| 摘要 |
The turbine engine includes respective systems for changing the pitch of the propeller blades, the system (22) for the upstream propeller including a linear actuator (23) and a transmission mechanism (24) connecting the actuator to the blades in order to transform the sliding of the actuator into a rotation of the blades, said upstream propeller (2) including a rotatable housing (19) rigidly connected to a rotatable shaft (17) supported in a static housing (27) of the turbine engine by a bearing (29) upstream of the system, and by a bearing (30) downstream of the system. Advantageously: the rotatable housing (19) of the upstream propeller includes a support (36) rigidly connected to said rotatable housing and surrounding the static housing (27), the actuator (23) is annular and fixed to the support (36) of the rotatable housing, outside the support, and the transfer mechanism comprises connecting rods (33) and rotatable radial arms (34) traversing the gaseous flow path in order to control the pitch of the blades, and the downstream bearing (30) is provided between the static housing (27) and the support (36), inside said support (36). |
