FIELD: motors and pumps.
SUBSTANCE: wide-chord fan blade of a gas turbine engine consists of a base, a metal sheath and load-bearing power elements installed in the cavity inside the metal sheath and damping material. It contains an end plug, with which the load-bearing power elements are rigidly connected, which, in turn, are made of an alloy of titanium with aluminum, obtained by 3D printing. Percentage composition of titanium from the center to the periphery decreases from 100 % to 0 %. Percentage composition of aluminum increases from 0 % to 100 %. Between the base and the end plug, intermediate partitions are installed, through the holes in which the load-bearing power elements pass. Damping material 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. Cavities between load-bearing power elements can be filled with a damping material. 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.
EFFECT: simplification of design, increase in the impact and vibration strength.
7 cl, 10 dwg
