ADAPTIVE AFTERCHARGE OF GAS TURBINE ENGINE Russian patent published in 2022 - IPC F02C9/28 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, more specifically to gas turbine engines (GTE) with an adaptive afterburner (AAB). Adaptive afterburner chamber of GTE contains a body with pivotally fixed on it rotary and fixed in the radial direction flame stabilizers, provided with at least one pair of lateral branches. AAB is equipped with an annular thermal screen placed on the body behind the place of attachment of the stabilizers to the body of the adaptive afterburner, on the inner surface of the thermal screen symmetrically to the axis of the stabilizer, paired fairings are installed in an amount equal to the number of stabilizers, paired fairings are installed in such a way that in the non-operating position of the stabilizers, the said fairings were located in front of the first downstream side branches of the respective stabilizers, with each fairing made of a corner with front and rear walls. The front wall forms an aerodynamic profile with the nearest side branch of the stabilizer in the idle position of the stabilizer, and the rear wall of the fairing is made at a negative angle to the afterburner axis. A shelf is formed on the upper part of each fairing, directed towards the side branches of the corresponding stabilizer in the non-working position. On the thermal screen of the adaptive afterburner, an annular influx is formed from the side of the oncoming flow.

EFFECT: invention provides reduction of gas-dynamic losses in the gas path of the adaptive afterburner in non-afterburning modes of operation of the GTE, reduction of radar visibility in the afterburner mode, as well as reduction in the size and weight of rotary flame stabilizers.

3 cl, 3 dwg