The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2024
Filed:
Oct. 08, 2021
Safran Aircraft Engines, Paris, FR;
Safran Transmission Systems, Colombes, FR;
Caroline Marie Frantz, Moissy-Cramayel, FR;
Gilles Alain Marie Charier, Moissy-Cramayel, FR;
Matthieu Bruno François Foglia, Moissy-Cramayel, FR;
Adrien Louis Simon, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
SAFRAN TRANSMISSION SYSTEMS, Colombes, FR;
Abstract
A propulsion system includes a drive shaft that rotates about an axis, a fan, a fan shaft that drives the fan about the axis, a reduction mechanism coupling the drive and fan shafts, a compression section driven by the drive shaft, and an inlet channel that extends between the fan and the compression section. The inlet channel includes inner and outer ferrules delimiting an air inlet flow path, the inner ferrule having a minimum radius. The reduction mechanism includes two reduction stages including two or more planet gears circumferentially distributed around the axis, each planet gear including a first portion meshed with the drive shaft and a second portion meshed with the fan shaft and being mounted fixed with respect to the inner ferrule and having a maximum radius greater than the minimum radius such that the air inlet flow path extends partly between the two or more planet gears.