Turbofan architecture having two front fans

Details Turbofan architecture having two front fans Turbofan architecture having two front fans

F - Mech Eng,Light,Heat,Weapons

02

K

F02K 3/065 (2006.01) F01D 25/16 (2006.01) F02C 3/067 (2006.01) F02C 7/06 (2006.01) F02C 7/20 (2006.01) F02C 7/36 (2006.01) F02K 3/04 (2006.01) F02K 3/072 (2006.01) F04D 29/04 (2006.01) F04D 29/32 (2006.01)

Patent

CA 2495594

The invention relates to a turbojet having a low-pressure compressor and two fans (3, 5) at the front of an intermediate casing (2) which fans are driven by two independent shafts (4, 6). Said compressor (7) is disposed under the rear fan (5) and has a downstream ring (18) of rotor blades (41) connecting the rear fan (5) to the drive shaft (6) of the rear fan (5), an upstream rotor blade ring (19) that is connected to the drive shaft (4) of the front fan (3) and at least one ring of stator blades (45, 46) that is disposed between the rings of rotor blades (40) and inside an outer stator (49) that is supported by a second intermediate casing (2, 60). Bearings (70, 71, 80, 81) are interposed respectively between the two intermediate casings (2, 60) and the two shafts (4, 6).

L'invention concerne un turboréacteur ayant deux soufflantes (3, 5) à l'avant d'un carter intermédiaire (2) entraînées par deux arbres indépendants (4, 6) et un compresseur à basse pression (7). Ce compresseur (7) disposé sous la soufflante arrière (5) comporte une couronne aval (18) d'aubes mobiles (41) reliant la soufflante arrière (5) à l'arbre d'entraînement (6) de la soufflante arrière (5), une couronne amont d'aubes mobiles (19) reliée à l'arbre d'entraînement (4) de la soufflante avant (3) et au moins une couronnes d'aubes fixes (45, 46) disposée entre les couronne d'aubes mobiles (40) et à l'intérieur d'un stator extérieur (49) supporté par un deuxième carter intermédiaire (60). Des paliers (70, 71, 80, 81) sont interposés respectivement entre les deux carters intermédiaires (2, 60) et les deux arbres (4, 6).

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