CLEVELAND, Ohio — Launch of the next hypersonic flight experiment under a U.S.-Australian joint program has been scheduled for May 1, from Kauai, Hawaii, carrying a supersonic-combustion ramjet ...

An aircraft running on hydrogen that races through the upper atmosphere at speeds exceeding twelve times the speed of sound might seem like a fantasy reserved exclusively for science fiction. That, ...

Just a couple of decades ago, aviation had some rules. If you wanted to fly fast within the atmosphere, you used a jet engine. The champion here was the SR-71 Blackbird, designed by Lockheed Martin, ...

The Indian government says its efforts to develop a homegrown air-breathing hypersonic missile have advanced with a recent ground test. The government’s Defense Research & Development Laboratory ...