Effectiveness of spaced armour

1966 report conducted with live trials

Written by: yours truly / No AI was used in the process of this, including rephrasing and images

Date of writing: 11/04/2026 12:55

A translated report from OBK-710 detailing a series of tests conducted regarding the effectiveness of spaced armour arrays.

ME - Mass efficiency, with 1 being the effectiveness of the mass if it was a homogenous plate, eg: 60mm RHA has an ME of 1

FINDINGS

Context: Total thickness is 60mm for all plates, air gap was found to reduce effectiveness, so air gap was kept consistently within 5mm

Test 1:

General observations:

Unangled test: It was observed that when when the target plates were unangled, the split plates (tested, 5mm, 10mm, 15mm) performed worse than the homogenous target, with efficiency dropping with the thickness of the plates

Angled test: It was observed that when the target plates were angled at an angle of 30 degrees, split plates (testing 5mm, 10mm, 15mm) were more efficient for mass than the homogenous plate.

It was observed that stacking plates directly onto each other did not affect performance of the armour

Recorded results:

Unangled test: No results recorded

Angled test:

Test 2:

Context: To simulate a real array, a 10mm front plate angled at 15 degrees horizontally, and a backplate measuring 10mm unangled were used

Recorded results:

Test 3:

Context: To better remove possible inconsistencies with the trial, the horizontally angled plate was instead changed to be angled from the vertical

Recorded results:

CONCLUSION

5mm plates are more effective for their mass than a homogenous plate in the contexts of tank protection, recommended for committee is further research into the effectives of spaced plates the and effect the front and back plate possess.

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