Abstract
The effect of three windshield shapes on the aerodynamic performance of a racing-type motorcycle is investigated experimentally via global wind-tunnel force balance measurement and detailed local wake analysis by Particle Image Velocimetry. Results are compared to two driver’s stances as well as to a baseline case. Results are dependent mainly on the windshield length as coupled to the driver positioning. Full-size windshield is characterized by a quite uniform wake structure and reduced level of velocity fluctuations and turbulence and is associated to improved stability, in spite of a relative increase of drag. When the additional safety and driver’s protection from weather conditions are considered, the use of a full-size windshield appears an effective solution for commercial motorcycles.
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