OPEN AIR PROPELLER FOR TURBINE MACHINE Russian patent published in 2015 - IPC B64C11/06 

FIELD: transport engineering.

SUBSTANCE: invention relates to aviation, in particular to the design of turbo-propeller engine. The turbine machine contains at least one open air propeller with blades having adjustable installation angle, their locks from outside enter the radial socket of the ring element of the rotor, and are directed during rotation relatively to their axes by two roller bearings (76, 94). The first roller bearing (76) is installed in ring collar (78) of radially to internal end of the socket. The second roller bearing (94) is installed on the ring segment (54) with cylindrical skirt (56) installed in the groove (50) of the cylindrical body (40), and on lock nut (64) screwed on the cylindrical skirt (56) of the segment and creating the support spacer on the first bearing (76). At that the second bearing (94) is covered from outside by a ring (100) enclosing the cylindrical body (40) of the blade lock and containing outside cam teeth (108) interacting with internal cam teeth (112) of the socket for axial holding of the ring (100) in the socket. Between the cam teeth (112) of the socket and cam teeth (108) of the ring (100) the lock devices (114) are installed to prevent ring (100) rotation and its axial exit from the socket.

EFFECT: reduced labour intensity during blades installation and prevention of dirt ingress in the bearings.

11 cl, 11 dwg