Experimental Studies on Air Drag Coefficient of Spherical Tungsten Fragments

The air drag coefficients of spherical tungsten fragments are studied. The fragment includes ideal sphere and real fragment formed by a warhead. The experimental results show that: (1) for ideal spheres, the attenuation coefficient of velocity is constant, the air drag coefficient is slightly affected by the initial velocity and is a linear function of initial velocity, and (2) for real fragments formed by a warhead, the flight performances are different from ideal spheres, the air drag coefficient is affected by the flight velocity and is a linear function of flight velocity.