Stamping engine thrust performance optimization method based on chaotic particle swarm optimization

Abstract

The invention discloses a method for optimizing the thrust performance of a ramjet, and the method comprises the steps: randomly generating a population of a plurality of particles, each particle comprising the position of each air inlet of the ramjet and the incident angle of the air inlet; calculating the thrust of each particle; arranging the particles in a descending order according to the reciprocal F of the thrust, then introducing the chaotic algorithm to update the particle swarm, recalculating the F of the updated new population, and then updating the globally optimal solution of the algorithm; and repeating the steps until the conditions are met, stopping calculation, and respectively adjusting the air inlet position and the air inlet incident angle of the engine according to the particle parameter with the minimum F. According to the method, the position and the incident angle of the air inlet of the engine are adjusted under the actual complex working condition, the maximum thrust is obtained, and the global search capability is improved in the optimization process of the algorithm.

Description

technical field [0001] The invention relates to an engine performance optimization method, in particular to a ramjet thrust performance optimization method based on a chaotic particle swarm algorithm. Background technique [0002] The oxidant of the ramjet engine comes from the high-speed flow around the aircraft during flight. Compared with the rocket engine, the ramjet engine reduces the weight of the aircraft. At the same time, compared with the turbine engine with complex structure and high cost, the ramjet engine has a simple and reliable structure, low cost, and is suitable for high-speed flight conditions. These features are in line with modern requirements for aircraft. Therefore, the importance of the ramjet engine is self-evident, and it has always been the focus of aerospace engine technology research in various countries. The oxidant of the ramjet engine is provided by the air inlet arranged in a ring, and the high-speed incoming air is compressed and injected ...

AI Technical Summary

Problems solved by technology

The above method requires a large number of experiments, and the selected parameter combination is blind

In addition, the influence of the position of the air inlet and the angle of incidence on the thrust of the engine presents a complex nonlinear influence relationship, which cannot accurately and effectively obtain the best combination in the global space

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