As you know, the speed of sound depends on factors such as the temperature and density of the medium through which it travels. Because the temperature and density of air changes at different altitudes ...

We’ve heard blasé dialog about Mach numbers from fighter pilots in movies, but do you know what Mach numbers actually mean? Among other things, it means that two planes going at Mach 1 can actually be ...

When legendary pilot Chuck Yeager broke the sound barrier and flew the Bell X-1 past Mach 1 in 1947, it was the greatest aviation milestone ever achieved at that time. These days, however, reaching ...