MRSI

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MRSI ( English Multiple Round Simultaneous Impact ) is a term used in weapons technology. It refers to the ability of a single gun, several bullets to fire, the same in the target hit . Almost all modern artillery pieces are able to fire according to the MRSI method.

background

Due to the ballistic trajectory of the projectiles , the projectiles of the - normally loosened - guns in a firing position strike at different times. This gives the enemy time after the first impact of a shell to react to the attack, seek cover or leave the affected area. As a result, the effectiveness of the fire especially against troop or vehicle gatherings decreases. Therefore the artillery tries to bring a large number of projectiles to the target at the same time.

Representation of the different trajectories in the MRSI: For each muzzle velocity there is a steeper (> 45 °, solid line) and a flatter (<45 °, dashed line) trajectory. The grenades then have different flight times on these different trajectories.

Process and technology

The MRSI method is an extension of the Time On Target (TOT) procedure. While the TOT method involves the simultaneous impact of the projectiles by coordinating several guns, the MRSI enables the same effect with a single gun.

This is achieved in that the first floor is fired with a large tube elevation and a large propellant charge and the subsequent one with a decreasing tube elevation and adapted propellant charges. This means that the grenades' flight times differ due to the different muzzle velocities . However, by reducing the propellant charges and increasing the barrel height, the maximum range for an MRSI attack is reduced compared to the maximum firing range of the gun. A prerequisite for the MRSI procedure is a fast fire control calculation, a highly dynamic alignment of the gun and a high cadence of the weapon system, for example through automated bullet feed.

The Panzerhaubitze 2000 , for example, is able to fire six projectiles at a distance of 17 km which, after their flight time, explode within 1.2 seconds at the target.

Furthermore, there is the possibility of achieving an even higher bullet concentration from a combination of Time On Target and MRSI.

See also

Individual evidence

  1. ↑ Christopher Foss: Jane's Armor and Artillery 2009-2010. P. 746.