AIRCRAFT PROPELLER Russian patent published in 2003 - IPC

FIELD: aviation. SUBSTANCE: proposed propeller includes ellipsoid boss 1 and blades which have leading edges 3 and trailing edges 4. Each blade has working surface 5. Tips of blades are provided with end fences 6 which are located on side of trailing edge at angle β. relative to working surface 5. End fences 6 are provided with curvilinear edges at maximum curvature near trailing edge 4. End fence of each blade is flat in shape forming angle of 90 to 135 deg. together with working surface; its height above working surface is equal to 0.5 to 3.5% of propeller diameter. EFFECT: enhanced efficiency. 5 cl, 3 dwg