초록 ▼

What follows is a description of a composite aerodynamic rotor blade assembly which has been optimized from the standpoint of both fabrication cost and structural integrity. The rotor blade is fabricated using fewer overall assemblies to optimize cost and includes an aft fairing structure which is u

What follows is a description of a composite aerodynamic rotor blade assembly which has been optimized from the standpoint of both fabrication cost and structural integrity. The rotor blade is fabricated using fewer overall assemblies to optimize cost and includes an aft fairing structure which is uniquely characterized in that it includes not only the typical elements of an aft fairing structure of the composite blade, but the spar heel as well. In assembly the skin members of the aft fairing structure are secured between the spar heel and the cap member of the assembly. This insures a fail-safe design and in this way the skin members are enabled to carry load effectively. The deicing blanket is assembled with the spar and cap member so that its supporting structural material serves as a load carrying member. Also, the spar, the inboard termination of the cap member, and the spar heel together form the root end of the rotor blade into which the torsion splices are formed.

대표청구항 ▼

An aft fairing structure for a composite aerodynamic rotor blade assembly which includes a partially completed elongated composite load bearing structure spar member, the aft fairing structure comprising: (a) a core having top, bottom, front, rear and side surfaces; (b) an elongated composite load b

An aft fairing structure for a composite aerodynamic rotor blade assembly which includes a partially completed elongated composite load bearing structure spar member, the aft fairing structure comprising: (a) a core having top, bottom, front, rear and side surfaces; (b) an elongated composite load bearing structural spar heel secured to the front surface of the core and being spanwise coextensive with the partially completed composite load bearing structural spar member, said composite load bearing structural spar heel having a configuration complemental with the partially completed composite load bearing structural spar member for forming in assembly with the partially completed composite load bearing structural spar member a complete composite load bearing rotor blade spar of unitary structure which serves as the predominant load bearing member of the rotor blade; and (c) top and bottom composite skin members secured to the top and bottom surfaces of the core and to the composite load bearing structural spar heel, wherein the composite load bearing structural spar member, the composite load bearing structural spar heel and the composite skin members are fabricated of pre-impregnated fiber material which is structuralized by the application of heat and pressure.