Solid rocket motor combustion surface data correction method, device and equipment

Abstract

The present application relates to a method, device and equipment for correcting combustion surface data of a solid rocket motor. The method includes: calculating the curve of the charge of the solid rocket motor with the burning thickness by using the minimum distance function method without point cloud encryption; The gradient of the function is used to correct the burning position; the charge burnout thickness is corrected according to the curve of the charge versus the burning thickness; the five-point quadratic fitting formula, the three-point linear fitting formula, the two-point left derivative formula and the two-point left derivative formula are used respectively. Click on the right derivative formula to perform differential calculation on the charge volume curve of the solid rocket motor, and obtain the results of the change of the burning area with the burning thickness corresponding to each formula; select the burning surface data according to each change result; the burning surface data selection includes the default burning surface Selection, burning surface selection at burnout, and burning surface selection near the sharp point; output the corrected burning thickness and burning surface area, and obtain the corrected burning surface curve. The above method has fast calculation speed and high precision.

Description

technical field [0001] The present application relates to the technical field of aircraft engine design, in particular to a solid rocket motor charge configuration setting method, device and equipment. Background technique [0002] Solid rocket motors are one of the power systems widely used in space vehicles such as missiles and rockets. The calculation of the burning surface of three-dimensional charges is an essential part of the performance simulation of solid rocket motors. Its calculation accuracy and speed are the most important factors affecting the design efficiency of engines important factor. Among the many combustion surface calculation methods, the minimum distance function method (MinimumDistanceFunction, MDF) can achieve a balance between calculation versatility, stability and calculation efficiency, and is most widely used in the engine design process. The calculation method of burning area based on MDF is usually divided into two steps: the solution of MDF ...

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Problems solved by technology

However, in the process of realizing the present invention, the inventors found that the aforementioned traditional MDF-based calculation method of burning surface has the technical problem of low calculation accuracy of burning surface

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