But with a hypersonic missile, such as the one being tested on the X-51, “the attack would have been cut to just over 12 minutes,” Richard Hallion, a former Air Force senior advisor, said last ...

Like a conventional jet engine, the SJY61 is capable of adjusting thrust throughout the X-51’s flight envelope. Hypersonic flight, normally defined as beginning at Mach 5, five times speed of sound, ...

The Pentagon plans on using the successful 2013 test of its X-51 Waverider hypersonic scramjet to build a more traditional aircraft that can operate at the same speed. The U.S. Air Force and the ...

In May of 2013, the Air Force successfully tested the X-51 WaveRider — an uncrewed, hypersonic “scramjet” capable of reaching Mach 5.1, or more than five times the speed of sound — by ...

X-51 Waverider makes historic ramjet-powered hypersonic flight. ScienceDaily . Retrieved May 28, 2025 from www.sciencedaily.com / releases / 2010 / 05 / 100527130438.htm ...

The Air Force described the X-51 is an unmanned scramjet demonstration aircraft for hypersonic (Mach 6, or approximately. 4,000 mph at altitude) flight testing.

Pratt & WhitneyRocketdyne built the SJY61 scramjet engine at the heart of the X-51A cruiser. The Air Force beganWednesday's test at 1 p.m. EDT (1700 GMT), when the B-52Stratofortress hauling the X ...

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.

Air Force's Hypersonic X-51A jet fails latest test flight, is lost over the Pacific By Fox News Published August 15, 2012 2:29pm EDT | Updated January 8, 2015 3:22pm EST ...

The X-51A Waverider uses a special scramjet engine to propel it to five times the speed of sound—that’s hypersonic speed, or more than 3500 miles per hour. Scramjet stands for supersonic ...

The maiden flight of the X-51 Waverider aircraft — the first U.S. hypersonic vehicle to fly in six years — is scheduled to take place later in March.