AI-regulated mixing device for inner and outer ducts of afterburner

Abstract

The invention discloses an AI-regulated mixing device for inner and outer ducts of an afterburner, and belongs to the field of aero-engine afterburners. The device is characterized in that an air flow inclination angle and an air inlet amount of the outer duct are changed by changing spatial positions of mixing device blades so that an outlet temperature and speed are uniformly distributed, flow loss is reduced and infrared stealth is realized; when distribution of the outlet temperature and speed needs to be adjusted, a control terminal calculates required fuel flow according to current inlet parameters of the afterburner, then calculates space attitude angles of the mixing device blades, namely rotation angles of the mixing device blades, converts the space attitude angles into adjusting signals, and transmits the adjusting signals to a hydraulic mechanical system; and the mechanical system controls a telescopic supporting rod to move through hydraulic energy, so as to control the mixing device blades to rotate. According to the device, the distribution of the outlet temperature and speed of the afterburner are adjusted by changing the the air flow inflow inclination angle and the air inlet amount of the outer duct so that the outlet temperature and speed are uniformly distributed, the flow loss is reduced, and the infrared stealth is achieved.

Description

technical field [0001] The invention belongs to the field of high thrust-to-weight ratio aero-engine afterburner, and specifically refers to an AI (Artificial Intelligence) regulated afterburner chamber and external culvert mixing device. Background technique [0002] Since the beginning of the last century, countries have been scrambling to develop the aviation industry, and the engine, as the core power device of the aeronautical vehicle, has also developed rapidly, and its performance and other design indicators are also getting higher and higher. For military fighter jets, in order to satisfy its superior combat performance and expand the flight envelope, the engine must obtain greater thrust in a shorter period of time. This requires the engine to provide greater power and a higher thrust-to-weight ratio, and the afterburner system was born from this. The mixing device on the wall of the afterburner inside and outside the shunt ring makes the high-temperature gas flowi...

AI Technical Summary

Problems solved by technology

At present, the turbofan afterburner mostly adopts the structure of annular mixer and lobe mixer, which has the disadvantages of uneven mixing and fixed structure, and cannot meet the design requirements of the latest afterburner.

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