One must keep in mind, however, that the value of the Fanning friction factor can be difficult to determine for supersonic and especially hypersonic flow velocities.
12.
Together with Wallace D . Hayes he wrote a book in 1959 on Hypersonic Flow Theory which remains the principal source of basic information on the subject.
13.
Further research into developing the technique will enable quantitative visualization of fluid flows, in various applications including cryogenic flows, supersonic and hypersonic flows, biomedical device flow visualization etc.
14.
He followed his work in supersonic flow with groundbreaking studies in the late 1940s and early 1950s in hypersonic flow, which is considered to begin at about five times the speed of sound, or Mach 5.
15.
Hypersonic flows are typically categorized by their total energy, expressed as total enthalpy ( MJ / kg ), total pressure ( kPa-MPa ), stagnation pressure ( kPa-MPa ), stagnation temperature ( K ), or flow velocity ( km / s ).
16.
A "'hypersonic wind tunnel "'is designed to generate a hypersonic flow field in the working section, thus simulating the typical flow features of this flow regime-including compression shocks and pronounced boundary layer effects, entropy layer and viscous interaction zones and most importantly high total temperatures of the flow.
17.
The similitude principle was developed by Wallace D . Hayes, a pioneer in hypersonic flow, which is considered to begin at about five times the speed of sound, or Mach 5, and is described in his classic book Hypersonic Flow Theory co-written with Ronald Probstein and first published in 1959.
18.
The similitude principle was developed by Wallace D . Hayes, a pioneer in hypersonic flow, which is considered to begin at about five times the speed of sound, or Mach 5, and is described in his classic book Hypersonic Flow Theory co-written with Ronald Probstein and first published in 1959.
19.
In 1987 he was inducted into the National Academy of Engineering, for pioneering contributions to supersonic aircraft aerodynamics and to fundamental understanding of the physical gas dynamics of hypersonic flow . His important textbook from the first part of his career is, " Introduction to Physical Gas Dynamics " ( 1ed ed 1965, 2nd ed 1975 ).
