[primemod3]

More impressive to me is the X-15, which flew faster than the aircraft in this video, had a pilot, and flew in the 1960s. http://en.wikipedia.org/wiki/North_American_X-15#Fastest_fli...

[retube]

that was a rocket engine though. this is air-breathing.

[anamax]

How many other HN readers built a model X-15?