Nape Guard Ballistic Study – Performance of Narrow and Overlapping Soft Armour


  1. Fournier, E.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Biokinetics and Associates Ltd, Ottawa ONT (CAN)
The Advanced Modular Multi-threat Protective Headwear System (AMMPHS) development program was initiated to address the evolving head protection needs of Canadian soldiers in today’s battlefield. The nape is one area of the head in which additional protection is sought from ballistic threats. AMMPHS nape guard designs have been proposed that comprise short curtains of ballistic fabrics suspended from the rear edge of a helmet. It is not know how these designs will perform under ballistic impact, particularly as the strike location approaches the free edge of the nape guard panels. A series of ballistic tests were conducted with 17 grain FSPs and 96 grain steel spheres where the shot placement was varied from the centre of the test sample to the edge. The effect of overlapping fabric edges was also evaluated to determine the minimum amount of overlap required to maintain uniform ballistic protection. Generally, the results confirm the ability of a fabric ballistic nape guard concept but raise a concern regarding blunt impact trauma to the neck resulting from backface deformation of non-penetrating ballistic strikes.

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Report Number
DRDC-VALCARTIER-CR-2009-148 — Contractor Report
Date of publication
01 Sep 2009
Number of Pages
Electronic Document(PDF)

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