IT WAS ARGUABLY THE MOST IMPORTANT flight since Kitty Hawk, and the plane was a perfection of form and function. Thirty feet 9 inches long, 10 feet 8½ inches high and 28 feet from wingtip to straight-razor wingtip, the Bell X-1 looked exactly like what had inspired its designers: a .50 caliber bullet. Square-jawed, slender and handsome, with a reassuringly laconic West Virginia drawl, U.S. Air Force Capt. Chuck Yeager sat in the cockpit as the ur-pilot, the epitome of the Right Stuff. On this bright, brisk morning near Rogers Dry Lake in Southern California, October 14, 1947, he was preparing to fly faster than the speed of sound for the first time in recorded history.
Yeager, a 24-year-old ace fighter pilot turned path-breaking test pilot, was operating the most sophisticated…