Tech

August 15, 2012

Unmanned US military hypersonic craft failed

staff

An unmanned experimental aircraft failed during an attempt to fly at six times the speed of sound in the latest setback for hypersonic flight.

The X-51A Waverider was designed to reach Mach 6, or 3,600 mph, after being dropped by a B-52 bomber off the Southern California coast Aug. 14. Engineers hoped it would sustain its top speed for five minutes, twice as long as an X-51A has gone before.

But the Air Force said Aug. 15 that a faulty control fin prevented it from starting its exotic scramjet engine and it was lost.

“It is unfortunate that a problem with this subsystem caused a termination before we could light the scramjet engine,” Charlie Brink of the Air Force Research Laboratory at the Wright-Patterson Air Force Base in Ohio, said in a statement.

The Waverider successfully detached from the B-52 and fired the rocket booster as planned. Then its scramjet engine was supposed to take over as it attempted to climb to Mach 6. But that never happened. Fifteen seconds after separating from the rocket booster, the Waverider lost control, preventing a test of the scramjet engine.

“All our data showed we had created the right conditions for engine ignition and we were very hopeful to meet our test objectives,” Brink said.

The Pentagon has been testing hypersonic technologies in hopes of delivering strikes around the globe within minutes.

It was the latest failure for the Waverider program. A test flight last year ended prematurely with an X-15A trying to restart its engine until it plunged into the Pacific Ocean.

During the first flight of an X-51A in 2010, it reached near five times the speed of sound for three minutes.

There’s only one X-51A vehicle left. The Air Force has not decided whether it will fly. AP

 




All of this week's top headlines to your email every Friday.


 
 

 

Headlines August 1, 2015

News: Marine F-35 jets deemed ready for combat – A small batch of the highly anticipated – and much criticized – F-35B Joint Strike Fighter jets have been approved for combat by the U.S. Marine Corps.   News: Reports: China to sell J-10 fighter to Iran, Syria? – Iran is rumored external link to be buying 150...
 
 

News Briefs August 3, 2015

Russian military helicopter crashes during air show, one dead A Russian military helicopter crashed Aug. 2 during an aerobatic display, killing one of its crewmembers and injuring another, the Defense Ministry said. The Mi-28 helicopter gunship was part of a flight of helicopters performing aerobatics at the Dubrovichi firing range in Ryazan region, about 170...
 
 
Army photograph by John Andrew Hamilton

Improved Multiple Launch Rocket System tested at White Sands Missile Range

Army photograph by John Andrew Hamilton A Multiple Launch Rocket System with an improved armored cab fires a training rocket during a test. The rockets were simple training rockets and not equipped with a warhead, but still gen...
 

 

Missile Defense Agency, Raytheon demonstrate SM-6’s new anti-ballistic missile defense capability

In a first-of-its-kind test, the U.S. Navy fired a Raytheon Standard Missile-6, intercepting and destroying a short-range ballistic missile target at sea. The successful U.S. Missile Defense Agency test proved a modified SM-6 can eliminate threat ballistic missiles in their final seconds of flight. “SM-6 is the only missile in the world that can do...
 
 

Northrop Grumman-developed stealthy data link validated as combat ready with U.S. Marine Corps

the U.S. Marine Corps achieving F-35B initial operating capability, the Multifunction Advanced Data Link waveform developed by Northrop Grumman has been proven a key combat-ready capability of the F-35 Lightning II program. MADL is a high-data-rate, directional communications link that allows fifth-generation aircraft to communicate and coordinate tactics covertly. During testing of the Lockhee...
 
 

Lockheed Martin technology helps pilots, UAS operators share data, stay safe

As Unmanned Aircraft Systems take to the skies, it is essential for safety that UAS operators and pilots are aware of each other. To help provide this shared situational awareness, Lockheed Martin has deployed the first components of a UAS traffic management system that is available to the UAS community now. Lockheed Martin’s online Flight...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>