The Complete U.S. Army Survival Guide to Shelter Skills, Tactics, and Techniques by Jay McCullough

Author:Jay McCullough
Language: eng
Format: epub
Publisher: Skyhorse Publishing
Published: 2016-01-25T16:00:00+00:00

Figure 1-7: Position with overhead cover protection against fragments from a 120-mm mortar

Delay Fuze Burst

Delay fuze shells are designed to detonate after penetration. Protection provided by overhead cover is dependent on the amount of cover remaining between the structure and the shell at the time of detonation. To defeat penetration of the shell, and thus cause it to detonate with a sufficient cover between it and the structure, materials are added on top of the overhead cover.

If this type of cover is used along with contact. burst protection, the additional materials (such as rock or concrete) are added in with the soil unit weight when designing the contact burst cover structure.

TRIGGERING SCREENS

Triggering screens are separately built or added on to existing structures used to activate the fuze of an incoming shell at a “standoff’ distance from the structure. The screen initiates detonation at a distance where only fragments reach the structure. A variety of materials are usually used to detonate both super-quick fuzed shells and delay fuze shells up to and including 130 mm. Super-quick shell detonation requires only enough material to activate the fuze. Delay shells require more material to both limit penetration and activate the fuze. Typical standoff framing is shown below.

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