关键词: 固体火箭发动机;装药;不确定性优化设计;可靠性;稳健性+

Abstract: The ideas and methods about uncertainty optimization design have been introduced and the uncertainty of the charge geometry parameter due to charge deformation has been taken into account in the process of the charge design.The geometry parameter uncertainty optimization design of finocyl charge for high length to diameter ratio solid booster rocket engine has been accomplished.The optimization problem is solved by hybrid optimization method composed of Powell optimization method and genetic algorithms.The solution efficiency of the optimization problem can been improved by the distributed parallel performance of the genetic algorithms.The mean value and standard deviation of the performance parameter are approximately calculated by first order Taylor series.The probability of constraints success is calculated with reliability index.Compared with deterministic optimization design method,the more reliable and more robust optimization charge design for solid rocket engine has been gained by uncertainty optimization design method.

Key words: Solid rocket engine;Charge;Uncertainty optimization design~+;Reliability;Robust~+