Analysis of Ablative Performance of C/C Composite Throat Containing Defects Based on X-ray 3D Reconstruction in a Solid Rocket Motor

作者：Hui, Wei-Hua^*; Bao, Fu-Ting; Wei, Xiang-Geng; Liu, Yang

来源：INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES, 2015, 32(4): 351-359.

DOI：10.1515/tjj-2015-0021

• solid rocket motor
• carbon/carbon composites
• ablation property
• X-ray

In this paper, a new measuringmethod of ablation rate was proposed based on X-ray three-dimensional (3D) reconstruction. The ablation of 4-direction carbon/carbon composite nozzles was investigated in the combustion environment of a solid rocket motor, and the macroscopic ablation and linear recession rate were studied through the X-ray 3D reconstruction method. The results showed that the maximum relative error of the X-ray 3D reconstruction was 0.0576%, which met the minimum accuracy of the ablation analysis; along the nozzle axial direction, from convergence segment, throat to expansion segment, the ablation gradually weakened; in terms of defect ablation, the middle ablation was weak, while the ablation in both sides was more serious. In a word, the proposed reconstruction method based on X-ray about C/C nozzle ablation can construct a clear model of ablative nozzle which characterizes the details about micro-cracks, deposition, pores and surface to analyze ablation, so that this method can create the ablation curve in any surface clearly.

• 出版日期2015-12
• 单位西北工业大学