Centre National De La Recherche Scientifique

Safran Aircraft Engines

Ecole Centrale De Lyon

Université Claude Bernard Lyon I

Marc Cornelius Jacob

Josselin David Florian Regnard

Paul Clément Guillaume Laffay

Fernando Gea Aguilera

Stéphane Moreau

An acoustic treatment grid intended to be mounted inside or at the outlet of a duct of a bleed valve of a turbomachine of an aircraft intended to convey a gas flow, the grid comprising a perforated plate and circular orifices traversing the perforated plate along a first direction, the orifices having a diameter and a geometrical center. Each orifice is separated from an adjacent orifice by a space, the length of which is equal to the product of the diameter of said orifice and a spacing coefficient of a value between 1.1 and 6.

Optimised discharge line grid and optimized discharge valve

Discharge grate intended to be mounted inside or at the outlet of a conduit of a discharge valve of a turbine engine of an aircraft, the discharge grate comprising an upstream face intended to receive a gas flow, a downstream face parallel to the upstream face and intended to deliver the gas flow received on the upstream face, and orifices passing through the perforated plate from the upstream face to the downstream face and intended to convey the gas flow through the perforated plate. The discharge grate comprises for each orifice of the perforated plate a tubular channel, coaxial with the orifice with which it is associated, and projecting from the downstream face of the perforated plate.

Acoustically optimized discharge line grid with channels

Growing community of inventors

Lyons, France

Marc Cornelius Jacob