A Study on Slot Design of Motorcycle Windshield to Improve Aerodynamics Features

  

Muhammad Izzat Nor Ma’arof1*, Tang Peng Rhu1, Rizal Effendy Mohd Nasir2, Hazran Husain2, Girma Tadesse Chala3

1Faculty of  Engineering and Quantity Surveying (FEQS), INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia

2 Faculty of Mechanical Engineering, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor Darul Ehsan, Malaysia

3International College of Engineering and Management, P.O. Box 2511, C.P.O Seeb 111, Muscat, Oman. 

 

Correspondence author : muhammadIzzat.maarof@newinti.edu.my


AbstractIn motorcycle competitions, aerodynamics plays a fundamental role. In order to improve the performance of racing motorbikes, various windshield designs have been studied experimentally. The objective of this study was to minimize the magnitude of skin-friction on a Ducati 1198SP track-motorcycle’s windshield via the integration of slots. An alpha prototype in the motorcycle windshield was designed for the Ducati 1198SP track-motorcycle, and validation was performed on the performance of the newly designed slot variation in the motorcycle windshield in term of aerodynamic features. The newly concept included a double layered windshield construction with the integration of slots, which was tested in a wind tunnel to compare its aerodynamics properties with a stock windshield design of the Ducati 1198SP track-motorcycle. It was proven via the experiment that the Concept I has successfully improved the aerodynamic performance when the tilted angle of the slotted design was at 3.9472°. The particular windshield had the lowest coefficient of drag, lift and the drag and lift force when it travels at 20 m/s. For future studies, more variations of the slot and double layer designs could be further tested

KeywordsMotorcycle, windshield, aerodynamics, skin-friction, performance

Vol.2019:016