Safran Aircraft Engines

Jean-Frederic Pierre Joseph Bruhat

Jean-Michel Roux

Philippe Jacques Pierre Fessou

Benjamin Lukowski

Anthony Bernard Germain Lafitte

Frederic Jean-Bernard Pouzadoux

Jacques Pierre Philippe

The invention relates to a method () for manufacturing a turbomachine fan comprising a plurality of blades mounted on a disc extending along a longitudinal axis, said method comprising the following steps of: &#x2014;measuring () at least one structural parameter of each of the blades in the cold state, and, for each of the blades, estimating () at least one structural parameter in operation relating to a blade from the structural parameter(s) measured on said blade in the cold state, &#x2014;determining () an optimal sequence of the blades around the disc from the structural parameters estimated in operation for each of the blades, and &#x2014;mounting () the blades on the disc in the optimal sequence thus determined.

Method for manufacturing a turbomachine fan having a reduced noise level at multiple rotational frequencies of said turbomachine

A hub of an intermediate casing for a dual-flow turbine engine includes a discharge flow duct extending between an inner shroud and an outer shroud of the hub, the discharge flow duct leading into the secondary flow space through an outlet opening formed in the outer shroud, the outlet opening included in a discharge plane substantially tangential to the outer shroud; and discharge fins including an upstream fin and a downstream fin. An upstream acute angle between the discharge plane and the skeleton line of the upstream fin is smaller than a downstream acute angle between the discharge plane and the skeleton line of the downstream fin.

Discharge flow duct of a turbine engine comprising a VBV grating with variable setting

The invention relates to a hub () of an intermediate casing () for a bypass turbomachine comprising: &#x2014;a bleed stream duct (), &#x2014;a bleed valve, comprising a mobile door at the inlet orifice to the bleed stream duct (), &#x2014;a set of bleed vanes () which are mounted with the ability to rotate about a pivot () in the bleed stream duct () between an open configuration in which a flow of air coming from the inlet orifice () passes between the bleed vanes () and a closed configuration, the pivot () for each bleed vane () being closer to its leading edge (BA) than to its trailing edge (BF).

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Moissy-Cramayel, France

Jean-Frederic Pierre Joseph Bruhat