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.


 
 

 
NASA photograph by David Alexander

NASA MQ-9 remotely piloted aircraft completes visual, radar mission in Hawaii

NASA photograph “Ikhana,” NASA’s MQ-9 remotely piloted research aircraft, carries a maritime radar in a specialized centerline pod during a flight to check out systems prior to the aircraft’s deployment ...
 
 
NASA photograph by Tom Tschida

NASA Armstrong’s space shuttle Mate-Demate Device coming down

NASA photograph by Tom Tschida The space shuttle Mate-Demate Device that stood as an iconic symbol of NASA’s now-concluded Space Shuttle Program at NASA Armstrong Flight Research Center for 38 years is being dismantled af...
 
 

NASA awards research facilities, engineering support services contract

NASA has awarded a contract for research facilities and engineering support services to InuTeq, LLC of Greenbelt, Maryland, in support of the Mission Information and Test Systems Directorate at NASA’s Armstrong Flight Research Center, Edwards, Calif. This cost-plus-award-fee contract covers a one-year base period beginning Nov. 1, 2014 and four one-year options, and is valued...
 

 

NASA picks top Earth data challenge ideas, opens call for climate apps

NASA has selected four ideas from the public for innovative uses of climate projections and Earth-observing satellite data. The agency also has announced a follow-on challenge with awards of $50,000 to build climate applications based on OpenNEX data on the Amazon cloud computing platform. Both challenges use the Open NASA Earth Exchange, or OpenNEX, a...
 
 
nasa-flying-lab

NASA’s flying laboratories study our world

Throughout the remainder of 2014, NASA is flying a series of airborne research campaigns from the North Pole to the South Pole and many points in between ñ to take a closer look at U.S. air quality, hurricanes in the Atlantic ...
 
 

NASA selects proposals to increase STEM education at community, technical colleges

NASA’s Office of Education will award more than $17.3 million through the National Space Grant and Fellowship Program to increase student and faculty engagement in science, technology, engineering and mathematics at community colleges and technical schools across the United States. Each award has a two-year performance period and a maximum value of $500,000. The 35...
 




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>