Effect of windshield configuration and pilot position on motorcycle performances. Issue 218 (November 2021)

• Record Type: Journal Article
• Authors: Capone, Alessandro; Romano, Giovanni Paolo
• Is Part Of: Journal of wind engineering and industrial aerodynamics. Issue 218(2021)
• Publication Date: 2021-11
• Subjects: Motorcycle -- Particle Image Velocimetry -- Wind tunnel -- Windshield; Wind-pressure -- Periodicals; Buildings -- Aerodynamics -- Periodicals; Pression du vent -- Périodiques; Constructions -- Aérodynamique -- Périodiques; Buildings -- Aerodynamics; Wind-pressure; Periodicals
• DOI: 10.1016/j.jweia.2021.104753
• Languages: English
• ISSNs: 0167-6105

Abstract

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. Highlights: Aerodynamics of a racing motorcycle is analyzed by force measurements and PIV. A range of windshield lengths and rider stances is investigated. Full-size windshield features uniform wake structure and reduced velocity fluctuations.