Space

December 14, 2012

Beating heart of J-2X engine finishes year of successful NASA tests


J-2X Powerpack Completes Testing

NASA Dec. 13 took another step toward human exploration of new destinations in the solar system. At the agency’s Stennis Space Center in Mississippi, engineers conducted the final test-firing of the J-2X powerpack assembly, an important component of America’s next heavy-lift rocket.

The J-2X engine is the first human-rated liquid oxygen and liquid hydrogen engine developed in the United States in decades. Designed and built by NASA and industry partner Pratt & Whitney Rocketdyne of Canoga Park, Calif., the engine will power the upper stage of NASA’s 143-ton (130-metric-ton) Space Launch System rocket. The powerpack is a system of components on top of the engine that feeds propellants to the bell nozzle of the engine to produce thrust.

“The determination and focus by teams at NASA’s Marshall Space Flight Center and Stennis on designing and perfecting the J-2X engine helps show the great strides of progress made on the overall program,” said SLS Program Manager Todd May. “We are inspired to stay the course and pursue our goal of exploring deep space and traveling farther than ever before.”

The powerpack was worked out separately from the engine to more thoroughly test its limits. It also can be operated under a wider range of conditions. The tests provide a trove of data to compare with analytical predictions of the performance of several parts in the turbopump and flexible ducts.

“These tests at Stennis are similar to doctor-ordered treadmill tests for a person’s heart,” said Tom Byrd, J-2X engine lead in the SLS Liquid Engines Office at Marshall in Huntsville, Ala. “The engineers who designed and analyze the turbopumps inside the powerpack are like our doctors, using sensors installed in the assembly to monitor the run over a wide range of stressful conditions. We ran the assembly tests this year for far longer than the engine will run during a mission to space, and acquired a lot of valuable information that will help us improve the development of the J-2X engine.”

The powerpack assembly burned millions of pounds of propellants during a series of 13 tests totaling more than an hour and a half in 2012. The testing team set several records for hot-firing duration at Stennis test stands during the summer. NASA engineers will remove the assembly from the test stand to focus on tests of the fully integrated engine. Installation on a test stand at Stennis will begin in 2013.

The SLS will launch NASA’s Orion spacecraft and other payloads from the agency’s Kennedy Space Center in Florida, providing an entirely new capability for human exploration beyond low Earth orbit. The program is managed at Marshall.




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


 
 

 

NASA airborne campaigns tackle climate questions from Africa to Arctic

NASA photograph The DC-8 airborne laboratory is one of several NASA aircraft that will fly in support of five new investigations into how different aspects of the interconnected Earth system influence climate change. NASA photograph The DC-8 airborne laboratory is one of several NASA aircraft that will fly in support of five new investigations into...
 
 
NASA photograph by Aubrey Gemignani

New crew arrives at space station to continue scientific research

NASA photograph by Aubrey Gemignani The Soyuz TMA-15M rocket launches from the Baikonur Cosmodrome in Kazakhstan Nov. 24, 2014 carrying Expedition 42 Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosm...
 
 
nasa-cube

NASA opens Cube Quest Challenge for largest-ever prize of $5 million

Registration now is open for NASA’s Cube Quest Challenge, the agency’s first in-space competition that offers the agency’s largest-ever prize purse. Competitors have a shot at a share of $5 million in prize money and ...
 

 
Lockheed Martin image

Ball Aerospace equips Orion mission with key avionics, antenna hardware

Lockheed Martin image Ball Aerospace & Technologies Corp. is providing the phased array antennas and flight test cameras to prime contractor Lockheed Martin for Orion’s Exploration Flight Test-1 (EFT-1), which is an u...
 
 
NASA photograph

NASA announces new opportunities for public participation in asteroid grand challenge

NASA photograph Team NOVA Took the Winning Hackathon Prize.   Ten new projects are providing opportunities for the public to participate in NASA’s Asteroid Grand Challenge, which accelerates the agency’s astero...
 
 
XCOR Aerospace photograph by Mike Massee

XCOR Aerospace announces latest milestone in ULA program

XCOR Aerospace photograph by Mike Massee The XCOR-ULA XR-5H25 LOX-Hydrogen Rocket Engine, fed by XCOR’s proprietary rocket propellant piston pump technology. MOJAVE, Calif. XCOR Aerospace announced Nov. 20 it has complete...
 




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>