Audi 2010 Annual Report Download - page 115

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Speedy descent
Simulating the approach on the ski jump.
Wind resistance is a determining factor for
the take-off speed and length of the jump.
Fan
Collector
Roller stand
Measurement section
Nozzle
The wind
circuit
All three Audi wind tun-All three Audi wind tun-
nels are confi gured as nels are confi gured as
rings. A fan measuring up rings. A fan measuring up
to 5 meters in diameter to 5 meters in diameter
generates airfl ow. Corner generates airfl ow. Corner
baffl es ensure that this baffl es ensure that this
airfl ow reaches the nozzle airfl ow reaches the nozzle
evenly and without turbu-evenly and without turbu-
lence. The nozzle further lence. The nozzle further
accelerates the airfl ow. accelerates the airfl ow.
The air should be uniform The air should be uniform
when it arrives at the when it arrives at the
measurement section. measurement section.
The cars to be tested are The cars to be tested are
placed on roller stands to placed on roller stands to
simulate actual driving simulate actual driving
situations. A collector situations. A collector
gathers up the air again gathers up the air again
and returns it to the fan.and returns it to the fan.
Corner baffl es