论文部分内容阅读
药柱结构的完整性通常以实验室方皮试样的力学性能数据来评价。过去数年中,为了验证药柱结构能力,航空喷气公司进行了大量的试样切割和发动机解剖试验。从这些试验清楚地看出,标准方皮试样数据与实际推进剂药柱的整体和局部性能数据以及包复层/绝热层等其它材料性能数据相比,常常是不完整或是有差错的。为什么会得到不一致的结果,还不能圆满地解释。但很明显,发动机的工艺方法和总装后发动机的材料相互作用是出现差异的重要因素。本文提供了对发动机研究的实例,验证了把推进剂药柱的试验鉴定作为整体结构评价关键因素的重要意义。
The integrity of the column structure is usually evaluated on the mechanical properties of the laboratory peel samples. In the past few years, Air Jet Company conducted a large number of specimen cutting and engine dissection tests in order to verify the ability of column structure. From these experiments, it is clear that the standard square skin specimen data is often incomplete or faulty compared to the overall and local performance data of the actual propellant grains and other material properties such as cladding / thermal insulation . Why you can get inconsistent results, can not be satisfactorily explained. However, it is clear that the engine process and the engine assembly material after the assembly is an important factor in differences. This article provides an example of an engine study demonstrating the importance of experimental identification of propellant grains as a key factor in overall structural evaluation.