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FR-3168232-A1 - Optimized fan section of an aeronautical propulsion system

FR3168232A1FR 3168232 A1FR3168232 A1FR 3168232A1FR-3168232-A1

Abstract

An aeronautical propulsion system comprising a shrouded fan section, a ratio of the product of a mean axial chord of the blade by a root axial chord to the product of the square of a blade height (47) by a tip axial chord is less than or equal to the difference between the product of a maximum speed by the value 2.501 x 10⁻³ s/rad and the value 1.7148 x 10⁻¹, a stiffness of a lower portion (55) of the blade is greater than the stiffness of an upper portion (57), and a ratio of the root axial chord to the product of the square of the mean axial chord by the blade height (47) and by the tip axial chord is less than or equal to the difference between the product of the speed by the value 2.515 x 10⁻¹ s/rad and the value 52.701, a stiffness of the The upstream portion is greater than the steepness of the downstream portion. Figure for the abbreviation: Fig. 6

Inventors

  • Didier, René, André ESCURE
  • GUILLAUME, OLIVIER, VARTAN MARTIN
  • Adrien Jean-Louis Tito MILTENBERGER

Assignees

  • SAFRAN AIRCRAFT ENGINES

Dates

Publication Date
20260508
Application Date
20241104