Hybrid composite flex beam of main rotor assembly for no bearing of the helicopter

摘要

(57) hybrid composite flex beam main rotor assembly with no soft [summary] plane bearing (100) for (10), hub mounting area (12), the tapered area of ​​the first (14) , taper region and the second (16), the inner transition region (18), the pitch of the cross-shaped area (20), outside the transition region (22), outside the transition region tapers (24), main rotary and a region of the spanwise eight rotor blade torque tube attachment region (26). And the admixture of 50/50 ply graphite and unidirectional glass fiber plies, and glass fiber unidirectional, pitch area (20) is formed from a unidirectional graphite plies. Inner taper region and the second (16) plies of graphite and glass fiber unidirectional variable length intervening. Taper inside the first region (14), cross-ply graphite and glass fibers of variable length intervening. Outside the tapered region (24), and cross-ply graphite and glass fiber, unidirectional glass fiber plies of variable length intervening. By the distribution arrangement of the ply end, (97) occurs in (10) composite flex beam recoil load distributed across ply laminate.