Solid rocket engine mapping design method and device, and equipment

Abstract

The invention relates to a solid rocket engine mapping design method and device, and equipment. The method comprises the steps: obtaining a target thrust curve and an engine original parameter of a solid rocket engine ; performing geometric scaling on the engine original parameter; according to the engine parameter subjected to the geometric scaling, calculating the shell area, the heat insulation layer area, the charge combustion area and the thickness; calculating the nozzle throat area according to the engine parameter and the charge combustion area; determining the engine combustion speed through an optimization algorithm, and determining the throat diameter is determined according to the nozzle throat area; generating a design thrust curve according to the engine parameter, the thickness, the engine combustion speed and the nozzle throat area; calculating the root-mean-square error of the design thrust curve and the target thrust curve, and adjusting the engine combustion speed according to the root-mean-square error by using an optimization algorithm; and outputting the corresponding overall mapping design parameter of the engine when the root-mean-square error is minimum. By using the technical scheme, the technical effect of greatly improving the design efficiency is achieved.

Description

technical field [0001] The present application relates to the technical field of aircraft engine design, in particular to a solid rocket motor mapping design method, device and equipment. Background technique [0002] Solid rocket motors are one of the important power systems of space vehicles such as missiles and rockets. In view of the accumulation of solid rocket motor design schemes, a research on the intelligent reuse method of heterogeneous engine scheme data is established to realize the reuse of heterogeneous engine design scheme data and knowledge. It can promote the intelligent development of the overall design of solid rocket motors. At present, the common methods of reusing heterogeneous solid engine design schemes are as follows: First, relying on artificial experience to improve existing cases and design relevant parameters of the engine. This type of method is most widely used in industrial production, because the production department has been engaged in eng...

AI Technical Summary

Problems solved by technology

This kind of method designs the engine directly according to the design requirements and design principles, does not rely on existing data and knowledge, and lacks the reuse of data, resulting in a waste of resources on existing knowledge

However, in the process of realizing the present invention, the inventors found that in the above-mentioned traditional method for reusing the design scheme of heterogeneous solid rocket motors, there is a technical problem of low design efficiency

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