【摘要】 随着空降空投技术的进一步发展，对超声速环境下的开伞研究十分有必要。基于ALE方法对带前体的盘缝带伞超声速开伞过程进行了数值仿真，将数值仿真得到的开伞动载和稳降速度与空投试验进行了对比，验证了仿真的可靠性。通过对比不同马赫数下的开伞过程，探讨了开伞速度对伞衣外形变化、阻力系数和稳定性的影响。仿真结果表明：在超声速开伞环境下，带前体的盘缝带伞伞衣会受到前体尾流的影响，导致伞衣在开伞过程中出现较大晃动，无法保持稳定的饱满状态，且随着开伞速度增加，伞衣最大摆角逐渐减小；随着开伞速度的增加，稳降阶段的阻力系数会随之减小；此外，带前体的盘缝带伞稳降的阻力系数相比不带前体的有显著下降，在设计盘缝带伞时需要慎重考虑。更多还原

【Abstract】 With the further development of air assault and airdrop technology, it is essential to study the opening performance of parachutes in supersonic environments.This paper conducts numerical simulations of the supersonic opening process of a disk-gap-band parachute with a forebody based on the ALE method.The dynamic opening load and steady descent velocity obtained from the numerical simulations are compared with airdrop test results to verify the reliability of the simulations.Then, by simulating the opening process at different Mach numbers, the effect of opening speed on the parachute canopy shape, drag coefficient, and stability is explored.The simulation results show that in a supersonic environment, the canopy of the disk-gap-band parachute with a forebody is affected by the wake of the forebody, causing significant oscillations during the opening process and preventing the canopy from maintaining a stable, fully inflated state.Moreover, as the opening speed increases, the maximum oscillation angle of the canopy gradually decreases.The drag coefficient during the steady descent phase decreases with the increase in opening speed.Additionally, the drag coefficient for steady descent of the disk-gap-band parachute with a forebody is significantly lower compared to the one without a forebody, which should be carefully considered when designing disk-gap-band parachutes.更多还原