An adjustable pitch propeller comprises a drive shaft 2, hub (1 fig 1) and blades 3. Each blade includes a fixed pitch portion (4 fig 1) fixed relative to the hub and a pitch change flap 7 pivotable about a pitch change axis (14 fig 5) extending along a trailing edge (6 fig 1) of each blade. A pitch change mechanism on the hub adjusts the angle of the flap. The flap may be supported by a pivot pin 16, which may carry a pitch change arm (18 fig 5). The arm may be engaged with a control head 20 movable axially of the drive shaft. The control head may be movable by a compression spring 26 located in a chamber. The spring may act between the control head and an end wall 27 of the chamber. A screw thread adjuster may engage with the control head to vary the spring. The control head may be movable remotely by a rod (30 fig 10), cable or hydraulic fluid passing inside the drive shaft. An outer end of each blade may carry a tip plate (15 fig 3).


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    Title :

    Adjustable pitch propeller


    Contributors:

    Publication date :

    2017-12-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



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