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ROCKET SCIENCE
NASA awards new contract for rocket engine development
by Staff Writers
Sacramento CA (SPX) Nov 24, 2015


The new RS-25 engine developed under this contract will have fewer parts and welds and will be certified to a higher operational thrust level. The new engine benefits from improvements in materials and manufacturing techniques such as five-axis milling machines, 3-D manufacturing and digital X-rays.

NASA selected Aerojet Rocketdyne of Sacramento, California, to restart production of the RS-25 engine for the agency's Space Launch System (SLS), the most powerful rocket in the world, and deliver a certified engine. SLS will use four RS-25 engines to carry the agency's Orion spacecraft and launch explorers on deep space missions, including to an asteroid placed in lunar orbit and ultimately to Mars.

Part of NASA's strategy to minimize costs of developing the SLS rocket was to leverage the assets, capabilities, and experience of the Space Shuttle Program, so the first four missions will be flown using 16 existing shuttle engines that have been upgraded.

Under the $1.16 billion contract, Aerojet Rocketdyne will modernize the space shuttle heritage engine to make it more affordable and expendable for SLS. The contract runs November 2015 and continues through Sept. 30, 2024.

The new RS-25 engine developed under this contract will have fewer parts and welds and will be certified to a higher operational thrust level. The new engine benefits from improvements in materials and manufacturing techniques such as five-axis milling machines, 3-D manufacturing and digital X-rays.

The contract restarts the firm's production capability including furnishing the necessary management, labor, facilities, tools, equipment and materials required for this effort, implementing modern fabrication processes and affordability improvements, and producing hardware required for development and certification testing.

The contract also allows for a potential future modification that would enable NASA to order six flight engines.

NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the SLS Program for the agency. Engine testing will be performed at NASA's Stennis Space Center in Mississippi and the SLS will launch from NASA's Kennedy Space Center in Florida.

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ROCKET SCIENCE
Simulating SLS Booster Separation
Moffett Field CA (SPX) Nov 22, 2015
NASA's new heavy-lift launch vehicle, the Space Launch System (SLS), will carry 15% more payload than Saturn V and three times the payload of the space shuttle, requiring innovative rocket design. The SLS configuration consists of a center core stage with four RS-25 engines and two solid rocket boosters (SRBs), which separate from the core as fuel is exhausted soon after liftoff. To ... read more


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