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