Greece has never
hosted a grand prix, nor has it produced any F1 drivers, but
aerodynamics seems to be something of a forte for Greeks,
including Scuderia Ferrari Marlboro's Chief Designer,
Nikolas Tombazis. Passionate about motor racing, a seven
year old Nik watched his first grand prix on television.
"From then on, I was hooked!" he says. "In 1978, when I was
about ten years old, I was fascinated by the aerodynamic
aspect as this was the era of the ground-effect cars. I used
to read all the racing magazines and as I was quite good at
Physics and Maths at school, I decided it would be worth
going for an engineering degree in the hope of getting a job
in motor racing. So I went to England to study and then
found my first job with Benetton in 1993, moving to Ferrari
in 1997. Then I took a short "sabbatical" from Ferrari for a
couple of years but I am back now."
Making a rare trip to a grand prix in Melbourne, Tombazis
had the pleasure of seeing the car whose design he oversaw
take its maiden win in great style courtesy of Kimi
Raikkonen. We got him to open up about the F2007 design
philosophy and how it was specifically adapted to this
year's new sporting and technical regulations. "You always
have to start with the previous year's car as a basis, as
every car contains the accumulation of many years of details
that we have learnt as we go along and you cannot ignore
that knowledge," began Tombazis. "So, in many ways, this
F2007 is an evolution and in other areas we have taken big
steps forward. Aerodynamics is still one of the primary
performance factors of the car so this is the area that
guides the whole project. The most upstream process is
therefore the aerodynamics which usually starts around over
a year prior to the first race of the season."
Apart from the
aerodynamic criteria, tyres are another crucial area that
stamp their mark on the basic concept of the car and for
this year, with Bridgestone returning to a supply monopoly
situation, that meant a step into the unknown. "This year
the tyres were not known to us until very late in the
process, as Bridgestone had a new specification of tyre to
supply the entire field and did not want to give any team an
advantage by letting them know the specification any
earlier. We had to leave a bit more margin in some areas of
the F2007's adjustability in order to be able to adapt to
that." With just one tyre company and more restrictive rules
regarding engine performance, one could assume that all cars
should produce very similar levels of performance, but
Tombazis does not feel the situation is quite that
straightforward. "Tyres are a constant this year, but how
people manage their tyres is an important factor and clearly
aerodynamics does also have an effect on the tyres. On the
engine side, the level is frozen, but that does not mean
everyone has the same power, although aerodynamics is still
the biggest differentiator between the cars. In general, I
think every engineer would like to have much less
restrictions than we have at the moment, in fact no
restrictions at all. But if this was the case, Formula 1
would be totally unmanageable with cars that were much too
fast and dangerous. The rules are much more restrictive than
back in the 70s, but we can do much more within them, as our
understanding is so much greater."
While technologies have evolved considerably since the 70s,
the very basic technique of playing with the weight
distribution of the car is as important as ever. "As all the
cars are built under the weight limit, we use ballast to
distribute that weight to the optimum level," explains
Tombazis. "Then we try and find the best compromise between
front and rear tyre degradation, braking stability and
traction through corners, so these also influence optimum
weight distribution." This factor has influenced an aspect
of the F2007 design that caused considerable interest when
the car was first revealed, namely its length.
|
|
This weekend's second round of the championship in
Malaysia traditionally provides the sternest test of
a car's ability to keep its major components cool,
while still maintaining its aerodynamic integrity. |
|
|
|
Greece has never hosted a grand prix, nor has it
produced any F1 drivers, but aerodynamics seems to
be something of a forte for Greeks, including
Scuderia Ferrari Marlboro's Chief Designer, Nikolas
Tombazis. |
|
"It's true we have lengthened the car and aerodynamic
considerations have been taken into account in doing this
and it has been done in full combination with studying
weight distribution and other parameters such as moments of
inertia and the car's centre of gravity," continues
Tombazis. "You have to put all these factors in a pot, find
which are the most and least dominant and thus find the best
compromise. You can lengthen a car in three ways, either by
moving the front wheels forward or the rear wheels backwards
or a bit of both. If you move the wheels backwards, you move
weight distribution forwards, and if you move the front
wheels forward, you move the weight distribution backwards.
You can tune it to your heart's content!"
This weekend's second round of the championship in Malaysia
traditionally provides the sternest test of a car's ability
to keep its major components cool, while still maintaining
its aerodynamic integrity. However, Tombazis is confident
that the Scuderia has got its sums right with the F2007:
"Some parameters are very predictable so the engine side of
cooling and how much you need to open up your bodywork
depending on your radiator size is very predictable and
fairly feasible to calculate with a good degree of
precision. Unless you have underestimated the heat generated
by the engine, in theory you should not have to open up the
bodywork in an excessive way. You will see we won't have any
excessive openings in Malaysia."
Apart from providing the engineers with a chance to verify
their cooling calculations and prepare the car for the
Malaysian GP, last week's test at the Sepang circuit was
also the first session to be run under the new agreement
that means a car can only use one car for tests held during
the season, which are also restricted to just three days. In
fact, this session was extended by one day as the new
regulations allow for an extension in the event of rain,
which did affect the third day of the test. The restrictions
have altered the Scuderia's approach to on-track testing.
"When we take a new development of a car to a race, we want
to be very certain a new component is performing as expected
and is a real step forward, therefore we need to test it
first," says Tombazis. "So the new testing agreements have
focussed our approach within the limited number of
kilometres. We try to be as efficient in testing as at the
races. In the past we would not think twice to have a few
more test days to test even the minutest detail and we
tended not to think about the efficiency of our testing. Now
we need to have as much of it worked out before the start of
the test and now it is best to sort out car and systems
reliability on the test bed."
Nik Tombazis will only attend a handful of races this season
as he is kept busy back in Maranello, but this is of no
consequence to him. "The part of my job that I enjoy most is
the design of the car and for me it would be impractical to
go to all the races. Work plus family keep me quite busy. I
enjoy coming to a few and in an ideal world, I would like to
have a couple of clones of me, so that one could be at the
races, another back in the factory and another on holiday in
the Bahamas!"
|
|
|