Aerodynamic device for motorcycle

A system of aerodynamic appendices (wings) is suitably designed and positioned on the motor-bike in order to increase the downforce, improving the grip and the maximum speed in the turn. The effect is based on a significant aerodynamic interaction between the wings and the body of the rider.

Title of the patent Aerodynamic device for motorcyclist use
Thematic area Mechanical, civil and environmental engineering
Ownership Alma Mater Studiorum - Università di Bologna
Inventors Alessandro Talamelli, Alessandro Rossetti, Henrik Alfredsson, Vojtech Sedlak
Protection Italy
Licensing status Available for licensing agreement
Keywords Motorbikes, performance improving, downforce, wings, aerodynamic interference effects
Filed on Oct 02, 2013

Race cars are often equipped with horizontal wings that guarantee a better grip on the ground and stability, improving the performances in terms of breaking distance and maximum velocity in a turn. Similar devices cannot be installed on motorbikes due to the different way of approaching the turn. In this case any installed on the motorbike would generate not only a vertical down-force but also a centrifugal one, which would null completely the benefits gain with the former. Keeping the wing on a horizontal position would require the use of complicate gyroscopes sensors and movement systems.

The invention describes a system of aerodynamic appendices made by wings (or more generally appendices) which are specifically designed and positioned on the bike. This  produce an aerodynamic force which increase the down-force of the bike improving the grip and increasing the maximum speed in the turn. The centrifugal force produced by the wing positioned in the inner part of the bike is significantly reduced by means of an aerodynamic interference effect with the rider, which is positioned off the symmetry plane in order to keep the bike in the lean position.

The invention can be applied to race and/or high-performance motor-bikes. The advantages related to the invention concern the simplicity of the devices and the possibility to adapt the geometry to different competition rules or to different bike design. Another big advantage is related to the absence of any moving part and any specific sensor for lean angle detection.