Snecma Moteurs

Patrick Rossi

Jean-Luc Soupizon

Maurice Guy Judet

Jean-Claude Christian Taillant

Patrice Rosset

Patrick J Girard

Charles Balleron

José Lopez

Henri Popinet

Xavier Lescure

Sandrine Tourbier

Claude Bion

In a moving turbine wheel, blade inserts are used with at least two blades interconnected by common outer and inner platforms and sharing a common root. The blade inserts have hollow roots in which respective recesses are formed, and the insert roots belonging to the same wheel and/or two different wheels are voluntarily given different configurations in order to adjust the resonant frequencies of the inserts to values that are significantly different, thereby ensuring that the inserts in the same wheel and/or between two different wheels are out of tune.

Turbomachine turbines with blade inserts having resonant frequencies that are adjusted to be different, and a method of adjusting the resonant frequency of a turbine blade insert

A ventilation device for a high pressure turbine rotor in a turbomachine, the turbine comprising upstream and downstream turbine disks fitted with blades, the device comprising a cooling circuit being supplied by a cooling airflow D taken from the back of the combustion chamber. The circuit is such that the airflow passes through orifices formed in an upstream flange of the upstream disk, such that this airflow circulates in the axial direction towards the downstream side between an inner reaming of the upstream disk and a downstream flange of the downstream disk, the device also comprising a labyrinth inserted between the two disks, such that the airflow is divided into a first flow F1 and a second flow circulating on each side of labyrinth towards the blades.

Ventilation device for a high pressure turbine rotor of a turbomachine

Growing community of inventors

Asnieres sur Seine, France

Patrick Rossi