METHOD OF MANUFACTURE OF HOLLOW COMPOSITE PROPELLER BLADE Russian patent published in 1997 - IPC

FIELD: manufacture of propeller blades of composites based on woven and thread reinforcing fillers and polymeric binders for powered delta gliders and light aeroplanes. SUBSTANCE: blank members are made in the form of blade halves with the propeller blade shank of a set of woven lobes placed one on another. Separating film is placed between the lobes in the sections forming at assembly propeller-blade leading edge 2. At assembly the lobes of both halves are laid on one another with an overlapping removing the separating film. Then the propeller blade shank is connected to metal bushes, and sealed bag 10 is taken in the blank cavity on the side of propeller- blade trailing edge, the bag edge is fastened between the blanks of the blade halves. Then hot press moulding is carried out. The edge of bag 10 is fastened between half-moulds 11. EFFECT: facilitated procedure. 5 dwg