Abstract
Hybridization offers various benefits for tactical and combat military vehicles. The development of optimal hybrid propulsion architecture plays a very important role in harnessing the benefits of the Hybridization. To achieve that, it is imperative to have a dynamic model of the vehicle with hybrid drive train that can predict the vehicle response to a satisfactory level, with flexibility to configure different architecture. In this paper, a mathematical model of a 14 ton tracked, skid steered military vehicle with series hybrid drive train is developed using Matlabsimulink toolbox to estimate vehicle performance in terms of mobility and steerability over different driving conditions. At first, the sizing of propulsion motor, steering motor and the selection of transmission configuration is carried out on the basis of vehicle performance requirements. Subsequently, a mathematical model with three degrees of freedom, considering terrain parameters, is developed. The model is simulated over soft and hard terrain to predict mobility and steerability. The obtained results are studied and important observations are discussed.