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本文提出了一种予测三氧化铝粒子尺寸的新方法,用在空军的改进固体性能程序(SPP)中,将粒子在火箭喷管中生成和破裂的各种理论模型和已有的粒子尺寸的数据作了比较。发现没有一个理论模型对建立粒子尺寸与推进剂组分和发动机参数的关系是合适的。因此,采用线性和非线性最小二乘法的经验方法。试图建立各种参数、分类以及各种理论模型提出的函数形式之间的关系。最后把只有三个自由参数的比较简单的模型推荐用于 SPP。
In this paper, a new method for predicting the size of alumina particles is proposed. In the Air Force’s Improved Solid Performance Program (SPP), various theoretical models for the formation and rupture of particles in a rocket nozzle and the existing particle size The data are compared. No theoretical model was found to be suitable for establishing the relationship between particle size and propellant composition and engine parameters. Therefore, empirical methods using linear and nonlinear least-squares methods. Trying to establish a variety of parameters, classification and the relationship between the various forms of function proposed by the theoretical model. Finally, a simpler model with only three free parameters is recommended for SPP.