Automatic optimization design system for aerodynamic configuration of hypersonic flight vehicle

Abstract

The invention discloses an automatic optimization design system for the aerodynamic configuration of a hypersonic flight vehicle. Comprising the following steps: presetting parameterization design to generate a CST function of an aircraft profile, and obtaining values and incoming flow conditions of all design variables contained in the function; according to given values of the design variables, the level number of each design variable is counted, and a sample library of complete factorial design is generated; estimating aerodynamic coefficients of the samples in the sample library by adopting a Newton method and a cone cutting / wedge cutting method; generating a data point file and a model file corresponding to the shape of the aircraft; calling grid drawing software to automatically generate an unstructured grid file; uploading to a terminal to carry out CFD calculation; and carrying out multi-factor variance analysis on pneumatic data of all samples, constructing an agent model on the basis of the multi-factor variance analysis, and displaying an optimization result in a visual window. According to the method, sample preparation and optimization can be automatically completed, the process is simplified, rapid and automatic modeling and optimization of various aircrafts can be realized by changing the CST function, and the method has good expansibility.

Description

technical field [0001] The invention relates to the field of aircraft aerodynamic optimization design, in particular to an automatic optimization design system for the aerodynamic shape of a hypersonic aircraft. Background technique [0002] At present, when optimizing the design of hypersonic vehicles, there is no software specifically for hypersonic vehicles. Commercial software such as iSight, which is widely used in the field of optimization, is designed for the optimization of low-Mach number aircraft, and cannot carry out aerodynamic calculations in a high-level state, and cannot complete the sample preparation work before optimization. If the sample preparation and optimization of the hypersonic vehicle are separated and carried out in different software, it needs to be completed through repeated and complex human-computer interaction. Human-computer interaction relies heavily on the experience of optimization design workers, and needs to fully understand the details...

AI Technical Summary

Problems solved by technology

Commercial software such as iSight, which is widely used in the field of optimization, is designed for the optimization of low-Mach number aircraft, and cannot carry out aerodynamic calculations in a high-level state, and cannot complete the sample preparation work before optimization.

If the sample preparation and optimization of the hypersonic vehicle are separated and carried out in different software, it needs to be completed through repeated and complex human-computer interaction

Human-computer interaction is very dependent on the experience of optimization design workers, and needs to fully understand the details and skills of many software uses, which increases the workload of optimization workers and makes the optimization process more complicated

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