Hello my name is Timu and I am going to tell
you what aerodynamics is with vehicles.
But ﬁrst here are some key words below just to see if you
know them or not. If you don’t know any of these words I
will explain what they mean. So once you know them keep
them in mind because I will quiz you at the end.
Lift Thrust vAir ﬂow
Gravity Drag vSpoiler
Here is a diagram of what the key words mean
Here we have two types of vehicles. A truck
and a car. These will be my assistants.
Do you know witch one is more aerodynamic
The front of the truck is ﬂat so the air just hits the
front of the truck so the wind ﬁghts against the
The airﬂow goes over the car when it is driving
because it is shaped to go fast. If you look at the front
of the car it isn’t ﬂat, it’s curved so it is more
This here is a dragster. These type of vehicles are made
for short but fast races and they are very aerodynamic.
Spoilers are the
piece on the back
of a dragster
Click here to
see what happens
when there is no
They make the airﬂow
go down to stop the
dragster to lift
Dragsters Thrust very
fast so they also have a
parachute to stop it from
speeding on past the ﬁnish
line. That is called the
A dragster without a spoiler would slowly raise by
the second from its speed then tip backwards.
Who do you think would win?
As you this dragster compered top
Look atcan see the air goes overto
theof the dragster so the air doesn’t
truck. It has a spoiler, parachute
affect the speed.
and it is very aerodynamic.
The truck ﬁghts the wind so the the
Look at this truck compered to truck
dragster. It has no spoiler and it the
would never win a race against is