Tech

April 25, 2012

J-2X engine ready for second test series

NASA photograph
NASA Administrator Charles Bolden (right) takes an up-close look at the first development J-2X engine on the A-2 Test Stand at Stennis, where the engine is being prepared for a second round of testing. Pictured with Bolden is A-2 Test Stand Director Skip Roberts. The J-2X engine will provide upper-stage power for NASA's evolved Space Launch System, a new heavy-lift launch vehicle capable of missions to deep space. The J-2X is being developed for NASA by Pratt & Whitney Rocketdyne.

The next-generation engine that will help carry humans deeper into space than ever is back, bigger and better.

The J-2X engine is currently on the A-2 Test Stand at NASA’s Stennis Space Center in Mississippi for an extensive round of tests to build on last year’s successful test firings. The engine will provide upper-stage power for NASA’s evolved Space Launch System, a new heavy-lift rocket capable of missions to deep space.

“We’re making steady and tangible progress on our new heavy-lift rocket that will launch astronauts on journeys to destinations farther in our solar system,” said NASA Administrator Charles Bolden, who recently visited Stennis and saw the J-2X in its test stand. “As we continue test firings of the J-2X engine and a myriad of other work to open the next great chapter of exploration, we’re demonstrating our commitment right now to America’s continued leadership in space.”

The space agency conducted an initial round of sea-level tests on the first developmental engine last year. This second test series will simulate high-altitude conditions where the atmospheric pressure is low. The SLS will use J-2X engines on the second stage of flight after the first stage is jettisoned.

“The first round of testing helped us get to know the engine, how it operates and its basic performance characteristics,” said Tom Byrd, J-2X engine lead in the SLS Liquid Engines Office at NASA’s Marshall Space Flight Center in Huntsville, Ala. “Now, we’re looking forward to testing J-2X in the SLS flight configuration, collecting nozzle data and continuing to learn about the performance of the engine itself.”

NASA has worked closely with the J-2X prime contractor, Pratt and Whitney Rocketdyne of Canoga Park, Calif., to prepare the J-2X engine, dubbed E10001 for its second round of tests.

The J-2X engine nozzle is different from the nozzle used on the space shuttle main engine for the last 30 years of space missions. While the space shuttle main engine nozzle was hydrogen cooled to save weight, the J-2X hydrogen-cooled nozzle is shorter and attached to a lightweight, passively cooled nozzle extension.

A total of 16 tests are scheduled, tentatively beginning this Wednesday. They are expected to conclude by the end of this year.

In its first round of testing, the J-2X engine reached 100 percent power in just four tests and achieved a full flight-duration firing of 500 seconds in its eighth test, faster than any other U.S. engine. The engine was fired a total of 10 times for a cumulative 1,040 seconds of testing various aspects of performance.

The J-2X is a redesign of the heritage J-2 engine that helped send astronauts to the moon during the Apollo Program in the 1960s and 1970s. In addition to testing the engine, NASA is conducting tests on the J-2X powerpack, which includes the gas generator, oxygen and fuel turbopumps, and related ducts and valves. Tests of the powerpack components are being conducted on the A-1 Test Stand at Stennis.

The J-2X is being developed for NASA by Pratt and Whitney Rocketdyne. It is the first new liquid oxygen and liquid hydrogen rocket engine developed in 40 years that will be rated to carry humans into space.

 




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>