Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Analysis of the influence of the number of sabots on the discarding process of APFSDS
| DOI: | 10.11809/bqzbgcxb2024.05.012 |
| Keywords: | APFSDS; discarding flow field; number of sabots; 6DOF dynamic grid technology; aerodynamic coefficient |
| Abstract: | In order to study the interaction characteristics of the flow field between the sabots and the projectile during the discarding process of armour piercing fin stabilized discarding sabot (APFSDS), this paper uses FLUENT fluid dynamics calculation software and based on the 6DOF dynamic grid technology to establish a numerical simulation model of the three dimensional flow field of the separation of APFSDS, and simulates the discarding process of the sabots under the action of aerodynamic action and gravity, and obtains the separation flow field of the sabot at different moments and the aerodynamic coefficient of the sabot and the aerodynamic coefficient of the sabot and the projectile body with time. The effect of the number of sabots on the discarding process was studied. The results show that in the initial discarding process, the rapid change of the rotating air flow at the front end of the elastic stock will lead to a sudden increase in the resistance of the projectile and a sudden decrease in the resistance of the elastic stock. In the intermediate discarding process, the interaction between the shock wave before the stock and the projectile will lead to the fluctuation and change of the aerodynamic force of the projectile. In the weakly coupled discarding process, the intersection of the sabot shock and the projectile shock at the tail of the projectile will reduce the resistance coefficient of the projectile. With the increase of the number of sabots, the discarding time of sabots decreased, the fluctuation degree of the aerodynamic coefficient of the projectile and the aerodynamic impulse coefficient of the projectile showed a decreasing trend, and the four sabot had the least interference with the projectile body during the discarding process. |
| Issue: | Vol. 45 No. 5 (2024) |
| Published: | 2024-05-31 |
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