NASA’s X-43A was a small, unmanned experimental aircraft that, in 2004, shattered world records by flying at nearly Mach 10 (almost 7,000 mph), becoming the fastest air-breathing vehicle in history.

NASA flew the autonomous X-43 test vehicle to hypersonic speed two times in 2004, and the Air Force demonstrated an air-breathing scramjet engine at Mach 5.1 with the X-51 Waverider aircraft in 2013.

Commercial hypersonic flight may face competition from two emerging technologies: reusable rockets and single-stage-to-orbit spaceplanes.

The X-24C: Hypersonic Aircraft of the 1970s Here’s What You Need to Remember: Had the X-24C been successful in testing, America would likely have leveraged scramjet technology in more platforms.

NASA's X-43A hypersonic demonstrator is gearing up for its second Mach 7 flight attempt next month, the outcome of which may determine whether the program will make a third flight attempt at Mach 10.

Established in 2011, the 362-employee company based in Mojave, California, has built the first hypersonic aircraft to land since the X-15 was shuttered in 1968.

What You Need to Know: The Lockheed L-301, also known as the X-24C, was an ambitious experimental hypersonic aircraft project in the 1970s that aimed to build upon the advancements of the X-15 and ...

The X-15 hypersonic aircraft were air-launched from a B-52 aircraft, and flew a total of 199 times over the span of 10 years. The program ended in the late 1960s due to a lack of funding and a ...

The U.S. hasn’t had a recoverable hypersonic aircraft since the X-15, which stopped flying in the late 1960s — and it’s never had one that’s fully autonomous.

Stratolaunch's beautiful Talon-A2 reusable hypersonic aircraft (Image credit: Stratolaunch) "With the data collected from this second flight, we are able to apply lessons learned to enhance the ...