An Investigation of High-Speed Automobile Steering Response |
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| Authors: | C W Ronosulistyo P F Sweatman P N Joubert |
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| Institution: |
a Graduate Research Assistant, Department of Mechanical Engineering, University of Melbourne, Parkville, Victoria, Australia
b Senior Research Fellow, Department of Mechanical Engineering, University of Melbourne,
c Professor of Mechanical Engineering, University of Melbourne, |
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| Abstract: | The significance of the effects of steering compliance and aerodynamic life on high speed automobile's steering response was investigated on two vehicles, a Ford Falcon XW (1969) station-wagon and a GM-Holden Kingswood HQ (1974) sedan. An aerofoil was mounted above the front bumper bar of the Ford Falcon to enable the simulation of vehicles with very degraded aerodynamic characteristics. Mathematical analysis showed the importance of the inclusion of steering compliance effects in determining stability factor, and hence the vehicle's high speed yaw rate sensitivity. Both experiments and theory showed that the actual high speed yaw rate response is not significantly less than that predicted from a low speed skid pad test, however, slight errors were found which are likely to be due to steering system nonlinearity and the effects of aerodynamic lift. |
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