DISC WITH FAN BLADES FOR TURBOMACHINE, TURBOMACHINE FAN AND AIRCRAFT ENGINE Russian patent published in 2020 - IPC F01D5/34 

FIELD: machine building.

SUBSTANCE: disc with fan blades for turbomachine comprises hub limited by front and rear sides, as well as outer peripheral surface and inner surface of rotation. On outer peripheral surface of hub there are blades, each of which has front and rear edges. Hub and blades make single-piece system, in which front and/or rear side is offset, being located along axis of rotation between front and rear edges of blades. Disc with blades comprises a filling element applied on the offset surface, and comprises an inner centring rim interacting with the inner hole of the hub, a radial portion located in abutment on the offset surface, and an outer rim extending along the outer peripheral surface of the hub to elongate the outer peripheral surface. Each blade comprises elongation of its front or rear edge in direction of rotation axis, by means of which it is connected to shifted surface of hub. Outer rim comprises set of teeth or recesses, in which each elongation of blade enters, when filler element is installed. Other inventions of the group relate to a turbomachine fan and an aircraft engine containing the above disk with blades.

EFFECT: group of inventions allows reducing the weight of disc with turbomachine blades.

8 cl, 8 dwg