NASA Building a Better Solid Rocket Booster for Space Launch System Rocket
ATK moves a segment of the solid rocket
booster for assembly at the company's
facility in Promontory, Utah. (ATK)
View large image
Although similar to the solid rocket boosters that helped power the space shuttle to orbit, the five-segment SLS boosters include several upgrades and improvements implemented by NASA and ATK engineers. In addition, the SLS boosters will be built more affordably and efficiently than shuttle boosters, incorporating new and innovative processes and technologies.
"America's next steps in deep space exploration build on the lessons learned from our nationís rich human spaceflight history. By using the best-of-the-best from shuttle and improving on previous investments, we will produce the needed solid booster for the first SLS flights," said Dan Dumbacher, NASA's deputy associate administrator for Exploration Systems Development at NASAís headquarters in Washington, D.C. "We are encouraged by the progress being made at ATK. Their commitment to deliver a safe and high-quality rocket booster is vital as we build SLS to enable exploration to new frontiers in the solar system."
ATK employees at the company's Promontory,
Utah facility prepare a segment of a
qualification motor for NASA's Space
Launch System for transport. (ATK)
View large image
Implementing new handling processes, ATK estimates the total assembly time for the SLS booster can be reduced by approximately 46 percent overall. In one area, ATK optimized inspection methods and replaced x-ray inspections with an ultrasonic examination of the booster's nozzle, allowing technicians to evaluate the hardware on the production floor. In another, ATK reduced the number of moves from 47 to seven during one phase of booster assembly, reducing the chance of any damage in transit and greatly reducing the time it takes to complete that production process.
"By improving upon proven Space Shuttle solid rocket motor hardware and operations, our shared goal is to deliver a safe, affordable and sustainable launch vehicle," said Alex Priskos, SLS booster manager at NASA's Marshall Space Flight Center in Huntsville, Ala. "We are embracing innovation both technically and in our management processes as we design and build SLS. Through the use of new streamlined approaches and techniques we have been able to drive down costs and enhance the reliability of the hardware."
The forward segment of the qualification
motor for NASA'S Space Launch System is
transported through manufacturing and
assembly at ATK's facility in Promontory,
Utah in preparation for a full-scale
ground test there next springt. (ATK)
View large image
Watch a video about the SLS Booster Value Stream Mapping:
The initial 70-metric-ton (77 ton) configuration of the SLS will provide 10 percent more thrust than the Saturn V rocket at liftoff. The rocketís first stage will be powered by four RS-25 former space shuttle main engines flanked by two five-segment solid rocket boosters. The SLS solid rocket boosters will generate a combined 7.2 million pounds of thrust to help power the massive rocket off the launch pad.
The Marshall Center manages the SLS Program for the agency and is working closely with our partners at the Orion program office managed by NASAís Johnson Space Flight Center in Houston and the Ground Systems Development and Operations Program, which manage the operations and launch facilities at NASA's Kennedy Space Center in Florida.
For information about NASA's Space Launch System, visit:
by Bill Hubscher
NASA's Marshall Space Flight Center
Kim Henry, 256-544-0034
Marshall Space Flight Center, Huntsville, Ala.