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Design and optimization of variable thrust hybrid rocket motors for sounding rockets 被引量:9

Design and optimization of variable thrust hybrid rocket motors for sounding rockets
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摘要 Besides safety and low-cost,the start/shutdown/restarting and throttling ability are the other two significant advantages of hy-brid rocket motors(HRMs) compared with liquid and solid ones.In this study,a two-stage variable thrust and non-toxic 98%HP/HTPB hybrid rocket motor(VTHRM) is designed and applied in a sounding rocket,and the design parameters of the motor are analyzed and optimized.A computational program is developed to design the motor system structure,to predict the interior ballistics and the ballistic trajectory.A star grain and a wheel grain are compared.The design of experiment(DOE),variance analysis and the main effect analysis are employed to investigate the influence of the main design parameters on mo-tor performance.The multidiscipline feasible(MDF) approach is applied to establish the optimization procedure after analyz-ing the system design structure matrix.A modified differential evolution algorithm is employed to maximize the load mass.The results indicate that the wheel grain could obtain a larger load mass and a lower length to diameter ratio,and that throttling markedly meliorates the motor and rocket performance.The conclusions drawn from the analysis and optimization could pro-vide instructive guide and theoretical basis for engineering designs.
机构地区 School of Astronautics
出处 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第1期125-135,共11页 中国科学(技术科学英文版)
关键词 sounding rocket hybrid rocket motor variable thrust motor design of experiment optimization design 发出声音的火箭;混合火箭马达;可变的戳马达;实验的设计;优化设计
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参考文献13

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二级参考文献16

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