Mechanical device for combining first and second control orders, and an aircraft provided with such a device

A rotary wing aircraft provided with at least one rotary assembly, a support, and a mechanical device suitable for combining first and second control orders for controlling the blade pitch of said rotary assembly, said control orders being given respectively by a main link and by one secondary link per rotary assembly, the main and secondary links being connected to flight controls of said aircraft, wherein the aircraft comprises:

• a carrier structure provided with first and second end zones, said first end zone being fastened to said support by at least one main fastener pin about which said carrier structure is capable of performing a pivoting movement, said second end being provided with a primary hinge hinged to said main link;
• first and second connection levers disposed on either side of said carrier structure, first and second ends of the first connection lever being provided respectively with a first secondary hinge and with a first control hinge for being connected to a first secondary link and to a first control rod for controlling the pitch of the blades of the first rotary assembly, first and second ends of the second connection lever being provided respectively with a second secondary hinge and with a second control hinge suitable for being connected to a second secondary link and to a second control rod for controlling the pitch of the blades of the second rotary assembly;
• a first secondary fastener pin of the first connection lever connected firstly to said carrier structure and secondly fastened by first rotary means to the first connection lever;
• and
• a second secondary fastener pin of the second connection lever being secured first to said carrier structure, and being fastened secondly by second rotary means to the second connection lever.