液体火箭发动机内窥镜检测方法改进

为进一步提高内窥镜在液体火箭发动机的工作内腔、焊缝表面、导管内表面的缺陷及多余物检测效果，采用定性与定量方法对缺陷进行了试验研究。内窥镜检测到的缺陷图像转变为数字图像后，可实现对缺陷尺寸实际大小的判别。该研究方法对其它产品的内部质量状况检测也有一定的参考价值。

Improvement of Endoscope Inspection in Liquid Rocket Engine

Endoscope is applied to the inspection of the cavity,welding defects,tube inner surface defects and contamination within the inner structure of liquid rocket engines. To get a more effective result,the defects are studied qualitatively and quantitatively.Real size of the defects can be identified through transferring the defect images into digital ones. The method is also valuable to internal quality inspection of other products.