关键词: 兵器科学与技术, 弹丸, 气动参数, 结构误差, 密集度

Abstract: The test method of the intensity of projectiles in batches is an important measure of assessing the quality level of projectiles. In order to seek a new test method, the influences of the structural errors of projectiles on the aerodynamic parameters are analyzed using a fast simulation calculation method based on the technology, combing the computational fluid dynamics (CFD) software and the empirical formula for calculating the aerodynamic parameters of projectiles. The database of aerodynamic parameters of projectiles is established. A simulation software based on the six degree-of-freedom model and the Visual Basic is programmed and validated for calculating the intensity of projectiles in batches. The order of influences of the mass, diameter, mass eccentricity, dynamic unbalance, initial swing angle, initial swing angular velocity and muzzle velocity on the intensity is achieved by analyzing the correlation between random factor and intensity. The process and application of the test method are proposed. The research results show that the proposed test method is available for the assessment of the quality level of projectiles in batches. Key

Key words: ordnancescienceandtechnology, projectile, aerodynamicparameter, structureerror, intensity