Safran Aircraft Engines

Cyril Verbrugge

Jonathan Evert Vlastuin

Thomas Langevin

Renaud James Martet

Sébastien Jean Laurent Prestel

Clement Marcel Maurice Dejeu

Simon Jean-Marie Bernard Cousseau

Anthony Louet

Anthony Pascal Eloi Louet

Alice Pages

Clement Dejeu

Clément Dejeu

A turbine blade for a turbomachine includes a turbine blade with a leading edge and a trailing edge. The blade includes a radially outer platform with at least one lip extending radially towards the outside. The radially outer end of the leading edge and/or of the trailing edge of the turbine blade airfoil extending axially upstream and/or downstream, respectively, in relation to the platform. The blade has at least one partition extending radially towards the outside from the radially outer end of the turbine blade airfoil and axially between the leading edge and the upstream end of the platform and/or between the trailing edge and the downstream end of the platform.

Turbine blade

The invention relates to an inter-turbine casing () comprising: an inner shell (), an outer shell (), and an assembly of arms () extending radially between the timer () and outer () shells; and an assembly of splitter blades () positioned between the arms (), each splitter blade () comprising an inner platform () and an outer platform (). The inner shell () comprises at least one inner groove () for slidably receiving one or more inter platforms (). The outer shell () comprises at least one outer groove () for slidably receiving one or more outer platforms (). The inter-turbine casing further comprises locking means () for locking the splitter blades () in the inner () and outer () grooves. The splitter blades are arranged using multiple tenons () that extend in corresponding ribs ().

Inter-turbine casing comprising mounted splitter blades

A method for modeling at least a part of a blade of a non-streamlined propeller, part of the blade having an offset. The method includes (a) Parameterization of at least one Bezier curve representing a deformation of the blade characterizing the offset, defined by: a. First and second end control points (PCU1, PCUK); b. At least one intermediate control point (PCUi, i&#x2208;[[2,K&#x2212;1]]) disposed between the end points (PCU1, PCUK). The parameterization being performed according to at least one deformation parameter and the cutting height in the blade, on the basis of which the abscissa of the intermediate control point (PCUi) and the ordinate of the second end point (PCUK) are expressed. Optimized values of the deformation parameter or parameters are determined and then output.

Method for modeling a non-streamlined propeller blade

A method for modeling an offset portion of a blade of a non-ducted propeller is provided. The method includes: parametrizing a C1-class curve representing a deformation of the blade characterizing the offset, according to a position along a section at a given height in the blade, the curve intersecting consecutively through a first bend control point, a central control point, and a second bend control point, the first and second bend control points defining the extent of the blade section, the parametrization being implemented according to a first deformation parameter defining the abscissa of the central control point, a second parameter of deformation defining the ordinate of the second bend point, and a third deformation parameter defining the angle of the tangent to the curve at the second bend control point; optimizing one of the deformation parameters; and plotting the values of the optimized parameters on an interface.

Method for modeling a blade of a non-ducted propeller

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Moissy-Cramayel, France

Cyril Verbrugge