Simulation research on aerodynamic and ballistic characteristics of aerial bombs

DOI:	10.11809/bqzbgcxb2024.07.016
Keywords:	aerial bomb; aerodynamic layout; ballistics characteristic; numerical simulation
Abstract:	In order to study the effect of aerodynamic layouts on ballistic characteristics of aerial bombs, models with different aerodynamic layouts of aerial bombs are designed. The flight flow field at subsonic, transonic and supersonic speeds has been simulated by ANSYS FLUENT, and main aerodynamic characteristics are obtained. The mathematical model of mass center motion in rectangular coordinate system based on horizontal bombing is established, and the ballistic characteristics and trajectory simulation of aerial bomb models are analyzed by using aerodynamic parameters obtained. Result shows that the reasonable optimization of aerodynamic layout can effectively reduce bomb’s flight resistance and improve its ballistic characteristics, and can provide a range of 800.4~3 212.8 m. Ballistic coefficient, standard falling time and limiting velocity can be used to characterize ballistic characteristics, but the trajectory is affected by many factors, among which there is a best matching interval between bombing velocity and range. Research results can provide theoretical basis and technical support for aerodynamic layout optimization design and engineering application of aerial bombs.
Published:	2024-07-26
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