REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

THE METHOD FOR THE AUTOMATIC ELIMINATION OF THE EFFECTS OF THE TERRAIN SLOPE ON THE MLRS

Milan B. Milošević

Military Technical Institute, Belgrade, marija.m@beotel.net

Abstract: In this paper the firing elements of MLRS (Multiple Launcher Rocket System) with a sloping terrain using spherical and plane trigonometry are derived. The slope plane is obtained by rotation of the horizontal plane by two rotations around two perpendicular axes. A coordinate transformation matrix muzzle of the launch tube is given. The firing elements are presented as a function of terrain inclination and the elements of fire with the horizontal terrain. The model was built using two inclinometers placed in the direction of the longitudinal and transverse axis of the vehicle. A three dimensional model in AutoCAD of launching tube and rotate part mechanisms of azimuth is made, that was given a graphical comparison of the calculated firing elements on sloping terrain and the firing elements on horizontal plane.

Keywords: rocket launcher, inclinometer, sloping terrain, transformation matrix, spherical trigonometry, the firing elements, corrected firing elements.