ROTOR BLADE TIP SECTION

摘要

A main rotor blade includes a tip section having a splice cap, a structural tip spar, a core and an upper and lower tip skin. The tip section is mounted to a central blade section by mounting the tip spar to a main blade spar. Th e tip spar includes a first surface substantially parallel to a second surface . The first and second surfaces each extend from a shear web therebetween to define the generally C-shape in cross section. The shear web generally carri es rotor blade torsional loads and eliminates the heretofore required structura l core. A section of the tip spar overlaps a section of the main blade spar. T he tip section thereby transfers the loads carried thereby through interaction between the overlapped spar sections. The tip section core and skins need no t be structural members as the tip spar carries rotor blade tip section torsional loads.