18B Mortar Employment & 81mm Practice Test

The primary purpose of the fuze on a mortar round is to detonate the round upon impact or at a preset time. This functionality is critical for the effectiveness of the mortar, as it ensures that the explosive charge is activated at the right moment to achieve maximum impact on the target. The fuze is designed with specific mechanisms that allow it to sense when the round has either struck the ground or reached a predetermined altitude, depending on the type of fuze used.

In combat scenarios, the choice between impact fuzes and timed fuzes can lead to varying tactical outcomes. For instance, a timed fuze might be used to create airbursts above a target, dispersing shrapnel over a wider area, while an impact fuze is designed to create a concentrated effect directly on impact. This versatility in detonation is key to the mortar's role on the battlefield as it enables effective engagement of different types of targets.

The other options provided, while related to a mortar’s operation, are not the primary purpose of the fuze. Stabilization is typically achieved through the projectile's design and fins, accuracy is influenced by a combination of factors including weapon alignment and environmental conditions, and while safety mechanisms are crucial, they serve to prevent accidental detonation