一种确定侵蚀函数的新方法

A NEW METHOD TO FORM EROSIVE FUNCTION

关键词:  固体推进剂火箭发动机  侵蚀燃烧  燃烧效应  曲线求律法

Key words:  Solid propellant rocket engine  Erosive burning  Incendiary effect  Curve fitting

摘要:

在已知实验压力曲线的基础上，采用逐点校正技术和最小二乘拟合法确定推进剂的侵蚀函数，可以显著提高侵蚀函数在理论运算中的准确度。拟合得到的侵蚀函数对同类推进剂在不同发动机下，考虑其尺寸效应和燃速效应，具有很强的通用性，这对于减少实验次数及缩比发动机实验研究和相关实验的处理方法等都有重要的实际意义。

Abstract:

It’s usually difficult to determine the accuracy erosive function by testThis paper presents a new method combining the experimental pressure and digital technology to form the erosive function,which the theoretical results fit very wellThe digital method includes the pressure pointwise correcting and the least square fittingThe new erosive function which fits the intra class propellants after the size effect and combustion rate effect are consideredConsequently this new method may play an important role in test study and data processing of SRM