Safran Helicopter Engines

Turbomeca

Laurence Vial

Denis Daniel Jean Boisseleau

Sylvain Pierre Votie

Bruno Frelon

Jérôme Beugniez

Lorenzo Pons

Yann Bellot

A lattice formed of entwined links in a cavity encased by the external skin of a blade and provided with parts of low mechanical strength referred to as breakable, which are capable of rupturing when sufficient loads are applied thereto during operation of the blade. This arrangement, which concentrates the ruptures at given locations, will leave the rest of the lattice intact and therefore will not hamper or will scarcely hamper its properties of heat evacuation by conduction or convection or pressure loss, if for example ventilation air passes through it.

Hollow blade containing an internal lattice

Turbomachine hollow blade () comprising at least one vane () having lateral walls () which are intended to guide a flow in a flow path around the vane and which are fixed to a first platform () at a first longitudinal end of the vane (), the vane () further comprising an internal cavity between the lateral walls (), which cavity is intended for passing a vane-cooling fluid, with a fluid inlet opening () opening through said first platform (), characterized in that a gyroid surface network () fills at least part of the cavity, being arranged therein so as to guide the cooling fluid, and is in contact with at least part of the lateral walls ().

Turbomachine hollow blade

A turbine blade extends radially between a blade root and a blade tip having an open cavity referred to as a bathtub formed therein, which cavity is defined by a closed end wall and a side rim. The side rim of the cavity carries at least one rib extending between a leading edge and a trailing edge of the blade.

Hollow turbine wheel vane comprising a rib and associated wheel and turbomachine

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Moissy-Cramayel, France

Laurence Vial