e menacing snarl of the Ferrari soundtrack echoed through the glens and as a breeze threatened to whip up a mini storm we deployed the new wind deector which cuts air ow in the cabin by a third and also reduces aerodynamic noise
The menacing snarl of the Ferrari soundtrack echoed through the glens and as a breeze threatened to whip up a mini storm we deployed the new wind deflector which cuts air flow in the cabin by a third and also reduces aerodynamic noise
arises from the interaction of the airfoils or blades with the wind.
Generally speaking, centrifugal fan noise is composed of electromagnetic noise, mechanical noise and aerodynamic noise
, among which aerodynamic noise
is often a prominent contributor including rotating noise and vortex noise [5, 6, 7], as illustrated in Figure 10.
This results in an appreciable reduction in aerodynamic noise
in the cabin.A A
 conducted the reduction of aerodynamic noise
radiating from a circular cylinder by the control of the PAs on the cylinder.
A new wind deflector which, when the top is dropped, cuts air flow inside the cabin by 30 per cent and also reduces aerodynamic noise
Seal noise generation is estimated by models and found that the sound transmission from the exterior to the interior through side-glass windows and seals as the primary aerodynamic noise
sources [8, 13].
reduction is also one of the key issues in modern civil aircraft design in past several decades.
According to the source of the internal combustion engine, the noise can be divided into mechanical noise, combustion noise, and aerodynamic noise
The most important source of aerodynamic noise
of induction motors is the fan.