Resistance of Slender Bodies Moving With Supersonic Velocities, With Special Reference to Projectiles

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Abstract
The hydrodynamical equations for the steady flow of a compressible fluid with axial symmetry are applied to the case of a slightly disturbed parallel flow with velocity higher than the velocity of sound. The linear equation obtained in this way is integrated by a numerical method, and the solution applied to an approximate calculation of the pressure distribution at the head of a projectile. The question of the drag of projectiles is discussed and the results of the theoretical calculations compared with the values obtained from ballistic experiments. The numerical calculations have been carried out by the junior author, using the methods suggested by the senior author.

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