Aerodynamics is field science of that studies about an object moving in air or behaviour of air inside a system. It is applied in various fields such as aeronautics, automotive, architecture etc.
Generally Aerodynamic design of vehicles is used to reduce drag coefficient which is a major factor that affects fuel efficiency. Since low cost bikes are designed and developed for a budget market. Aerodynamics is used to improve fuel efficiency which reduces fuel consumption, which in turn improves the operating efficiency of the vehicle.
In case of high cost bikes, performance of the vehicle plays a major role in design. Here aerodynamics is used to improve overall vehicle performance. On high speeds reducing the drag increases the vehicle movement in air. Most of the aerodynamically designed vehicles adopt tear drop model, which allows the air to pass through smooth surface of the design.
In this type of design drag is considerably reduced which improves faster movement of the vehicle.
Consider an example keep a plate like object in moving air , front side of the plate experiences higher pressure and back side has lower pressure and the plate is pushed backward as the speed of the air increases. This is the air resistance or drag experienced by a solid object in moving air. if the front shape of the object is streamlined pressure is reduced and the object moves forward with ease.
Vehicles such as cars and bikes are designed in such a way to reduce drag which improves fuel efficiency, performance and design of the vehicle.
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