UNDULATING STATOR FOR REDUCING THE NOISE PRODUCED BY INTERACTION WITH A ROTOR

摘要

A stator designed to be placed radially in a flow which passes through one or more rotors which share the same axis of rotation, with a leading edge and a trailing edge. The leading edge and trailing edge are connected by a lower face and an upper face, wherein at least one of the faces of the stator has radial undulations which extend axially from the leading edge to the trailing edge. The radial undulations can have at least two bosses in the same azimuth direction, the amplitude of which is at least one centimeter on at least part of the axial length of the stator. A propulsion assembly formed by the rotor and the stator, and to a turbine engine comprising such assembly is also provided.

主权项

1. Assembly comprising one or more rotors which share the same axis of rotation, and at least one stator which is designed to be placed radially in a flow which passes through said rotor(s) upstream or downstream thereof, said stator having a leading edge and a trailing edge, said leading edge and trailing edge being connected by a lower face and an upper face, wherein at least one of the faces of said stator has radial undulations which extend axially from the leading edge to the trailing edge, said radial undulations having at least two bosses in the same azimuth direction, the amplitude of which is at least one centimeter on at least part of the axial length of the stator, and in that, with the assembly being designed such that the crossing of said flow by the stator creates on said undulating surface pressure fluctuations with oscillations of the temporal phase according to the radial position, the radial undulations of said face have azimuth maximums and/or minimums in the vicinity of the zero mean dephasing regions for the pressure on the undulating face.