[meteorite-list] NASA's Space Launch System Booster Passes Major Ground Test

From: Ron Baalke <baalke_at_meteoritecentral.com>
Date: Wed, 11 Mar 2015 15:14:48 -0700 (PDT)
Message-ID: <201503112214.t2BMEmbE007900_at_zagami.jpl.nasa.gov>

March 11, 2015
     
NASA's Space Launch System Booster Passes Major Ground Test

The largest, most powerful rocket booster ever built successfully fired up
Wednesday for a major-milestone ground test in preparation for future
missions to help propel NASA's Space Launch System (SLS) rocket and Orion
spacecraft to deep space destinations, including an asteroid and Mars.

The booster fired for two minutes, the same amount of time it will fire when
it lifts the SLS off the launch pad, and produced about 3.6 million pounds of
thrust. The test was conducted at the Promontory, Utah test facility of
commercial partner Orbital ATK, and is one of two tests planned to qualify
the booster for flight. Once qualified, the flight booster hardware will be
ready for shipment to NASA's Kennedy Space Center in Florida for the first
SLS flight.

"The work being done around the country today to build SLS is laying a solid
foundation for future exploration missions, and these missions will enable us
to pioneer far into the solar system," said William Gerstenmaier, NASA's
associate administrator for human exploration and operations. "The teams are
doing tremendous work to develop what will be a national asset for human
exploration and potential science missions."

It took months to heat the 1.6 million pound booster to 90 degrees Fahrenheit
to verify its performance at the highest end of the booster's accepted
propellant temperature range. A cold-temperature test, at a target of 40
degrees Fahrenheit, the low end of the propellant temperature range, is
planned for early 2016. These two tests will provide a full range of data for
analytical models that inform how the booster performs. During the test,
temperatures inside the booster reached more than 5,600 degrees.

"This test is a significant milestone for SLS and follows years of
development," said Todd May, SLS program manager. "Our partnership with
Orbital ATK and more than 500 suppliers across the country is keeping us on
the path to building the most powerful rocket in the world."

During the test, more than 531 instrumentation channels on the booster were
measured to help assess some 102 design objectives. The test also
demonstrated the booster meets applicable ballistic performance requirements,
such as thrust and pressure. Other objectives included data gathering on
vital motor upgrades, such as the new internal motor insulation and liner and
an improved nozzle design.

When completed, two five-segment boosters and four RS-25 main engines will
power the SLS on deep space missions. The 177-feet-long solid rocket boosters
operate in parallel with the main engines for the first two minutes of
flight. They provide more than 75 percent of the thrust needed for the rocket
to escape the gravitational pull of the Earth.

The first flight test of SLS will be configured for a 70-metric-ton (77-ton)
lift capacity and carry an uncrewed Orion spacecraft beyond low-Earth orbit
to test the performance of the integrated system. The SLS will later be
configured to provide an unprecedented lift capability of 130 metric tons
(143 tons) to enable missions farther into our solar system.

For more information on SLS, visit:

http://www.nasa.gov/sls

-end-

Rachel Kraft
Headquarters, Washington
202-358-1100
rachel.h.kraft at nasa.gov


Kim Henry
Marshall Space Flight Center, Huntsville, Ala.
256-544-0034
kimberly.h.henry at nasa.gov
Received on Wed 11 Mar 2015 06:14:48 PM PDT