A progressive matching design method for solid rocket motor performance

Abstract

The invention provides a progressive matching design method for the performance of solid rocket motors, which includes: obtaining the mission target of the overall index of the solid rocket motor; According to the initial training sample set, run the combustion surface and internal ballistic calculation model in the initial time interval to obtain N thrust curves, and build a thrust approximate model according to the N thrust curves ; Perform inaccurate sampling to obtain an alternative solution; substitute the alternative solution into the combustion surface calculation and internal ballistic calculation model, calculate the internal ballistic performance within the simulation time, and obtain an alternative thrust curve; when the simulation time is not less than the described work time, the alternative solution is added to the sample set as a new sample point to obtain an updated sample set; when the preset convergence condition is reached, the alternative thrust curve is output as the optimal solution.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a design method for progressive matching of solid rocket motor performance. Background technique [0002] Solid rocket motor is one of the important power systems of space vehicles such as missiles and rockets. In the design of solid rocket motors, the thrust-time curve is the most direct performance output of the motor, and it is also the most concerned motor performance of the missile as a whole. With the continuous improvement of the refined design level of missiles, the demand for engines with specific thrust curves is more urgent. Therefore, the performance matching design for solid rocket motors can better meet the overall refined design requirements of missiles and improve the overall performance of missile weapons. Different from the existing design requirements for performance indicators, engine performance matching design is to find a set of design schemes in the d...

AI Technical Summary

Problems solved by technology

[0004] However, the current commonly used engine matching design method has the disadvantage that the fitness evaluation must be performed after the simulation is completed in each iteration process, resulting in repeated calculations of poor solutions, resulting in increased calculation time and low efficiency.

Images