An X-51A Waverider flight-test vehicle successfully made the longest supersonic combustion ramjet-powered hypersonic flight May 26 off the southern California Pacific coast. An X-51A Waverider ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The first hypersonic X-51scramjet powered long-duration flights to give the Pentagon a new ...

An experimental aircraft has set a new record for thelongest hypersonic flight after streaking across the sky Wednesday for morethan three minutes while flying at Mach 5 ? five times the speed of ...

A lightning-quick experimental aircraft made history when it sped more than 3,000 mph above the Pacific Ocean in a test flight, reigniting decades-long efforts to develop a vehicle that could travel ...