Abstract: The technology of substituting full charge loading with non-full charge loading is researched to decrease the ammunition consumption in the barrel life test of revolving barrel cannon. The computing equations of muzzle vibration displacement are established. High-order Fourier series is used to fit the resultant force in bore, and then the frequency equations of resultant force are established. The modal parameters of cannon are obtained by model measuring and analysis, and a frequency response equation of the cannon elevating part is established. The frequency response equation is used to calculate the muzzle vibration displacements in the way of non-full charge loading and full charge loading. The differences among these muzzle vibration displacements are compared. Based on the law that the muzzle vibration displacements of non-full charge loading and full charge loading are consistent, the barrel life test scheme is confirmed. In verification experiment, the barrel life’s consistency is proved. The barrel life test method of less amount ammunition is designed to decrease the ammunition consumption in test. Key

Key words: ordnancescienceandtechnology, cannon, barrellife, testtechnology