Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1980-02-08
1981-11-03
Crane, Daniel C.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156245, 1563073, 1563077, 291568P, B32B 110
Patent
active
042984173
ABSTRACT:
A rotor blade, specially for a helicopter rotor, which blade is made of reinforced plastics and a process for making this blade in a single molding operation.
This blade comprises: a solid one-piece leading edge spar embodied by strands of glass fibre filaments extending lengthwise over the whole length of the blade; a core made of a lightweight cellular substance and placed contiguous with the spar rear face; a thick sheet-like member extending around the spar and the core and comprising at least one layer of a fabric consisting of parallel glass fibres disposed askew of the blade longitudinal axis so as to form a torque-tube; a rear filling element, and a covering extending around the torque-tube and the rear filling element. The airfoil portion of this blade is centered substantially in the front quarter of the chord of the blade cross-section and it has a very high torsional stiffness.
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"Boeing Emphasizes Glass Fiber Rotors", from Aviation Week _and Space Technology, Mar. 20, 1978, vol. 108, No. 12, McGraw-Hill, _Inc., p. 57.
Beziac Gilbert F. A.
Euler August H. L.
Crane Daniel C.
Societe Nationale Industrielle Aerospatiale
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