【摘要】 为降低某30 mm航炮连续射击时的身管振动和对飞行器的冲击，提出对武器身管产生动力偶和反后坐力、不产生横向力的成对斜喷管振动控制方案。基于两相流理论，建立考虑身管侧向导气的武器内弹道模型，运用TVDMacCormack差分格式进行了数值求解，获得了武器膛内流场和两喷管气动力随时间的变化曲线。进一步对航炮连续射击过程进行动力学仿真，分析了成对斜喷管对炮口振动的影响。结果表明，两斜喷管气动力峰值发生时间相差0.07 ms，且瞬态最大气动力差0.5%，具有较好的同步性；控制装置能在弹丸初速度基本不降低的情况下，使炮口的横向振动线位移和线速度分别减小26.9%和44.3%，炮口振动响应降低较为明显；同时武器后坐冲量减小17.93%，且不对飞行器产生横向力作用，武器对机身的冲击明显降低。该研究可为航炮成对斜喷管身管振动控制装置的设计提供理论依据。更多还原

【Abstract】 A vibration-controlled device with paired inclined nozzles is designed to reduce the barrel vibration and minimize the im-pact on the aircraft during continuous firing. The newly designed paired inclined nozzles generate only dynamic moment and recoil force, without producing transverse force. An interior ballistics model of the barrel with lateral channels is established, and the TVD-MacCormack difference scheme is utilized to numerically calculate the flow field in the barrel and the time-dependent aerodynamic force of the nozzles. Dynamic simulations of the continuous firing process of the aircraft gun are conducted to evaluate the effect of the paired inclined nozzles on the muzzle vibration. Results show that the time difference of the maximum aerodynamic force of the two nozzles is 0.07 ms, with a relative difference of the maximum aerodynamic force of only 0.5%. This indicates that the two nozzles are well synchronized. The paired oblique nozzles can greatly reduce the muzzle vibration without compromising the initial velocity of the projectile. The linear displacement and velocity of the lateral vibration decrease by 26.9% and 44.3%, respectively. The recoil momentum also decreases by 17.93%, without generating transverse force on the aircraft. As a result, the impact on the aircraft is significantly reduced. The achievements of this research will support the design of aircraft gun barrels with paired inclined nozzles.更多还原