Discussion: “Measurement of Recovery Factors and Friction Coefficients for Supersonic Flow of Air in a Tube: Part 1—Apparatus Data and Results Based on a Simple One-Dimensional Flow Model” (Kaye, J., Keenan, J. H., Klingensmith, K. K., Ketchum, G. M., and Toong, T. Y., 1952, ASME J. Appl. Mech., 19, pp. 77–96)