PROPULSOR (PROPELLER) Russian patent published in 2014 - IPC B63H1/26 B64C11/00 

FIELD: transport.

SUBSTANCE: invention relates to shipbuilding and aircraft engineering, in particular to ship and air propellers where propellers are used as engines. Propulsor (propeller) contains hub, blades with inlet and outlet portions, amplitude and deviation pitch of blade outlet edge profile. Outlet portions of blades throughout their height starting from ¹/₂ of profile length at the hub and ¹/₃ of profile length at periphery are made with periodic deviations of profile angle thus forming wavy surface of outlet blade portion and wavy outlet edge relative to designed value of blade angle in each cylindrical cross-section. Amplitude and pitch of blade outlet edge profile deviations from designed height value are maximal at the hub and minimal or equal to zero at maximum blade diameter, and on each subsequent blade the start of wave at hub is displaced relative to wave start of previous blade for amount of T/z, where T is pitch of the first wave, and z is number of blades.

EFFECT: minimum running-off or radial flow deviation, better flowing characteristics of blade.

2 dwg