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 March 30, 2015

News: Pentagon chief mulls easing military enlistment standards - Defense Secretary Ash Carter is considering easing some military enlistment standards as part of a broader set of initiatives to better attract and keep quality service members and civilians across the Defense Department.   Business: Lockheed pays $2 million to settle government overbilling charges - Lockheed Martin Corpor...
 
 

News Briefs March 30, 2015

Landing mishap for military chopper; two aboard unhurt Two Navy officers were unhurt after their helicopter rolled on its side while landing in the Florida Panhandle. The mishap happened the night of March 27 at a Navy landing site in Pensacola, Fla. The Pensacola News Journal reports a pilot instructor and a student were able...
 
 
Air Force photograph by TSgt. Matt Hecht

Laser-based aircraft countermeasure provides ‘unlimited rounds’ against MANPADS

Air Force photograph by TSgt. Matt Hecht A U.S. Army AH-64 Apache attack helicopter prepares to depart Bagram Air Field, Afghanistan, on Jan 7, 2012. The Apache conducts distributed operations, precision strikes against relocat...
 

 

Navy, Air Force advocate for modernizing combat aviation

Top Navy and Air Force officials today told the House Armed Services subcommittee on tactical air and land forces the president’s budget request for fiscal year 2016 will support modernizing combat aviation programs. Cavy Vice Adm. Paul A. Grosklags, principal military deputy to the assistant secretary of the Navy for research, development and acquisitions; Air...
 
 

Raytheon wins $46 million contract for South Korean Global Hawk ground stations

Raytheon has been awarded a contract valued at up to $45.7 million by Northrop Grumman Aerospace Systems for ground segments in support of four Global Hawk unmanned aircraft systems recently purchased by the Republic of Korea. Under this contract, Raytheon will deliver one building-based and one mobile ground segment to locations in South Korea. Work...
 
 
Air Force photograph by SrA. Victor J. Caputo

McConnell community marks B-29 rollout

Air Force photograph by SrA. Victor J. Caputo A B-29 Superfortress aircraft, named Doc after its nose art, sit on the flightline March 23, 2015, in Wichita, Kan. Doc will be one of two Superfortresses in the world capable of fl...
 




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=""> <strike> <strong>