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ROCKET SCIENCE
Avionics System for SLS Boosters Gets 'Boost' of Its Own on Path to Space
by Megan Davidson fpr Marshall Space Flight Center
Huntsville AL (SPX) Apr 11, 2014


Artist concept of NASA's Space Launch System (SLS) solid rocket boosters firing their separation rockets and pushing away from the core stage, which continues toward space with the Orion spacecraft. Image courtesy NASA/MSFC.

The avionics that will guide NASA's Space Launch System (SLS) boosters on the rocket's trip to deep space missions will get a big "boost" toward being ready for flight through an extensive test series now being conducted at ATK's Avionics Lab in Clearfield, Utah.

The avionics system is responsible for igniting, steering and jettison of the two, five-segment solid rocket boosters for the SLS. The boosters used during the first two launches of SLS will be the world's largest at 154 feet long and 12 feet in diameter.

The booster avionics system -- including hardware, software and ground test systems -- are being integrated in a complete, forward skirt ring. The avionics testing, which will be completed this summer, will prove the system is ready to enter the qualification phase leading to SLS's first flight in 2017.

"Our team has a complete set of hardware built for the boosters, and we will test all the components -- from booster ignition through separation to make sure the hardware is functioning as designed," said Eric Corder, avionics system manager.

That testing will be done during two-minute flight simulations, with a booster test set mimicking the SLS flight computer. Avionics and the flight computer will be housed in the SLS core stage. When completed, the core stage will be more than 200 feet tall and store cryogenic liquid hydrogen and liquid oxygen that will feed the vehicle's RS-25 engines.

"Avionics is one of the most critical systems for human spaceflight," said Kent Rominger, a former astronaut who is now vice president of business development for ATK's Space Launch division. "Stressing the system beyond what it will see during flight affords us an opportunity to learn about system interactions and associated outcomes. That is exactly what is being accomplished by the team and our lab."

Once the SLS avionics booster testing is complete, the system and associated test equipment will be shipped to NASA's Marshall Space Flight Center in Huntsville, Ala. The booster avionics system will be joined with the SLS core stage avionics system at Marshall's System Integration Test Facility. Flight simulations will be performed to test and analyze SLS launch, flight and staging -- preparing for flight system certification in 2015.

Marshall manages the SLS Program for the agency. The booster avionics system was designed by NASA; ATK, prime contractor for the SLS boosters; and L-3 Cincinnati Electronics of Mason, Ohio. As the SLS evolves, it will provide an unprecedented lift capability of 130-metric-tons (143-tons) to enable missions even farther into our solar system to places like Mars.

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Related Links
Beyond Earth at NASA
Space Launch System at NASA
Rocket Science News at Space-Travel.Com






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ROCKET SCIENCE
SLS Core Stage Model 'Sounds' Off for Testing
Huntsville AL (SPX) Apr 07, 2014
A 5-percent scale model of the Space Launch System (SLS) core stage fires up for another round of acoustic testing at NASA's Marshall Space Flight Center in Huntsville, Ala. SLS, NASA's new rocket, will be the largest, most powerful rocket ever built for deep space missions. The SLS core stage, towering more than 200 feet tall with a diameter of 27.6 feet, will store cryogenic liquid hydro ... read more


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