HELICOPTER TAIL ROTOR BLADE IN FAIRING MADE FROM THERMOPLASTIC COMPOSITE MATERIAL (VERSIONS) AND METHOD OF ITS MANUFACTURE Russian patent published in 1998 - IPC

FIELD: aeronautical engineering. SUBSTANCE: envelope lower part 6a and upper part 6b, envelope solidity elements, front spar 9, rear spar 10 and spar 7 of blade are made from composite material of one and the same thermoplastic matrix, preferably from PEEK resin preferably reinforced with carbon fibers. Spar 7 extends beyond envelope of blade by fastening part, either loop-shaped or multi-layer made from the same thermoplastic composite material. Method consists in assembly by pressure melting of all components of blade from thermoplastic composite material in one operation after manufacture of these components in the form of separate blanks. EFFECT: enhanced efficiency. 19 cl, 27 dwg