TURBOMACHINE COMPRISING A PLURALITY OF FIXED RADIAL BLADES MOUNTED UPSTREAM OF THE FAN

摘要

Bypass turbine engine, in particular for an aircraft, in which air flows circulate from upstream to downstream, the turbine engine extending axially and comprising:
an inner casing, an inter-duct casing and an outer casing (13) so as to define a primary duct between the inter-duct casing and the inner casing, and a secondary duct between the inter-duct casing and the outer casing (13),a rotary shaft comprising, at the upstream end, a movable fan comprising radial blades of which the free ends face the outer casing (13) of the turbine engine so as to compress an air flow at least in the secondary duct,a plurality of variable-pitch radial stator vanes (5) mounted upstream of the movable fan so as to deflect the incident axial air prior to it being axially rectified by the movable fan in the secondary duct,means for individually regulating the pitch of the variable-pitch radial vanes (5) if heterogeneity of the air flow in the secondary duct is detected.

主权项

1. Bypass turbine engine (1), in particular for an aircraft, in which air flows circulate from upstream to downstream, the turbine engine (1) extending axially and comprising:
an inner casing (11), an inter-duct casing (12) and an outer casing (13) so as to define a primary duct (V1) between the inter-duct casing (12) and the inner casing (11), and a secondary duct (V2) between the inter-duct casing (12) and the outer casing (13), a rotary shaft (BP) comprising, at the upstream end, a movable fan (2) comprising radial blades (20) of which the free ends face the outer casing (13) of the turbine engine so as to compress an air flow at least in the secondary duct (V2), said turbine engine (1) is characterised in that it comprises a plurality of variable-pitch radial stator vanes (5) mounted upstream of the movable fan (2), said variable-pitch vanes being configured to deflect the incident axial air (F) and the movable fan being configured to axially rectify said air deflected in the secondary duct (V2), and means for individually regulating the pitch of the variable-pitch radial vanes (5) if heterogeneity of the air flow in the secondary duct is detected.