# Angle group

The **angle group** is a term used in artillery and ballistics . A distinction is made between **upper** and **lower angle groups** . The angle group has a major impact on the impact angle of the projectile and the projectile flight time.

In order to shoot a specific target , the gun barrel is set up in a precalculated lateral direction - the partial ring - and at a precalculated angle to the horizontal - the elevation. At a given muzzle velocity, this is responsible for the ballistics of the projectile and the firing range.

The maximum possible firing range results from an angle of increase of 45 ° to the horizontal (if the air resistance is not taken into account). If a target is fired at whose range is below the maximum firing range, there are two possible solutions to the fire control equation . The solution with an increase above 45 ° (and below 90 °) is referred to as the result in the **upper angle group** , the solution with an increase between 0 ° and 45 ° as the result in the **lower angle** group.

## See also

## literature

- John Batchelor & Ian Hogg "The History of Artillery" Heyne Munich 1977 ISBN 3-453-52068-8 .