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/Boeing image

NASA wraps up first green aviation tests on Boeing ecoDemonstrator

NASA/Boeing image NASA’s recent green aviation tests included the Active Flow Control Enhanced Vertical Tail Flight Experiment, for which 31 tiny devices called sweeping jet actuators were installed on the tail of a Boein...
 
 
onr-locust

LOCUST: Autonomous, swarming UAVs fly into the future

A new era in autonomy and unmanned systems for naval operations is on the horizon, as officials at the¬†Office of Naval Research announced April 14 recent technology demonstrations of swarming unmanned aerial vehicles (UAVs) ‚Ä...
 
 
NASA photograph by Ken Ulbrich

Second X-56A MUTT makes first flight

NASA photograph by Ken Ulbrich NASA researchers are using the X-56A, a low-cost, modular, remotely piloted aerial vehicle, to explore the behavior of lightweight, flexible aircraft structures. Researchers at NASA’s Armstrong ...
 

 
Air Force photograph by Rebecca Amber

Schaefer takes command of 412th Test Wing

Air Force photograph by Rebecca Amber Maj. Gen. Arnold Bunch Jr., Air Force Test Center commander (left), presents the 412th Test Wing guidon to Brig. Gen. Carl Schaefer signifying the beginning of his new command at the 412th ...
 
 

NASA creates partnership to advance composite materials for aircraft of future

NASA has established a public-private partnership with five organizations to advance knowledge about composite materials that could improve the performance of future aircraft. Composites are innovative new materials for building aircraft that can enhance strength while remaining lightweight. The agency selected the National Institute of Aerospace in Hampton, Va., to manage administration of the...
 
 

NASA awards IT contracts to 118 small, disadvantaged businesses

NASA has awarded 118 contracts to small, disadvantaged businesses under Solutions for Enterprise-Wide Procurement (SEWP V), a multi-award Government-Wide Acquisition Contract vehicle focused on information technology products and product-based services. Of these SEWP V contracts, 14 were awarded to businesses operating in historically underutilized business zones, 25 contracts were awarded to b...
 




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>