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German fuze ZZs/29
- Thread starter MINENAZ16
- Start date
have a look in B. Delserts "La Flak". There are no original drawings - but they are better than nothing. An other drawing is in the belgian document "Les fusees allemandes" ;-)
The fuze on the 8 cm is a Zt.Z. S/29 o.A.Z. (without percussion system). The fuze is a variation of the normal Krupp Zt.Z.S/29 which was used for shrapnel shells in caliber 10 cm and larger.
This "three ring" fuze made it possible to use a faster burning powder which resulted in a more accurate burning time. As slower a time train powder burns as more inaccurate the burning time becomes, especially when the projectile reaches high altitudes which is the case for anti aircraft projectiles.
The fuze on the 8 cm is a Zt.Z. S/29 o.A.Z. (without percussion system). The fuze is a variation of the normal Krupp Zt.Z.S/29 which was used for shrapnel shells in caliber 10 cm and larger.
This "three ring" fuze made it possible to use a faster burning powder which resulted in a more accurate burning time. As slower a time train powder burns as more inaccurate the burning time becomes, especially when the projectile reaches high altitudes which is the case for anti aircraft projectiles.
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Hello,
Thank you Alpini but everything is confused for me when I read old documentations about WW1 Flak 8cm and 8.8cm.
8cm L3.8 is described with a ZtZs/29 and 8.8cm L3.6 with ZtZs/24.
So what is exactly the fuze I show in the first post with three rings (the shell is given as a 8cm L/3.8) ?
This fuze is very different from the ZtZs/29 (pictures below).
Regards.
8cmL/3.8:
ZtzS/29:
Thank you Alpini but everything is confused for me when I read old documentations about WW1 Flak 8cm and 8.8cm.
8cm L3.8 is described with a ZtZs/29 and 8.8cm L3.6 with ZtZs/24.
So what is exactly the fuze I show in the first post with three rings (the shell is given as a 8cm L/3.8) ?
This fuze is very different from the ZtZs/29 (pictures below).
Regards.
8cmL/3.8:
ZtzS/29:
the upper fuze is correctly the Zt. Z. S/29 for the 8 cm Flak. The original Krupp Dopp. Z. S/29 looks the same as this one but has the typical Krupp percussion system.
The lower is a Zt. Z. S/29 too, but with two rings for 8,8 cm Flak. I don't know why they did no longer use the S/43 o.A.Z. on 8,8 cm. The manufacturing cost of a Dopp. Z. S/43 o.A.Z. made from spare material compared to a Zt. Z. S/29 o.A.Z. should be the same. My only guess is (again) that the altitude of bursting could be set more precisely with a 29 sec. fuze than with a 43 sec. fuze. This problem was solved with mechanical time fuzes at this time but production capacity was to small to equip all AA-Shells with mechanical fuzes.
PS: I have to correct my upper post: The name of the fuze is just Zt. Z. S/29 and not Zt. Z. S/29 o.A.Z. The word Zeitznder (Zt.Z.) says that no percussion system is present. The prefix o.A.Z (without percussion system) was used on double action fuzes only.
The lower is a Zt. Z. S/29 too, but with two rings for 8,8 cm Flak. I don't know why they did no longer use the S/43 o.A.Z. on 8,8 cm. The manufacturing cost of a Dopp. Z. S/43 o.A.Z. made from spare material compared to a Zt. Z. S/29 o.A.Z. should be the same. My only guess is (again) that the altitude of bursting could be set more precisely with a 29 sec. fuze than with a 43 sec. fuze. This problem was solved with mechanical time fuzes at this time but production capacity was to small to equip all AA-Shells with mechanical fuzes.
PS: I have to correct my upper post: The name of the fuze is just Zt. Z. S/29 and not Zt. Z. S/29 o.A.Z. The word Zeitznder (Zt.Z.) says that no percussion system is present. The prefix o.A.Z (without percussion system) was used on double action fuzes only.
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If we talk about the same document it reads "Zt. Z. S/24 range: 2 - 29 sec." ;-) So it should be a mistake (there are many more too). I have never seen any Krupp fuze with 24 sec in relation to Flak.