerful BLANK-cartridge, which we call "Ballist", recognizable by the short top in comparison to a normal BLANK, and the white wax. We fired it from a special tromblon with aiming-aid mounted on the barrel of our FAL.

  3. #3
    Join Date
    08.05.2003
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    Default

    Going strictly by the facts it is from Liechtenstein.

    1. "ENERGA" stands for "Anstalt für die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA in Vaduz / Liechtenstein"
    2. "ENERGA" is sowith no designation for a particular rifle grenade since ENERGA had several designs in cluding HE-Frag and other items which were designed by different engineers.
    3. The inventor of this particular rifle grenade in question is Edgar William Brandt, the well known French designer of mortars and fuzes who also lived in Switzerland (Geneva/Genf) when ENERGA published it's patent claims.
    4. PRB in Belgium was likely the largest manufacturer of the ENERGA HEAT rifle grenades because ENERGA had no production facilities and was a design bureau only. So they had to outsource production or give licences to other manufacturers.
    Last edited by x; 25.11.2008 at 00:21.
    Ich suche Wissen!

    SCIENTIA POTENTIA EST!

    Wer nichts weiß muss alles glauben!

    Und wer toleriert uns?

    Studiert den Hooton-Plan, den Kaufman-Plan und den Morgenthau-Plan!

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

    https://www.youtube.com/watch?v=1UkmhtoXCPA
    https://www.youtube.com/watch?v=_aw9aRyjLcI

  4. #4
    Join Date
    01.07.2005
    Posts
    155

    Default

    ..x is just on the spot however, to complete the information:

    this particular rifle grenade has a long history.
    The first Energa rifle grenades were made in Switserland and adopted by the UK forces. (i will come back on this tomorow) The first designs suffered from a design fault according UK test reports. The reports mention a 'problem with the stabelising ring flying back to the shooter'.

    The 1943 Swiss rifle grenade manuals clearly shows these aluminum stabelising rings (i have one of these in my collection). Later on the rings were replaced with fins as we know them now.

    PRB is probably the biggest in production numbers however i guess MECAR as it was in the 50's is a runner up. Most of the UK and Dutch rifle grenades (as i know them) were produced by MECAR a subsidiary of PRB (a Belgium State Company) wich also includes LUMAL another Belgium aluminum processing plant.

    The Dutch 'No.4 Antitankbrisantgeweergranaat'(called Granaat, geweer, AT, “Energa” in the primary article from PZGR) has been produced in nummerous variations, especially the fuzes were subject to modifications..

    Bare with me, if i can find some time i will take some photographs.

    Great article DJ and Excellent reply X
    Last edited by Ammodillo; 24.11.2008 at 23:07.

  5. #5
    Join Date
    24.05.2003
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    Default

    Thanks for the awnsers. It explans a lot and adds interesting extra info to my posting. So in fact the patents were claimed in Switzerland.
    As I also understood that firing these riflegrenades was not really liked by soldiers because of the enormous kickback upon firing.
    Thanks and regards DJH
    You wanna make a piece of ammo look interesting? .......cut it!

    Looking for / Suche noch:
    -8,8cm Pzgr.40.

  6. #6
    Join Date
    08.05.2003
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    Derk, just the inventor was living at that time in Switzerland. Patents usually had to be claimed in every single country the inventor wanted a copyright protection in. So it comes that one and the same thing got patented about 20 times just in different countries.
    I have for example some German ENERGA patents what does not make the invention German at all.
    Ich suche Wissen!

    SCIENTIA POTENTIA EST!

    Wer nichts weiß muss alles glauben!

    Und wer toleriert uns?

    Studiert den Hooton-Plan, den Kaufman-Plan und den Morgenthau-Plan!

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

    https://www.youtube.com/watch?v=1UkmhtoXCPA
    https://www.youtube.com/watch?v=_aw9aRyjLcI

  7. #7
    Join Date
    16.04.2002
    Location
    Spanien
    Posts
    2,063

    Default

    Here ist the cover from a german patent of the ENERGA.
    Attached Images Attached Images
    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.

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