But the dream of jetting from New York to Tokyo in under three hours hasn’t been abandoned. Among travelers, especially the wealthy, there’s still demand for shorter flight times, especially since air travel has become so unpleasant in recent years. And there’s a young but growing market to meet that demand. More than a few private aerospace companies hope to cash in on the (really) high speed jet travel market. And NASA’s in on the game, too.
There’s no great secret to supersonic flight: It’s about adding power until the aircraft can break the sound barrier. That power has always come from conventional fuel, and lots of it. With the clock ticking on fossil fuels, future aircraft will need to use less fuel or rely on renewable energy sources.