2018-28-0078 Published 09 Jul 20 18 © 2018 SAE International. All Rights Reserved.Modelling and Simulation of Main Battle Tank to Stabilize the Weapon Control System Jitesh Shukla Pranveer Singh Institute of Technology Citation: Shukla, J., “Modelling and Simulation of Main Battle Tank to Stabilize the Weapon Control System,” SAE Technical Paper 2018-28-0078, 2018, doi:10.4271/2018-28-0078. Abstract This study is focused on development of an integrated elevation and azimuth dynamics of an electrically driven weapon platform. Initially, the elevation dynamics of the weapon system, driven by an electric drive consisting of 5 degrees of freedom, is developed. The azimuth drive of the weapon dynamics, governed by turret rotation, is subsequently incorporated in the same model. The weapon dynamics math model has been integrated with a 17 degree of freedom ride math model of a 14-stationed tracked vehicle. Ride mathematical model will be subjected to road excitation such as Aberdeen Proven Ground (APG) input. Predetermined torque input to aim the main gun at desired location, as well as outputs obtained from the ride math model, such as bounce, pitch and roll of the sprung mass (hull) is given to elevation and azimuth drive. Modelling and development is done in SIMULINK environment for fixed time step, simulating weapon dynamics, coupled with the drives, using a lumped parameter beam for modelling the gun. Passive responses given by the main gun barrel at breech and muzzle CG are measured. The responses obtained from the SIMULINK math model, are validated by simulating the stand-alone model developed in ADAMS for elevation and azimuth dynamics. The integrated dynamics math model would provide a very useful platform for implementing the desired control system to stabilize the weapon platform in an operational dynamic environment and it improve upon the first-round hit probability. Introduction A battle tank should be capable to run on all types of terrain and fire at target in dynamic condition. First round hit probability is the main deciding criteria have character - istics of any main battle tank (MBT). MBT is an assembly of suspension system, azimuth drive, elevation drive, firing and ballistic systems. These are the deciding parameters for stability of main gun. Suspension system of an assembly is responsible for perfect holding and ride quality against irregular terrain surface, azimuth drive is responsible for rotation of turret in horizontal plane, elevation drive is to move the main gun vertically about the trunnion with the help of geared drive electric motor. The main gun is rotated about the yaw-axis with the help of turret drive which rotates by torque, produced by electric motor to the turret ring. Torque given by gunner in specific rotation of the turret and main barrel is responsible for swaying motion of barrel. The recoil force is accommodated by main gun barrel system, muzzle reference system and ammunition loading system for firing and ballistic system [ 1]. This study is focused on development of integration with elevation and azimuth dynamics of an electrically driven weapon platform the weapon dynamics model is coupled with the 17 degrees of freedom ride model of full tracked vehicle. Ride mathematical model will be subjected to road excitation such as Aberdeen Proven Ground (APG) input. Predetermined torque input to aim the main gun at desired location, as well as outputs obtained from the ride math model, such as bounce, pitch and roll of the sprung mass (hull) is given to elevation and azimuth drive [2]. Mathematical Modelling The MBT is very massive structure having weight of 60-80 T, gun barrel of 6 m long. It is difficult to develop the mathemat - ical model of this kind of structure on which aforesaid variable parameters are present [ 2]. There are some assumptions to determine the mathematical model of MBT. Initially, models of elevation, azimuth drive of weapon platform and 14 stationed tracke