METHOD OF MAKING GAS TURBINE ENGINE BLADE FROM COMPOSITE MATERIAL Russian patent published in 2019 - IPC B29D99/00 B29B11/16 B29C70/24 F01D11/00 F01D5/28 

FIELD: turbines or turbomachines.

SUBSTANCE: invention relates to a method of making a gas turbine engine blade (100) made of a composite material containing a fiber reinforced by a matrix. Method involves multilayer weaving to produce a first fibrous workpiece (1) in form of a single part. Said first workpiece (1) comprises first part (2) forming a workpiece of blade root and extended by second part (3) having thickness smaller than that of first part (2). Said second part (3) forms stud workpiece. Multilayer weaving is then performed to produce a second fibrous workpiece (4; 14; 14') in the form of a single part. At that, said second workpiece (4; 14; 14') comprises first part (5; 15; 15') formed by two walls (5a; 5b; 15a; 15b; 15'a; 15'b), limiting internal seat (6). Said first part (5; 15; 15') forms a billet, and at least one second part (7; 17; 17') extending from outer surface of said walls (5a; 5b; 15a; 15b; 15'a; 15'b). Said at least one second part (7; 17; 17') forms a workpiece of the platform. Then, first workpiece (1) is joined in hardened or non-reinforced state with second workpiece (4; 14; 14') in non-reinforced state by fitting second part (3) of first workpiece (1) into inner seat (6) of first part (5; 15; 15') of second billet (4; 14; 14'). Thereafter, first (1) and second (4; 14; 14') workpieces thus joined are sealed to produce a gas turbine engine blade (100).

EFFECT: disclosed is a method of making a gas turbine engine blade.

10 cl, 9 dwg