An unmanned flight above the Pacific Ocean may eventually influence the way all humans fly. From W.J. Hennigan in the Los Angeles Times:

“Since test pilot Chuck Yeager broke the sound barrier in 1947, engineers and scientists have dreamed of ever-faster aircraft. Now, they face one of their toughest challenges yet: sustaining hypersonic flight — going five times the speed of sound or more — for more than a few minutes.

In a nondescript hangar at Edwards Air Force Base in the Mojave Desert, a team of aerospace engineers has been putting the finishing touches on a lightning-quick experimental aircraft designed to fly above the Pacific Ocean at 3,600 mph. A passenger aircraft traveling at that speed could fly from Los Angeles to New York in 46 minutes.

On Tuesday a key test is set for the unmanned experimental aircraft X-51A WaveRider.”