This article is based on an official press release from Northrop Grumman.

Northrop Grumman Confirms Solid Rocket Boosters Ready for Historic Artemis II Launch

Northrop Grumman has officially announced that its twin five-segment solid rocket boosters (SRBs) are fully integrated and ready to support the launch of NASA’s Artemis II mission. According to the company’s statement released on January 27, 2026, the hardware is prepared for a liftoff targeted as early as February 6, 2026, from Kennedy Space Center in Florida.

This mission represents a significant milestone in aerospace history, marking the first time humans will travel beyond the Moon’s orbit since the conclusion of the Apollo program in 1972. The boosters, which provide the majority of the thrust for the Space Launch System (SLS), are critical to propelling the four-person crew inside the Orion spacecraft toward deep space.

Powering the Space Space-Agencies Launch System

The technical specifications released by Northrop Grumman highlight the immense scale required to escape Earth’s gravity with a crewed payload. The twin boosters, standing 177 feet tall, are the largest solid rocket motors ever built for flight. Together, they generate 7.2 million pounds of thrust.

According to mission data, these boosters provide more than 75% of the total thrust at liftoff, with the SLS rocket’s total thrust reaching approximately 8.8 million pounds. The design is an evolution of the four-segment boosters used during the Space Shuttle era, the addition of a fifth segment allows the new motors to deliver 25% more total energy than their predecessors.

Jim Kalberer, Vice President of Propulsion Systems at Northrop Grumman, emphasized the role of manufacturing expertise in reaching this stage:

“We’ve leveraged our unparalleled manufacturing and solid rocket motor expertise to supply the SLS rocket with 7.2 million pounds of its 8.8 million pounds of total thrust at launch. The power and performance the Northrop Grumman-manufactured solid rocket boosters provide the SLS rocket is critical to America’s new age of exploration and building a sustainable human presence in deep space ahead of missions to Mars.”

Safety Systems and Mission Profile

In addition to the primary propulsion, Northrop Grumman confirmed its role in manufacturing safety-critical components for the Orion spacecraft’s Launch Abort System (LAS). The company produces both the abort motor and the attitude control motor. These systems are designed to pull the capsule and its crew safely away from the rocket in the event of an emergency on the launch pad or during ascent.

Crew and Timeline

The Artemis II mission is a crewed test flight designed to verify spacecraft systems, including life support, communication, and navigation, on a “free-return trajectory” around the Moon. The crew includes astronauts Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen. Following the successful integration of the boosters, the SLS rocket and Orion spacecraft were rolled out to Launch Complex 39B earlier in January, with final preparations now underway for the February launch window.

AirPro News Analysis

The readiness of the five-segment boosters signals a stabilization in the supply-chain for the Space Launch System. While the architecture relies heavily on heritage hardware from the Shuttle era, the successful integration for a crewed deep-space mission validates the engineering modifications required for the heavier lift capacity of the SLS. As NASA looks toward Artemis III and the construction of the Gateway station, the performance of these solid rocket motors will be the primary metric for assessing the sustainability of the agency’s long-term lunar infrastructure plans.

Sources

Sources: Northrop Grumman Press Release, NASA Artemis II Mission Data