| 摘要 |
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.
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