A Flame Stabilizer Considering Radar Stealth

Abstract

The application belongs to the technical field of afterburner design, and in particular relates to a flame stabilizer which takes radar stealth into consideration. The stabilizer is mainly composed of the front section of the stabilizer and the box body of the stabilizer. The box body of the stabilizer and the front section of the stabilizer are hinged through the shaft of the stabilizer. The baffle at the rear end of the stabilizer box, or the stabilizer box protrudes from the front of the stabilizer and opens the baffle at the rear end of the stabilizer box. This application adds an opening and closing mechanism to the flame stabilizer, so that the flame stabilizer has different shapes in the non-augmented state and the augmented state of the engine, so that it can significantly reduce the three aspects of flame spread, flame stability and radar shape of the flame stabilizer Taking into account the difficulty of design.

Description

technical field [0001] The application belongs to the technical field of afterburner design, and in particular relates to a flame stabilizer which takes radar stealth into account. Background technique [0002] With the gradual increase in the stealth performance requirements of aero-engines for stealth aircraft, the afterburner is also developing in the direction of regular flow channel profiles and the application of radar modification technology. For high-stealth afterburning turbofan engines, aircraft often require them to have better radar stealth capabilities in the Asian patrol state. For this reason, the afterburner of the engine mostly adopts an integrated design, and the fuel injection and ignition devices are integrated in the flame stabilizer, and the flame stabilizer has a regular shape and adopts a radar modified design. For example, the afterburner of the M88 engine adopts the integrated design of the fuel injection rod and the stabilizer. The V-shaped radial...

AI Technical Summary

Problems solved by technology

[0004] The advantage of the V-shaped radial flame stabilizer used in the afterburner is that the flame spread ability and stable combustion ability are good, but the radar stealth performance is poor. The wide V-shaped structure and the concave configuration make the flame stabilizer radar strong signal

In order to ensure the radar stealth performance of the engine, figure 1 The radial strut plate stabilizer of the afterburner shown in the figure is relatively regular in shape, the thickness of the stabilizer is relatively thin, and the trailing edge of the stabilizer adopts a radar modification design, that is, the trailing edge of the stabilizer is inclined at a certain angle. This design makes the flame The radial propagation path increases, and it is difficult to form a stable vortex at the end of the support plate, which is not conducive to the radial propagation of the flame and the stable combustion of the flame at the end of the stabilizer, which greatly increases the difficulty of designing the combustion performance of the afterburner, which is not conducive to the afterburner. Stable operation of the combustion chamber

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