05-27-2010, 06:54 PM
According to...
http://en.wikipedia.org/wiki/Scramjet
...scramjet motors don't even begin to function until about MACH 4.5.
- conventional jet: MACH 3.4
- ramjet: MACH 5
- scramjet: MACH 12 to 24
http://en.wikipedia.org/wiki/Scramjet
...scramjet motors don't even begin to function until about MACH 4.5.
- conventional jet: MACH 3.4
- ramjet: MACH 5
- scramjet: MACH 12 to 24