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介绍了大口径机枪双头弹空气阻力系数的 2种实验方法和实验结果。采用模型风洞测试和实弹射击的方法获得了大口径机枪双头弹弹头飞行的空气阻力系数 ,对 2种方法所得的阻力系数进行了比较分析。分析结果表明 ,2种方法所得结果基本接近 ,双头弹前弹头所测得的阻力系数跟风洞测试攻角为 0°时的测试结果接近 ,后弹头的阻力系数与风洞测试攻角为 4°时的结果相近 ,说明前弹头对后弹头具有一定的空气干扰 ,实弹射击更能体现各种综合因素对弹头飞行的影响
Two kinds of experimental methods and experimental results of air resistance coefficient of large caliber machine gun double-headed projectile are introduced. The air resistance coefficient of large-caliber machine gun dual-head projectile flight was obtained by the model wind tunnel test and live-fire method. The resistance coefficients obtained by the two methods were compared. The analysis results show that the results obtained by the two methods are basically similar. The drag coefficient measured by the two-head projectile projectile is close to the test result when the attack angle is 0 ° by the wind tunnel. The drag coefficient of the projectile and the attack angle of the wind tunnel are 4 ° results are similar, indicating that the front warhead on the rear warhead has a certain air interference, live fire better reflect the impact of various factors on the warhead flight