Solid rocket engine rapid design method considering performance and cost

Abstract

The invention relates to a solid rocket engine rapid design method considering the performance and the cost, and belongs to the field of solid rocket engine application. The method comprises the following steps that a coupling relationship between the performance and the cost of a solid rocket engine is comprehensively considered, and a solid rocket engine key subject analysis model and a multidisciplinary design optimization problem model are established; a multi-target adaptive optimization strategy based on Kriging is adopted, the maximum total impulse and the minimum cost of the solid rocket engine are used as target functions, and pre-selected design variables are optimized. In the optimization process, an original analysis model is replaced with a KRG agent model, a pseudo Pareto solution set of the current KRG agent model is obtained through NSGA-II solving, the KRG agent model is updated and managed in the solution set based on crowding degree sorting sampling, thus optimization is guided to be rapidly converged to a real Pareto leading edge, the internal excavation potential of the solid rocket engine performance and cost is fully explored, the engine development cost is reduced, and the design performance is improved.

Description

technical field [0001] The invention relates to a fast design method of a solid rocket motor in consideration of performance and cost, belonging to the application field of the solid rocket motor. Background technique [0002] Solid rocket motors are widely used in various missiles, spacecraft and launch vehicles because of their simple structure, long-term storage of propellants, high reliability, and easy operation and maintenance. In addition, with the maturity of space delivery technology and the surge of commercial demand, it is particularly important to reduce the cost of space transportation to improve the competitiveness of models in the space field. In order to reduce the cost of solid rocket motor development, domestic researchers have carried out certain technical research work in the field of solid rocket motor performance and cost design (Li Xiaobin, Xie Hongyu, Qinglong, Zhang Weihua, Chen Yaqin, Sun Bing. Performance / cost optimization of high-pressure solid ro...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low-cost and economical demand for large-scale transportation systems in the field of commercial aerospace, and to provide a rapid design method for solid rocket motors that considers performance and cost; Under the condition of improving the total stroke of the engine as much as possible while reducing its development cost

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