ORSIS - a dynamic real-time simulation of the off road driving

ORSIS (Off Road Systems Interactive Simulation) is a professional simulation tool that was developed in more than ten years of research work at the Institute for Automotive Engineering (IKK) of the University of the Federal Armed Forces Hamburg under the management of Prof. Dr.-Ing. I.C. Schmid on behalf of the federal office for military technology and procurement (BWB). As a partner of the federal office for military technology and procurement AESCO took over the selling, the support and the further development of the simulation program ORSIS. With this co-operation for the first time it is possible for companies and facilities outside the German Federal Armed Forces to profit from this expert knowledge and to acquire a user license of ORSIS.

ORSIS allows the real time simulation of the terrain drive of multiaxled wheeled vehicles in a realistic area. The program is world-wide unique regarding the depth of the physical modelling describing the interactions between the elastic tire and the soft soil and in the complexity of the resulting effects. With its manyfolded possibilities ORSIS is a valuable tool for the development and the optimization of cross-country wheeled vehicles. Due to the realtime capability it is also possible to include test stands (Hardware in the Loop) as well as complex driving simulators with motion systems.

Main features of ORSIS:

  • realtime capability
  • all wheel driven vehicles up to 4 axles
  • complex model for the interaction between elastic tire and soft soil, including multipass
  • complex driveline (engine, converter, gearboxes, distribution gears, differentials, differential locks, etc.)
  • simulation of electrical drivelines (central drive and wheel drive)
  • detailed 3D terrainmodel
  • stochastic terrain properties: roughness (PSD) as well as statistical soil properties
  • physical weather model using measured or predicted weather data
  • interactive tire inflation pressure control
  • interactive distribution of the drive torque
  • interactive steering configuration
  • interactive setting of additional forces by time or distance (vertical and horizontal)
  • automatic driver (interactive changeable course)
  • high-quality visualization based on OpenGL
  • comfortable analyses of simulation results

NEW in Version 2.0:

  • dynamic multibody vehicle model
  • lateral dynamics on soft soil
  • individual modelling of different drivelines (I and H configuration)

Under development:

  • Support for Delft Magic Formula tire data for rigid roads
  • Improved OpenGL visualization with support of wavefront *.obj files
  • Multichannel visualization under LinuX

Supported Hardware:

  • Personal Computer with LinuX (OpenGL acceleration recommended, e.g. GeForce)
  • SGI-Workstation with IRIX
  • other Unix-Systems on demand (e.g. HP-UX)


ORSIS is registered trademark of the Federal Republic of Germany