Debugging method for high-altitude ignition performance of main combustion chamber of aero-engines

Abstract

The invention discloses a debugging method for high-altitude ignition performance of a main combustion chamber of aero-engines. Due to the working process in the combustion chamber of aero-engines isvery complicated, currently, there is no theoretical design method, which can only take empirical semi-empirical design. Therefore, during the research and development of the combustion chamber, a large number of experiments need to be conducted to adjust the various performances of the combustion chamber, which includes the high-altitude ignition performance of the combustion chamber. The core of the method is to find out the cause of the ignition performance failure by analysis and exploratory tests, to identify which stage of the ignition failure occurred during the ignition and to take measures accordingly.A set of systematic and practical debugging method for high-altitude ignition performance of the main combustion chamber of aero-engines are prepared in the invention to avoid the blindness in the research and development process of the combustion chamber and shorten the research and development cycle of the combustion chamber.

Description

technical field [0001] The invention belongs to the technical field of designing and testing a main combustion chamber of an aero-engine, and in particular relates to a method for debugging high-altitude ignition performance of a main combustion chamber of an aero-engine. Background technique [0002] Because the working process of the aero-engine combustor is extremely complex, and the theory is still immature, the design of the combustor is very dependent on the experiment. After the design of the combustion chamber, a large number of tests are required to correct the design scheme and size, so that the comprehensive performance of the combustion chamber can meet the overall requirements of the engine for the combustion chamber. [0003] The ignition of the combustion chamber includes ground cold-weather ignition and high-altitude ignition. The high-altitude ignition performance is reflected in the ability of the engine to stop at high altitude and then ignite, which is an...

AI Technical Summary

Problems solved by technology

[0004] When the ignition performance of the combustion chamber is low in the research and development stage, people will take measures blindly in the past, with little effect

Another common situation is that after the combustion chamber ignition failure occurs, only the ignition performance is simply adjusted, and other combustion performances are ignored. As a result, there may be major repetitions in the development of the combustion chamber, which will affect the development progress.