a rotor hub for a rotary wing aircraft is described which allows the use of more than three blades on the rotor head while providing all of the required functional features . the rotor head is constructed using a central barrel to which is attached a plurality of blade attachment points on its exterior surface . the pitch arm actuating points are located inside of the hub barrel , extending from the outer surface into the hub barrel through arcuate slots in the barrel . the hub is particularly adapted for use with tilt rotor rotary wing aircraft and provides a negative delta 3 blade pitch input in response to wind gusts and abrupt pilot control inputs .