from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective of a speed, aviation
equalto, or greaterthan, or capable of achieving, ten times the speed of sound.
- adjective of a speed, aeronautics far enough above the speed of
soundso as to cause ionizationof the air through shock heating deriving from the sonic shockwave, with resultant radio blackout, and plasmasheath surrounding the object travelling at speed
from Wiktionary, Creative Commons Attribution/Share-Alike License
But as new higher-speed concepts in what he calls the "plasmasonic" Mach 10 realm begin to appear, the phenomenon is attracting more attention.
Ideas include designing the configuration of the craft so as to minimize the resulting plasmasonic sheath; building an