METHOD FOR FLAP DESIGN MANUFACTURE OF FLOW MIXER MADE OF COMPOSITE MATERIAL FOR GAS TURBINE AIRCRAFT ENGINE Russian patent published in 2012 - IPC F02K1/38 F02K1/48 

FIELD: machine building.

SUBSTANCE: method for flap design manufacture of flow mixer of gas turbine with areas located higher and lower along the flow that form multi-lobe skirt, is that: it is made of several composite elements of fibrous texture of a preformed fibrous work piece from refractory fibres with a shape corresponding to the flap design form. These composite elements are collected together and formed by means of tooling to give a shape corresponding to the shape of manufactured flap design, in order to obtain assembled fibrous piece with the first part of the work piece corresponding to the circular part of the flap design, and the second part of the work piece corresponding to the multi-lobe skirt of the flap design. The elements of the fibrous work piece are collected together, at least partially along connecting lines passing in the direction of the flow after the flaps of the part of the multi-lobe skirt work piece. Then the collected and formed fibrous work piece is compacted by means of a matrix made at least partially ceramic. Other subjects of the invention are a flow mixer for a gas turbine comprising a flap design made in the manner described above, as well as a double-flow aircraft gas turbine engine equipped with this mixer.

EFFECT: invention enables to reduce aerodynamic losses of gas passing through the mixer.

22 cl, 30 dwg