Mechanical and Aerospace Engineering - 1965 Smetana, F. O. (1965). Results of a research program to develop the aerodynamic configuration of a pitot-static tube capable of accurate operation to mach number 5 and 150,000 ft. Journal of the Royal Aeronautical Society, (March), 200–201. Williams, J. C. I. I. I., & Smetana, F. O. (1965). Theoretical study of a convergentnozzle and free jet flow. Proceedings of the fluid amplification symposium, 5–28. Washington : Army Materiel Command, Harry Diamond Laboratories.