Study of forces generated by motion of air or moving body.
CLASSIFICATION OF AERODYNAMICS
• External and Internal
FIELD OF APPLICATION
• Aerospace Engineering
• Design of automobile
• Civil Engineering
• Design of bridges etc.
• In the early 1920s engineers began to consider
automobile shape in reducing aerodynamic drag at
• By the 1950s German and British automotive engineers
systematically analyze the effects of automotive drag
for higher performance vehicles.
• By the late 1960s scientists showed awareness in the
significant increase in sound levels emitted by
automobiles at high speed.
• Soon highway engineers began to design roadways to
consider the speed effects of aerodynamic drag
produced sound levels.
FEATURES OF AERODYNAMICS
• Integrate the wheel arcs and lights into the shape
to reduce drag.
• Consist of a flat and smooth floor to support the
• Produce desirable downwards aerodynamic
• Have a seal between the low pressure region
around wheels and high pressure around the gear
• Have closed engine bay floor.
COMPARISION WITH AIRCRAFT
• Road vehicle shape is much less streamlined
compare to an aircraft.
• The vehicle operates very close to ground rather
than in free air.
• The operating speeds are lower.
• A ground vehicle has fewer degrees of freedom
than an aircraft.
• Ground vehicles is less affected by aerodynamic
• Ground vehicle have very specific design
METHODS OF STUDYING
• Studied using both computer modeling and
wind tunnel testing.
• Example of such a rolling road wind tunnel is
wind shear’s Full scale, Rolling Road,
Automotive wind tunnel in Concord, North
• Common measure in automotive design.
• It impacts the way the automobile passes
through the surrounding air.
• Reducing the drag coefficient in an automobile
improves the performance of the vehicle.
It describes the downward pressure created by
the aerodynamic characteristic of a car:
• It allows to travel faster through a corner.
• Very important to produce a good downward
aerodynamic force as effects the car’s speeds
AERODYNAMIC DESIGN TIPS
• Cover open wheels.
• Minimize frontal areas.
• Use Spoilers.
• Use wings.
• Use fronts air dams.
• Use aerodynamics to assist car operations.
IMPROVEMENT OF VEHICLE’S
• Lower the car.
• Clean up the under side of the car.
• Fair the wheel wells.
• Remove the side view mirrors and instead use
a remote camera system.
• A small “Tail cone” Can be affixed near the
bumper to help transition the air from under
• Aerodynamics elements in the cars are tested in
• The manhole covers on the streets have to be
welded down because the down force of the cars
can lift manhole covers.
• The front wing is the key to the aerodynamic
concept of the F1 car.
• Fuel economy is the focus of the Aerodynamics.
OBJECTIVE OF AERODYNAMICS IN
• Influencing the way a car cuts through air.
• Reducing the drag.
• Reducing wind noise.
• Prevent Undesired lift forces at high speeds.
• Produces desirable downwards aerodynamics
forces to improve traction.
• Prakash Jha
• Sayan Chatterjee
• Dhiman Das
• Sounak Kumar Maity
• Arnab Sil
• Subham Roy
• Supriyo Chatterjee