Aerial propellors more especially for aircraft propulsive units

摘要

The mean line (F) of each blade (1) is formed by a flat continuous curve contained in a plane OZ-OYo forming with the plane of rotation of the propeller an angle phi o between 35 DEG and 55 DEG and preferably between 40 DEG and 50 DEG , said curve having a first part of negative Yo and positive Z coordinates, and a second part of positive Yo and positive Z coordinates, the coordinate point Yo=0 being situated between the values of Z included between 0.75 and 0.85 R (R designating the radius of the propeller), the tangent to this curve has its end corresponding to the end of the blade forming with the axis Oz an angle between 30 DEG and 50 DEG and preferably between 35 DEG and 45 DEG .