Snecma

Yann Pascal Raymond Rene Lebret

Claude Marcel Mons

Edouard Marie Gabriel Ramstein

A method for producing, on the surface of a wall capable of being swept by a fluid, raised elements forming disruptions of the boundary layer is disclosed. The method includes applying laser shocks to the surface so as to create peaks on the edge of the impact zones such that the peaks form the disruptive raised elements.

Method of using laser shock impacts to produce raised elements on a wall surface capable of being swept by a fluid in order to control the intensity of turbulence in a transition zone

A casing supporting a series of stationary vanes between which there are disposed series of moving blades movable in rotation about a longitudinal axis in which the radially outer ends of the moving blades being close to the inside face of the casing is disclosed. The casing includes, at least over an annulus situated facing one of the series of moving blades, at least one casing treatment zone facing towards the blades and including a surface relief disturbance in the form of a groove of closed outline. The invention is applicable to controlling rotating separation in a turbomachine compressor.

Turbomachine casing with treatment, a compressor, and a turbomachine including such a casing

A nose cone for a turbomachine, such as a turbojet in particular, the cone being mounted on the end of a shaft carrying fan blades and being associated with a controlled axial displacement mechanism, thereby making it possible to modify the axial position of the cone relative to the fan blades.

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Maincy, France

Yann Pascal Raymond Rene Lebret