jetcloud

Scramjet nears Mach 10, sets record. 17/11/2004. ABC News Online: "An unmanned experimental jet has broken a world speed record by accelerating to about 11,200 kilometres per hour high over the Pacific Ocean in a NASA test of cutting-edge engine technology.

Officials say the X-43A aircraft, carried aloft by a modified B-52, apparently reached a speed of just under Mach 10 - nearly 10 times the speed of sound - after the jet separated from a booster rocket."