AIRCRAFT PROPELLER BLADE UNIT Russian patent published in 2009 - IPC B64C11/06 

FIELD: transportation; aviation.

SUBSTANCE: present invention pertains to an aircraft propeller blade unit for aircraft propeller blades (2) changing pitch along the axial direction. In bushing (1) of the propeller, separately, in accordance with the number of clamping devices (3) of the propeller blades, several blades (2) are fixed, each of which has on axial root (4) of the blade, primary bearing (5) for changing pitch and secondary bearing (6) for changing pitch and is fitted in clamping device (3) with provision for rotating along the longitudinal axis. The primary and secondary bearings (5, 6) for changing pitch are in form of slanting bearings, with top packing ring (7, 9) and bottom packing ring (8, 10) respectively, as well as rolling body (11, 12). In bushing (1) there is canister (13) of lubricating oil, from which lubricating oil goes into the primary and secondary bearings (5, 6).

EFFECT: reduced loss of lubricating oil.

9 cl, 1 dwg