Roborace

Aerodynamism :

Each prototype of Robocars weighs about 975 kilograms, measures 4.8 meters long by 2 meters wide and looks like something out of a science fiction movie.

For the general public, the interest of their car being “aerodynamic” is that by reducing air friction, the car consumes less fuel. The interest of aerodynamics for Roborace is different, aerodynamics allows it to go faster and above all to stay stuck to the ground. The top speed measured for the car was 185 km/h.

The car will have a flat and smooth floor to support the Venturi effect and produce desirable downwards aerodynamic forces. The Venturi effect is that the static pressure in the first measuring tube is higher than at the second, and the fluid speedat in the first is lower than the second.

Air is used for cooling components, like the A.I cooling intake and the battery cooling outlet.

Motors :

The Robocars have four 300-kilowatt motors and a 540 kW battery encased within a carbon-fiber body.

When DC supply is given to armature winding current will flow through armature conductor which is placed in the magnetic field of main field winding.

If reminds the principle of the motor, it says that when a current carrying conductor is placed in a magnetic field it will experience a force and start moving. As the current caring rotor conductor is in the influence of stator magnetic field therefore rotor conductor will experience a mechanical force and start rotating.

Fleming's left-hand rule for electric motors is that a left hand can be held, as shown in the illustration, so as to represent three mutually orthogonal axes on the thumb, fore finger and middle finger. Each finger is then assigned to a quantity (mechanical force, magnetic field and electric current).

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