ADJUSTABLE PROPELLER Russian patent published in 2010 - IPC B64C11/00 F03D7/00 

FIELD: engines and pumps.

SUBSTANCE: proposed propeller is attached to base (1), for example with the help of rotary support (2) and comprises rotary hub accommodating blades (12) running in bearings (11), said blades being furnished with turning mechanisms. The latter comprise motors with face rotors (14) running shafts (13) and reduction gears representing worm (8) and worm wheel (9). The latter is fitted on face part (10) of blade (12). Aforesaid motors comprise common outer (3) and inner (4) face segmented stators fitted on rotary support (2). To vary pitch of blade (12), segments of stators (3) and (4) are switched in that or this direction so that torque acts in required direction on rotor (14). Thus, contactless force transfer from stators to rotary part is effected via gap between stators and rotors. Note here that stator elements arranged on rotary base and possessing increased weight do not revolve together with propeller.

EFFECT: higher reliability, reduced weight.

3 dwg