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:
Sep. 21, 2021
Filed:
Jul. 21, 2016
Safran Aircraft Engines, Paris, FR;
Francois Gallet, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
The invention relates to an aircraft comprising a fuselage (), which is propelled by a turbine engine with two coaxial fans, namely an upstream fan () and a downstream fan (), driven by two contra-rotating rotors () of a power turbine (). The two fans () and the turbine () are integrated into a nacelle () which projects downstream from the fuselage () and through which air flows. According to the invention, at least one of the fans () of the aircraft and, in particular, the downstream fan () comprises variable-spacing blades, and at least one stator-forming variable-spacing blade ring () in the aircraft is placed upstream of the upstream fan (). The variable-spacing stator blades () and the variable-spacing blades of the downstream fan () are mutually configured to direct the air flow in a first mode in which the air flows through the nacelle () from upstream to downstream and in a second mode in which the air is pushed back upstream through the nacelle ().