FIELD: machine building.
SUBSTANCE: invention relates to the field of mechanical engineering, namely to fan blades with a damper for damping vibrations, including long hollow wide-chord fan blades. Fan blade of the gas turbine engine contains a base, a metal shell and load-bearing power elements installed in the cavity within the metal shell. It contains an end plug with which the load-carrying power elements are rigidly connected, intermediate partitions are installed between the base and the end plug, through the holes in which the load-bearing power elements pass. Damping material in the form of honeycombs filled with hollow aluminosilicate microspheres is placed in the cavity between the intermediate partitions and between the end plug and the intermediate partition. Dampers can be installed in the holes of the intermediate partitions. Load-bearing power elements can be pre-tensioned. Load-bearing power elements can have rectangular cross-section. Load-bearing power elements can have circular cross-section. Change in the percentage composition of titanium and aluminum can be made discretely. Change in the percentage composition of titanium and aluminum can be made continuously. Load-bearing power elements can have rectangular cross-section. Load-bearing power elements can have circular cross-section. Load-bearing power elements can be have quadrangular cross-section, with the two walls repeating the internal profile of the shell sections in contact with them.
EFFECT: increase in inpact and vibration strength.
5 cl, 15 dwg
