Device for reducing the noise emitted by a conduit and aircraft conduit equipped with such a device

Abstract

The invention relates to a device for reducing the noise emitted by a conduit belonging to an aircraft system that comprises an acoustic grid positioned in a segment of the conduit. Said grid has a length L1, along the axis (X-X) of said segment, and includes multiple meshes, each of which fits into a square with side m, the following relationships being satisfied: L1>1.8λfmin, m<λfmax/2, where fmax is the maximum frequency of the noise to be attenuated, fmin is the minimum frequency of the nice to be attenuated, λfmax is the wavelength of the noise at frequency fmax, and λfmin is the wavelength of the noise at frequency fmin. Application to air intake and outlet conduits of aircraft systems.

Dependencies are inferred from the claim text.