Abstract: A harvester for processing forage including a cutter, a conveyor and a preparation apparatus for forming a mat of forage, the mat exiting at the discharge end of the preparation apparatus. A separation roller is positioned at the discharge end of the preparation apparatus to separate the mat from the preparation apparatus.

Abstract: A method for determining an elevation angle correction value for a gun barrel which fires a projectile. An elevation angle for the gun barrel for a desired point of impact of a projectile is calculated and the projectile is fired from the gun barrel. A first measurement of the trajectory of the projectile is made at a point within the ascending portion of the trajectory. A second measurement of the trajectory of the projectile is made at a point within the descending portion of the trajectory. The first and second measurements are used to calculate the actual trajectory of the projectile from which the actual point of impact of the projectile is determined. The elevation angle correction value is determined from the deviation between the desired point of impact and the actual point of impact.