Method for dimensioning a turbomachine

US10401161B2 · kind B2 · utility

Assignees

• SAFRAN AIRCRAFT ENGINES · FR
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
• ECOLE CENTRALE DE LYON · FR
• Ecole Nationale d'Ingenieurs de Saint-Etienne · FR

Inventors

• Marie-Océane Parent · Bristol, GB
• Fabrice Chevillot · Moissy-Cramayel, FR
• Fabrice Hugues Jean Pierre Thouverez · Tassin-la-Demi-Lune, FR

Key dates

• Filing date: Jun 3, 2015
• Grant date: Sep 3, 2019
• Expiry date: Jul 2, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B21/32
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention relates to a method for dimensioning a turbomachine comprising a casing and a disc to which at least one blade is secured, said disc being rotationally driven by a shaft about a turbomachine axis (z), comprising: —acquisition (E1) of the coordinates (P) of the ends of the leading edge and of the trailing edge of the blade in a frame of reference connected with the disc; —expression (E2) of the coordinates (P′) of the ends of the leading edge and of the trailing edge of the blade in a frame of reference connected with the casing; —calculation (E3) of the distance (g) between the casing and the ends of the leading edge and trailing edge of the blade from the coordinates (P′) expressed in the frame of reference connected with the casing; —calculation (E4) of the contact pressures between the blade and the casing along the end of the blade from the calculated distance (g); —calculation (E5) of the reaction forces and moments resulting from contact between the blade and the casing from the calculated pressures; —dimensioning (E6) of the turbomachine as a function of the calculated distances, pressures, forces and moments.