Both Ramjet and Scramjet technologies are pushing the boundaries of hypersonic flight, though there is a slight difference between each method of propulsion.

Both Ramjet and Scramjet technologies are pushing the boundaries of hypersonic flight, though there is a slight difference between each method of propulsion.

NASA broke a long-standing speed record in 2004 with the X43A 'scramjet,' soaring past the likes of the SR-71 Blackbird at over three times its top speed.

A team of graduate students at the Purdue Applied Research Institute (PARI) successfully tested a full-scale, 3D printed scramjet, an engine that allows aircraft to travel at speeds of Mach 5 and… ...

Scramjet experiment heads skyward from Australian launch site. (Image credit: Chris Stacey, The University of Queensland) Things are going up down in Australia, and reaching hypersonic speed.

An experimental aircraft has set a new record for the longest hypersonic flight after streaking across the sky Wednesday for more than three minutes while flying at Mach 5 — five times the speed ...

The system calls for a two-mile- long rail gun that will launch a scramjet, which will then fly to 200,000 feet. The scramjet will then fire a payload into orbit and return to Earth.