Davehal9000
Active Member
Am trying to find or if I have to make a copy of the fuze I need for a Russian S-5-O/S-5O illumination rocket. I can't find much data on that model of rocket. Anyone have any info as to which fuze is correct?
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Proper fuze for Russian S-5O Illumination rocket?
- Thread starter Davehal9000
- Start date
Bellifortis
Well-Known Member
Hallo,
I'm baffled with the functioning of this type rocket. The rocket motors are all the same and are closed towards the front by a bulkhead. The frontal warheadtube contains another metaltube, in which the flare with parachute are positioned. This inner tube is also closed by a metallic bulkhead towards the front. I do not understand on how the flare can be ignited and expelled from that inner tube. Also, the inner tube has to be expelled from the warhead-section-tube. Is this rocket meant to function in the air (by a timefuze) or is it supposed to be shot at the ground and the warheadtube acting as a mortar from which the inner flare-container-tube is shot into the air. I can not see on how the firetransfer should work and how the rockettube and warheadtube are seperated. Can anyone clarify ?
Regards,
Bellifortis.
I'm baffled with the functioning of this type rocket. The rocket motors are all the same and are closed towards the front by a bulkhead. The frontal warheadtube contains another metaltube, in which the flare with parachute are positioned. This inner tube is also closed by a metallic bulkhead towards the front. I do not understand on how the flare can be ignited and expelled from that inner tube. Also, the inner tube has to be expelled from the warhead-section-tube. Is this rocket meant to function in the air (by a timefuze) or is it supposed to be shot at the ground and the warheadtube acting as a mortar from which the inner flare-container-tube is shot into the air. I can not see on how the firetransfer should work and how the rockettube and warheadtube are seperated. Can anyone clarify ?
Regards,
Bellifortis.
Davehal9000
Active Member
My understanding is the S-5O/S-5-O (which is it??) doesn't have a chute. The S-5-O1 is the parachute flare rocket.
The S-5-O1 for sure uses the VB-5 fuze.
My issue here may be finding the right nomenclature. Have found reference to both an S-5O and an S-5-O. If they are the same thing, it uses the V-5M1. If they are two different rockets, who knows.
This photo mentions another fuze
The S-5-O1 for sure uses the VB-5 fuze.
My issue here may be finding the right nomenclature. Have found reference to both an S-5O and an S-5-O. If they are the same thing, it uses the V-5M1. If they are two different rockets, who knows.
This photo mentions another fuze
Last edited:
Davehal9000
Active Member
"Rockets S-5O had a length of 885 mm without fuse, 230 mm tail swing. Weight 4.92 kg projectile. The projectile equipped with a remote handset I-71 with a response time to 17 seconds.
Upon ignition of the fuel composition of the light intensity reached 1MkD. torch burning time was 18.3 seconds. Launch C-5O was equipped with a parachute, let us reduce the speed of 15-20 m / s. The height of the start of the torch glow of about 640 meters, the height of the end of the glow -. About 370 m tabular firing range missiles S-5O was 3 km."
http://armyman.info/aviaciya/oruzhie/rakety-vp/868-s-51955.html
Upon ignition of the fuel composition of the light intensity reached 1MkD. torch burning time was 18.3 seconds. Launch C-5O was equipped with a parachute, let us reduce the speed of 15-20 m / s. The height of the start of the torch glow of about 640 meters, the height of the end of the glow -. About 370 m tabular firing range missiles S-5O was 3 km."
http://armyman.info/aviaciya/oruzhie/rakety-vp/868-s-51955.html
Bellifortis
Well-Known Member
Hallo Davehal9000,
the google translations of the page you show are absolute gibberish. A pity that I don't understand russian. Could "I-71" be a timefuze with 17sec. delay ? In the above report also a parachute is mentioned.
regards,
Bellifortis.
the google translations of the page you show are absolute gibberish. A pity that I don't understand russian. Could "I-71" be a timefuze with 17sec. delay ? In the above report also a parachute is mentioned.
regards,
Bellifortis.
Davehal9000
Active Member
Pretty sure I-71 is the fuze. It is a time delay fuze. Just can not find any photos of it. The Czechs reference the sa.e fuze. Wonder if it's not an older fuze that was phased out?
Bellifortis
Well-Known Member
Can anyone here explain the different first letters in russian fuze designations. Mostly it's "V"or"W" depending on how you translate, "N" and the above "I". What do these letters stand for ? As with other russian munitions desiganations these letters must stand for a word. So, what V , N , and I stand for ?
Regards,
Bellifortis.
Regards,
Bellifortis.
Davehal9000
Active Member
"V" would be взрыватель, Russian for Fuze
microplastic
Well-Known Member
Does anyone have a sectional drawing of this VB-5 fuze? Thanks!
Eggburt1969
Well-Known Member
I have the same diagrams of the VB-5 (ВБ-5) as Chris posted. It's basically a modified V-5/V-5M (В-5/В-5М) type fuze, with the lower pyrotechnic self destruct removed and igniferous and not detonative output.
The inner body of the VB-5 now contains a pyrotechnic delay system, which controls initiation of the lower detonator in the slider. The detonator's output initiates the power magazine, which is likely black powder.
The V/W naming is simply down to transliteration standards, especially if the country doesn't use the letter 'V'.
The I-71 (И-71) may be another designation for one of aforementioned the fuzes, or a separate fuze. It's very common for Soviet/Russian aerial fuzes to have an I-xxx code, as well as an index code, and sometimes other designations.
Not sure what the T-5-O (Cyrillic Т-5-О or Т-5-0?) fuze is, though it may suggest a variant of the T-5? However the original T-5 fuze had a larger maximum diameter (≈63 mm and not ≈40 mm) and was much heavier (≈710 g and not ≈265 g), plus its arming system was designed for a high set-back and spin environment.
The inner body of the VB-5 now contains a pyrotechnic delay system, which controls initiation of the lower detonator in the slider. The detonator's output initiates the power magazine, which is likely black powder.
The V/W naming is simply down to transliteration standards, especially if the country doesn't use the letter 'V'.
The I-71 (И-71) may be another designation for one of aforementioned the fuzes, or a separate fuze. It's very common for Soviet/Russian aerial fuzes to have an I-xxx code, as well as an index code, and sometimes other designations.
Not sure what the T-5-O (Cyrillic Т-5-О or Т-5-0?) fuze is, though it may suggest a variant of the T-5? However the original T-5 fuze had a larger maximum diameter (≈63 mm and not ≈40 mm) and was much heavier (≈710 g and not ≈265 g), plus its arming system was designed for a high set-back and spin environment.
microplastic
Well-Known Member
Thanks for the pic and the explanation!! If anyone has such an igniter for sale, please let me know, it is needed for a cutaway model.
Regards
Regards