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±3-Sigma based design optimization of 3D Finocyl grain

机译:基于±3-Sigma的3D Finocyl晶粒设计优化

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摘要

A three-sigma (-3 ~ +3) approach is applied in robust design optimization of Finocyl grain geometry. Grain design becomes an exigent task when accounting for uncertainties in manufacturing processes. Upper stage SRM requires tight control on total impulse and acceleration to ensure safe entry of satellites into orbits. A first order Taylor series is used to calculate solution sensitivity and thus moving toward a robust solution. Motor performance is calculated using a simplified ballistic model with throat erosion considerations. Average thrust and propellant mass are the impetus drivers on performance, and so considered as core of grain design process. Therefore, we intend to maximize them with minimizing the variation in both. Monte Carlo simulation reveals that robust solution proves insensitive to manufacturing uncertainties. The approach produced satisfactory results for test case.
机译:三西格玛(-3〜+3)方法用于Finocyl晶粒几何结构的稳健设计优化中。当考虑到制造过程中的不确定性时,晶粒设计成为一项紧迫的任务。上层SRM需要严格控制总脉冲和加速度,以确保卫星安全进入轨道。一阶泰勒级数用于计算解的灵敏度,从而朝着稳健的方向发展。使用简化的弹道模型并考虑到喉咙腐蚀来计算电机性能。平均推力和推进剂质量是性能的推动力,因此被认为是谷物设计过程的核心。因此,我们打算通过最小化两者的差异来最大化它们。蒙特卡洛仿真表明,可靠的解决方案对制造不确定性不敏感。该方法对于测试用例产生了令人满意的结果。

著录项

  • 来源
    《Aerospace science and technology》 |2013年第1期|29-37|共9页
  • 作者单位

    Institute of Space Technology, Islamabad Highway, Near Rawat Toll Plaza, P.O. Box 44000, Islamabad, Pakistan;

    Beihang University (BUM), 37XueYuan Road, Haidian District, Beijing 100191, China;

    Institute of Space Technology, Islamabad Highway, Near Rawat Toll Plaza, P.O. Box 44000, Islamabad, Pakistan;

    Institute of Space Technology, Islamabad Highway, Near Rawat Toll Plaza, P.O. Box 44000, Islamabad, Pakistan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    solid rocket motor; grain design; 3-sigma; robust solution; monte carlo simulation;

    机译:固体火箭发动机谷物设计;3格;强大的解决方案;蒙特卡洛模拟;

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