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- W4283207007 abstract "Solid propellant grain is a crucial part in the solid propellant rocket motor (SPRM) as grain design defines the motor performance. The SPRM's manufacturing process is carefully checked to guarantee that no flaws are introduced. However, mandrel misalignment and ovality of the core and/or grain bore due to machining or thermal shrinkage during curing are defects that might develop; these flaws could affect overall motor performance. In order to study the impact of these flaws, a parametric study is performed using a single parameter change at a time. In addition, a Monte Carlo simulation is utilized to generate a set of cases that represent the random nature of these flaws. The level set method is implemented to evaluate the burnback of each generated case. A procedure is proposed to predict the allowable tolerance of ovality and misalignment flaws to maintain certain thrust envelope. It is found that the misalignment and ovality have a significant impact on the tail-off phase only, with the effect of misalignment being significantly greater than that of ovality. However, there is a synergetic effect when all factors namely, misalignment, ovality, and angular orientation are combined." @default.
- W4283207007 created "2022-06-22" @default.
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- W4283207007 date "2022-06-20" @default.
- W4283207007 modified "2023-10-14" @default.
- W4283207007 title "Investigation of Production Tolerances in Solid Propellant Tubular Grains" @default.
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- W4283207007 doi "https://doi.org/10.2514/6.2022-3427" @default.
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