Disclosed is a design for high efficiency double pitch angle propellers, having a propeller hub, and two or more propeller blades with airfoil-shaped cross-section fixed around the periphery of the hub at equal angles. The blades have a geometric pitch angle together with the rotation direction as well as a second pitch angle that forms an acute angle or a wide angle with respect to the rotation axis, from its frontal side. The advantage of the second pitch angle is that it has no torque effect on the motor as there is not any force component on the rotation direction. Therefore for the additional pitch obtained from the second pitch angle. The propeller does not attract extra energy from the motor.


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    Title :

    DOUBLE PITCH ANGLE PROPELLERS


    Contributors:

    Publication date :

    2019-02-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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