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Northrop Grumman Corporation conducted a full-scale static fire of NASA's Booster Obsolescence and Life Extension (BOLE) solid rocket booster. This was the first demonstration test of the enhanced five-segment solid rocket motor, the world's largest and most powerful segmented solid rocket motor built for human spaceflight.
Jim Kalberer, vice president, propulsion systems, Northrop Grumman: "Today's test pushed the boundaries of large solid rocket motor design to meet rigorous performance requirements. While the motor appeared to perform well through a harsh burn environment, we observed an anomaly near the end of the two-plus minute burn. As a new design, and the largest segmented solid rocket booster ever built, this test provides us with valuable data to iterate our design for future developments.
Northrop Grumman supplied rocket propulsion for NASA's Apollo and Space Shuttle Programs and developed the five-segment SLS solid rocket booster based on the flight-proven design of the space shuttle boosters. The five-segment booster, BOLE's predecessor, generates 25 percent more power than its space shuttle predecessor, and provided over 75 percent of the SLS rocket's initial thrust during the Artemis I mission on November 15, 2022.
The BOLE booster development, awarded in 2017, represents a significant step towards more sustainable commercial practices and incorporates commonality in design and construction standards from across all of Northrop Grumman's production programs.