Supersonic combustion is used to propel hypersonic scramjets, which travel at speeds over Mach 5. These engines are fundamentally different from traditional jet engines. They feature a more efficient, ...

The world's first hydrogen-fueled hypersonic jet may be able to reach a simply astounding speed of 12 times the speed of ...

Embed <iframe src="https://www.npr.org/player/embed/1829839/1829840" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player"> NPR's ...