Aerodynamics; Aeroacoustics - Schubert SR1 Manual De Instrucciones

D. the helmet

7. AERODYNAMICS

All SCHUBERTH motorcycle helmets are tested in SCHUBERTH's
own wind tunnel, to optimize stability, reduce air resistance and
buffeting and to afford directional stability.

8. AEROACOUSTICS

We have paid particular attention to improving the acoustic
properties of the SR1 with no detriment to comfort. Various
measures developed in SCHUBERTH's wind tunnel (such as special
adaptation of the wind deflector in the chin area and the shape
of the neck pad) as well as the choice of special materials ensure
that the helmet does not pull and makes the helmet quieter**.
This enables relaxed and enhanced concentration - especially on
long journeys. A quiet helmet is characterized by low wind noise.
Wind noise arises through turbulent swirling of the air that flows
around the helmet.
** Acoustic values can vary depending on type of motorcycle, fairing design, riding
posture and body size.
Warning:
The actual road speed can be underestimated slightly as a
result of the acoustic optimization of the helmet and the
accompanying low wind noise. I.e. don't rely on your sense
of hearing to judge road speed - check your speedometer.
Note:
Please note that with faired motorcycles strong eddy currents
occur at the edges of the wind shadow. This can considerably
reduce the aero-acoustic performance of the helmet. The
fairing of the motorcycle should be adapted so that the
departing turbulence does not strike the bottom surface of
the helmet.
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