Boeing X-51 WaveRider Hypersonic Scramjet

Boeing X-51

The Boeing X-51 is an unmanned scramjet demonstration aircraft for hypersonic (Mach 7, around 8,050 km/h) flight testing. The X-51 WaveRider program is a consortium of the US Air Force, DARPA, NASA, Boeing and Pratt & Whitney Rocketdyne. The program is managed by the Propulsion Directorate within the United States Air Force Research Laboratory (AFRL).[1] The X-51 has flown on a B-52 and is expected to have its first non-captive flight as early as May 25, 2010.[2]

The X-51 WaveRider team is focused on developing a free-flying vehicle that will fly longer hypersonically than all of it predecessors combined. Hypersonic speeds are those in excess of Mach 5 (five times the speed of sound).

The Boeing X-51 team purposely developed the vehicle to package a specific engine type into a soon-to-be-demonstrated platform. When this jet-fueled, air breathing hypersonic vehicle flies in late 2009 and early 2010, it will demonstrate a reliable system capable of operating continuously on jet fuel and accelerating through multiple Mach numbers
Collected from: Boeing: X-51 WaveRider

Air Force's Hypersonic X-51 WaveRider Ready For First Test Flight

X-51 WaveRider The X-51A WaveRider, a wingless scramjet, will make its first hypersonic test flight Tuesday over the Pacific Ocean. Air Force Research Laboratory

The X-51A WaveRider, which sort of resembles a shark, will fly for about five minutes, powered by a scramjet engine. It should reach about Mach 6 and transmit data to ground stations before splashing down in the Pacific Ocean, according to the Air Force Research Laboratory.
The longest previous hypersonic scramjet flight test, performed by a NASA X-43 in 2004, was faster, but lasted only about 10 seconds and used hydrogen fuel. The X-51 uses JP-7 jet fuel, the same juice that powered the SR-71 Blackbird.

X-51A WaveRider hypersonic scramjet testbed

Boeing X-51 - Wikipedia, the free encyclopedia
Boeing: X-51 WaveRider
Air Force's Hypersonic X-51 WaveRider Ready For First Test Flight | Popular Science
YouTube - X-51A WaveRider hypersonic scramjet testbed

Air Force’s Mach 6 Cruise Missile Ready to Race | Danger Room | Wired.com
YouTube - Boeing X-51 WaveRider Scramjet Engine Demonstrator
Hypersonic Plane Update on the X-51 Waverider and Falcon Scramjet
Spaceflight Now | Breaking News | X-51 scramjet flights poised to bridge air and space propulsion for space launch, Prompt Global Strike