Aero-engine design point parameter design method

Abstract

The invention discloses an aero-engine design point parameter design method which comprises the following steps: establishing a design model of each component design point, designing the design point parameter according to the engine configuration through engine aerodynamic thermodynamics calculation, and realizing the design and adjustment of the engine design point parameter according to the proposed design point parameter index and design method. The method solves the problem of self-adaptive cycle engine design point parameter selection, is suitable for determining the design state of the aero-engine, provides reference for aero-engine modeling, model correction, engineering application and the like, and has certain practicability.

Description

technical field [0001] The invention relates to the field of aero-engine modeling, in particular to an aero-engine design point parameter design method. Background technique [0002] With the in-depth research on variable cycle engines in various countries around the world, variable cycle engines have combined the low fuel consumption of medium and high bypass ratio turbofan engines in subsonic cruising conditions and the performance of small bypass ratio turbofan engines in supersonic flight conditions. The advantages of high unit thrust performance are becoming more and more obvious. Countries all over the world, especially the United States, have invested heavily in the research of variable cycle engines and made rapid progress. Adaptive cycle engine, as the latest structural type of variable cycle engine, is the focus of research all over the world. [0003] Researchers evaluate and verify some advanced aero-engine concepts by building engine models, which greatly reduc...

AI Technical Summary

Problems solved by technology

[0004] The determination of the design point parameters needs to be designed according to the relevant indicators. It is a long process to optimize and update the engine design point parameters using the relevant indicators. It is a relatively common method to directly adjust the parameters of the engine model. Change the engine input parameters, characteristic diagram, etc. and match the calculation of the engine model. Although this method is relatively common, the adjustment process of the design point parameters is extremely complicated. Many parameters cannot directly obtain accurate values ​​and require repeated calculations.

Images