1. This order of magnitude result is obtained by replacing the kinematic viscosity in the classical formula for boundary-layer thickness by the product of mean free path times mean molecular speed, as given by the elementary kinetic theory.
2. This approximate equation expresses the fact that the flux of fluid through the boundary layer (nuδ) times the loss of thermal energy per particle (kT) must equal the total heat flux (Qthd) to the cylinder.
3. Ionization in Seeded Detonation Waves
4. J. C. Cutting, J. A. Fay, W. T. Hogan, and W. C. Moffatt, AFOSR TR-59-78, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge (1959).
5. J. C. Cutting, J. A. Fay, W. T. Hogan, and W. C. Moffatt,Physical Chemistry in Aerodynamics and Space Flight(Pergamon Press, Oxford, 1961), p. 53.