free-stream Mach number

free-stream Mach number

[′frē ‚strēm ′mäk ‚nəm·bər]
(aerospace engineering)
The Mach number of the total airframe (entire aircraft) as contrasted with the local Mach number of a section of the airframe.

free-stream Mach number (MFs)

free-stream Mach number (MFs)
The Mach number of a body measured in free stream, which is unaccelerated by the airfoil or the body's presence.