Terrain Accessibility Prediction for a New Multi axle Armoured Wheeled Vehicle

  • V. V. Jagirdar DRDO-Vehicles Research and Development Establishment, Ahmednagar - 414 006
  • M. W. Trikande DRDO-Vehicles Research and Development Establishment, Ahmednagar - 414 006
Keywords: Terrain Accessibility, Mobility performance prediction, Mobility characteristic parameters, Mobility limit parameters, Soft soil trafficability

Abstract

Better terrain accessibility of military vehicle makes it possible to project force at desired points in a theatre of operation. The factors responsible for terrain accessibility are slope, obstacles and soil. Torque requirement for meeting vehicle speed and gradient requirement is understood and can be analytically arrived at. It can be met by appropriate choice of engine and transmission using. There is dearth of information as well as a common metric in quantification of terrain accessibility especially soft soil trafficability. Approach adopted in this study is that of characterisation of vehicle in terms of mobility characteristic and mobility limit parameters and comparing them with vehicle in-service worldwide. Simple empirical relation has been preferred over complex analytical approach for mobility prediction and gradient climbing capability in sand has been predicted and compared with other vehicles. parametric study for tyre sizes vis-a-vis mobility parameters have been obtained and results have been presented for chosen vehicle configuration. Second part of this study is obstacle crossing capability study for standard set of obstacles. Vehicle model has been built in multi-body environment and parameters of significance viz., wheel displacement to verify correctness of model and acceleration at CG for ride comfort and ground reactions for evaluation of dynamic loads on axles have been obtained. Vehicle drivetrain configuration to achieve desired terrain accessibility in terms of soft-soil trafficability and obstacle crossing has been demonstrated.

Author Biographies

V. V. Jagirdar, DRDO-Vehicles Research and Development Establishment, Ahmednagar - 414 006

Mr Vinit V. Jagirdar received his MTech (Design) from MNNIT, Allahabad and BE (Mechanical Engineering) from Nagpur University. He is presently working as Scientist ‘E’ in DRDO-Vehicles Research and Development Establishment, Ahmednagar. His areas of interest are vehicle suspension design and dynamic testing.
In the current study,

M. W. Trikande, DRDO-Vehicles Research and Development Establishment, Ahmednagar - 414 006

Dr M.W. Trikande, has received his PhD in Suspension control for combat vehicle from VIT, Vellore. Presently working as Scientist ‘G’ in DRDO-Vehicles Research and Development Establishment, Ahmednagar. His areas of interest include Combat vehicle vetronics and suspension control.

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Published
2019-03-06
How to Cite
JagirdarV., & TrikandeM. (2019). Terrain Accessibility Prediction for a New Multi axle Armoured Wheeled Vehicle. Defence Science Journal, 69(2), 195-200. https://doi.org/10.14429/dsj.69.12076