How a tiny device cuts aircraft noise | EurActiv

The DLR attached a 5-cm triangular piece of aluminum sheet metal upstream of the two vents on each wing, in order to divert the air flow and stop the whistle.

A decade of research went into the vortex generator, which stems from efforts to mask a similar whistle produced when air blows over the gun ports of warplanes.

via Small is beautiful: How a tiny device cuts aircraft noise | EurActiv.

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