Aerodynamics; Aeroacoustics - SCHUBERTH C3 PRO Manual Del Usuario

C. THE HELMET

6. AERODYNAMICS

All SCHUBERTH motorcycle and racing helmets are developed
and optimised in SCHUBERTH's own wind tunnel under precisely
defined scientific conditions. The C3 Pro is specifically designed
for a touring or sport-touring riding posture and remains stable
in the air current. Even when traveling at high speeds, the C3 Pro
generates practically no upward lift. Enhanced characteristics of
the C3 Pro are improved air resistance and optimised directional
stability. The buffeting* on unfaired motorcycles is also
significantly minimised.
* Shaking of the helmet as the air flows around it.
Note:
Please note that the strong eddy currents that can occur
as a result of the fairing on faired motorcycles may have a
significant effect on the aerodynamic characteristics of a
helmet.

7. AEROACOUSTICS

Various features developed in SCHUBERTH's wind tunnel make
the helmet notably quiet as far as aeroacoustics are concerned,
while providing optimised hearing capability when riding. This
enhances concentration, especially at high speeds.
Note:
Aeroacoustic values may vary according to the type of
motorcycle, fairing design, seat position and physical size
of the rider.
Caution:
As a result of the aeroacoustic optimisation of the helmet
(and the lower wind noise inside the helmet that comes with
it), your actual speed can easily be underestimated. Please do
not rely on your sense of hearing to estimate your road speed
- always check it using your speedometer.
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Note:
With faired motorcycles, strong eddy currents occur at the
edges of the wind shadow. These may significantly reduce
the aeroacoustic performance of the helmet. The motorcycle
fairing should be adjusted so that the turbulence created
does not reach the bottom surface of the helmet.
aeroacousitcally non-critical area
Turbulators
The patented turbulators on the top of the face
shield also optimise the aeroacoustic properties
when riding and prevent acoustic disturbances
in the form of whistling sounds that can be
created by smooth and straight edges.
aeroacoustically critical area
aeroacousitcally non-critical area
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