WTF is the difference between air speed and true air speed? Mach 6 is about 4,000 – 4,500 mph depending on the altitude. The speed of sound at sea level is about 760 mph, but it decreases with temperature. At 60,000 ft (where this thing will probably fly) the speed of sound in about 660 mph. That would put Mach 6 at 3,960 mph.
Thanks for the review. I was assigned at Edwards 1964-1968 and have forgotten some fundamental constants. I was there when Mike Adams was lost in an X-15. Mike was one of the brightest test pilots I have met.
http://en.wikipedia.org/wiki/True_airspeed
True airspeed is distinct from indicated airspeed.
“WTF is the difference between air speed and true air speed?”
It can be nothing, and it can be a huge amount. Depends on the relative wind and air density. I could be flying at an indicated air speed of 100kts, and not actually be moving forward, therefore, my true airspeed would be zero.
Ever seen or done a tailslide? Fun.