Plastics rotor blade
Air craft propeller assembly with composite blades
ApplicationNo. 06/587649 filed on 03/08/1984
US Classes:416/134A, Aircraft rotors416/168R, Link connection to working member416/226, Formed with main spar416/230Wire, fiber, strand or fabric
ExaminersPrimary: Garrett, Robert E.
Assistant: Pitko, Joseph M.
Attorney, Agent or Firm
International ClassesB29D 31/00 (20060101)
B64C 11/26 (20060101)
B64C 11/00 (20060101)
B64C 27/00 (20060101)
B64C 27/32 (20060101)
B64C 27/473 (20060101)
B64C 27/82 (20060101)
F01D 5/28 (20060101)
Foreign Application Priority Data1983-03-18 FR
AbstractEach blade is fixed to the hub by the root part of the spar, arranged in the form of a loop surrounding a connection element bolted on the hub, with the interposition of rigid rings by a pin simultaneously fixing the hub on a drive sleeve transmitting thereto the driving torque of the central shaft. The hub comprises two coaxial cylindrical walls in each of which is pierced, for each blade, a circular opening in which the member for controlling the angle of attach which is fast with the blade root is mounted to rotate via self-lubricating rings. The invention is particularly applicable to helicopters.