1988-10-01

Stability of a One Box Type Vehicle in a Cross-Wind-An Analysis of Transient Aerodynamic Forces and Moments 881878

One-box type vehicles are especially liable to a loss of stability when entering a region of cross-wind. The reasons for this instability were investigated using scale models and by means of a mathematical simulation.
Results indicated that yawing moment attains a peak at a precise position of the vehicle relative to the cross-wind. Visualization of the air flow and measurement of the pressure distributions established the cause of the phenomenon.
Furthermore a study was conducted into the effects of body shape on stability and the efficacy of various modifications was assessed.

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