Composite aerodynamic blade with twin-beam spar

摘要: A composite aerodynamic blade having twin-beam spars, which is fabricated in two halves are eventually joined. Each spar assembly includes a comprising plurality of high tensile strength fiber members bonded together to form extending from substantially the tip root and connecting loop inboard end core. cuff member, including selectively shaped wedge member through fibers thereof, redundant provisions for rotor hub. Two such assemblies opposite sides cover so that carries torsional loads. This forms triple, centrifugal bending load paths present between each For purposes shape stability, central low-density core may be cover. In modified blade, torque-tube envelop trailing edge pockets thereto cross section.