Aerojet Rocketdyne Holdings, Inc. (0HA5.L), a subsidiary of L3Harris Technologies, Inc. following its $4.7 billion acquisition completed in July 2023, designs, develops, manufactures and sells propulsion systems and precision armaments for aerospace, defense and space applications; its core offerings encompass solid rocket motors and boosters for tactical missiles, space launch vehicles and missile defense; liquid rocket engines including RS-25 for NASA's Space Launch System, RL10 upper-stage engines for satellites and interplanetary missions, and Delta IV/Atlas V propulsion; air-breathing and electric propulsion systems for hypersonic vehicles and in-space maneuvers; warheads, divert and attitude control systems, and hypersonic technologies; as well as technical services for integration, testing and lifecycle support of propulsion and armament solutions. Founded in 1942 and formerly headquartered in Sacramento, California with key facilities in Rancho Cordova, California; Canoga Park, California; Huntsville, Alabama; and Redmond, Washington, the company primarily serves U.S. Department of Defense prime contractors, NASA and commercial space operators across North America. Recent developments include a January 2024 public-private partnership with Naval Surface Warfare Center Indian Head Division to expand solid rocket motor production capacity over 10 years; a $15 million NASA payment in January 2025 for RS-25 engine production restart supporting Space Launch System requirements; and full integration into L3Harris as a dedicated segment enhancing missile defense, hypersonics and rocket engine capabilities.