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Waspie_Dwarf

J-2X Engine: Year of Successful Testing

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Beating Heart of J-2X Engine Finishes Year of Successful Testing

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."

Watch a video of the test:

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.

For more information about the J-2X engine and NASA's Space Launch System, including links to video and images of Thursday's test, visit:

Media Contacts:

Rachel Kraft, 202-358-1100

NASA Headquarters, Washington

rachel.h.kraft@nasa.gov

Kim Henry, 256-544-0034

Marshall Space Flight Center

kimberly.m.henry@nasa.gov

Rebecca Strecker, 228-688-3249

Stennis Space Center, Bay St. Louis, Miss.

rebecca.a.strecker@nasa.gov

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Edited by Waspie_Dwarf
corrected tags.

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