FIELD: manufacture of helicopters; main rotors of rotary-wing flying vehicles. SUBSTANCE: proposed hub belongs to type of hubs whose each blades is connected with casing 1 by means of articulations and connecting members. Planes of strength members 7 and 8 are practically parallel to each other and perpendicular to axis of rotor strut 3. Both members 7 and 8 are separated from each other by space which is sufficient for placing the articulations in it; it is good practice to make articulations in form of spherical laminated stops whose at least one reinforcement is rigidly connected during motion of root of respective blade and other reinforcement is fixed relative to both members of hub housing and is located near periphery of these members to form rigid distance piece. Each members consists of outer ring 7 and inner ring 8; each ring forms rigid bead. Rings are connected by means of thin partition 9 which is practically cylindrical in shape. This partition has holes 10 whose number corresponds to number of blades. Sizes of hole 10 are sufficient for passage of members of articulation and joint of respective blade taking into account their angular deviations. EFFECT: enhanced reliability. 40 cl, 12 dwg
