关键词: 液体火箭发动机, 试验台, 螺纹拧紧, 力矩量化

Abstract: In order to improve the reliability of liquid rocket engine test-bed, a quantitative control method of screw tightening moments is proposed. Based on the statistics and analysis of moment values in non-test and test environment, the tightening torque range is determined and the rationality of the range is verified by the theoretical calculation of tightening moment strength. Combining with the specific characteristics of the space position of the test bench, the method and process of torque quantitative control for different space positions are determined and have been applied in actual test. The results show that the method proposed can effectively improve the reliability of engine test process.