F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 3/067 (2006.01) F02C 7/36 (2006.01) F02K 3/072 (2006.01)
Patent
CA 2746569
The present invention relates to a system of counter-rotating propellers (30) for an aircraft turbine engine, including: a free power turbine (32) including a first rotor (32a); first and second propellers (7, 9); and a mechanical transmission device (13) including an epicyclic train (15) with a planetary gear (17) driven by the rotor (32a), at least one satellite (21), a satellite carrier (25) driving the first propeller (7) and a gear (31) driving said second propeller (7). According to the invention, the free turbine (32) also includes a second rotor (32b) counter-rotating relative to the first rotor (32a) and rotating the gear (31).
La présente invention se rapporte à un système d'hélices contrarotatives (30) pour turbomachine d'aéronef, comprenant : une turbine libre de puissance (32) comprenant un premier rotor (32a); une première et une seconde hélices (7, 9); et un dispositif de transmission mécanique (13) comprenant un train épicycloïdal (15) muni d'un planétaire (17) entraîné par le rotor (32a), au moins un satellite (21), un porte-satellite(s) (25) entraînant la première hélice (7), ainsi qu'une couronne (31) entraînant ladite seconde hélice (9). Selon l'invention, la turbine libre (32) comprend également un second rotor (32b) contrarotatif vis-à-vis du premier rotor (32a), et entraînant en rotation la couronne (31).
Balk Wouter
Charier Gilles Alain
Gallet Francois
Goudreau Gage Dubuc
Snecma
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