Research on the multi attitude inertial ignition performance of aerial bomb fuze

DOI:	10.11809/bqzbgcxb2024.11.010
Keywords:	ignition mechanism; dynamic model; impact; soil; aerial bomb; numerical simulation
Abstract:	The fuze firing mechanism plays a decisive role in determining whether the firing mechanism of aerial bomb can normally detonate under different landing conditions.In order to optimize the mechanical structure of the fuze, a dynamic model of the inertial ignition mechanism of the aerial bomb fuze impacting soil at different angles and speeds was established.The dynamic model of inertial firing mechanism of aerial bomb fuze is verified by dynamic simulation using finite element analysis software.The process of projectile impacting the ground is numerically simulated to verify the accuracy of the empirical formula.The simulation results show that the calculation results of the dynamic model are consistent with the simulation results.However, there is a certain error between the acceleration calculated by the empirical formula and the simulation.Subsequently, the calculation method of soil impact acceleration is improved, so that the error between the calculation result and the simulation result is significantly reduced.The maximum error is reduced from 46.88% to 9.9% respectively.This study provides a reference for the design optimization and performance evaluation of inertial ignition mechanism.
Issue:	Vol. 45 No. 11 (2024)
Published:	2024-11-30
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