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Author Topic: Probojnost topovskih granata  (Read 41116 times)
 
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MOTORISTA
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« Reply #60 on: May 23, 2021, 07:54:20 pm »

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« Reply #61 on: May 26, 2021, 07:07:13 am »

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« Reply #62 on: July 10, 2021, 08:49:31 pm »

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Telescoping projectiles increase their length during flight, and have the potential to penetrate deeper then standard projectiles. This video simulates standard telescoping APFSDS projectiles to compare how they perform to monolithic penetrators as well as proposing a new telescoping design.

The standard telescoping design is similar to ones collated in [2], with the same conclusions being drawn (the telescope does not form a wide enough cavity for the sleeve).

Pros and Cons for different designs (compared to standard monolithic):
Standard Telescope:
+Early Detonation of ERA
+Potentially Increased Resistance to ERA
-More likely to shatter
-Increased complexity

Trailing Telescope:
+Increased Penetration
+Early Detonation of ERA
+Potentially Increased Resistance to ERA
-More likely to shatter
-Increased Complexity

Slender (L/D=30)
+Increased Penetration
+Increased Velocity
-More likely to shatter
-More affected by ERA

References:
[1] Odermatt Formula: http://www.longrods.ch/perfcalc.php
[2] Paper containing similar telescoping results: https://www.researchgate.net/publicat...
[3] Material Properties: https://core.ac.uk/download/pdf/28829...


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MOTORISTA
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« Reply #63 on: July 10, 2021, 08:50:18 pm »

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Segmented projectiles are made up multiple penetrating slugs, divided by spacers of various materials. Upon impact, the spacers reduce the amount of stress transmitted to subusequent segments, causing them to decelerate less. The segments can then impact eachother, giving a 'boost' to the foremost segment. It is said that this gives segmented projectiles increased penetration over monolithic designs.

For this video, the dimensions of the components are kept constant, with only the spacer material being varied. It is likely that the number, length, and spacing of the segments would have an affect on the penetration, so other segmented designs may be investigated in a future video.

Pros and Cons of Segmented Penetrators:
+Increased Velocity
+Less Likely to Fracture/Shatter
+Shorter Tungsten Lengths (easier and cheaper to produce)
+Potentially Increased Resistance to ERA (less shear stress is transmitted as the components are segmented)
-Increased Complexity
-Slightly Reduced Penetration (for the designs shown)

References:
[1] Odermatt Formula: http://www.longrods.ch/perfcalc.php
[2] Paper containing similar segmented designs: https://www.researchgate.net/publicat...
[3] Material Properties: https://core.ac.uk/download/pdf/28829...

The hardness used in the Odermatt formula was 300 BHN.


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micha
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« Reply #64 on: July 10, 2021, 09:56:42 pm »




   Možda bi dobili veće poboljšanje prodora da su između Tungstenovih segmenata stavili keramičke separatore?


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lovac
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« Reply #65 on: July 11, 2021, 08:34:35 pm »

A šta misliš, da nisu i to probali?
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« Reply #66 on: July 11, 2021, 08:38:33 pm »

U ovim simulacijama nisu.
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« Reply #67 on: August 17, 2021, 12:16:58 pm »

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« Reply #68 on: August 25, 2021, 08:04:07 am »

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« Reply #69 on: August 27, 2021, 04:40:53 pm »

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