Solid Rocket Motor (SRM) Stage 3 and Post Boost Propulsion System
Northrop Grumman Awarded Contract to Replace the Aging ICBM System
The U.S. Air Force’s LGM-35A Sentinel (formerly Ground Based Strategic Deterrent or GBSD) weapon system is a critical modernization of the land-based leg of the U.S. nuclear triad, the backbone of America’s national security. Sentinel replaces the aging Minuteman III intercontinental ballistic missile (ICBM) system, which has been in service for more than 50 years.
In Sept 2020, the U.S. Air Force awarded a Northrop Grumman-led team the Sentinel prime contract for the Engineering and Manufacturing Development phase. Using a digital engineering approach, Sentinel will be a fully integrated weapon system that will meet the combatant commander’s current needs, while having the flexibility to affordably address changing technology and emerging threats for decades to come.
The (Sentinel) Ground Based Strategic Deterrent (GBSD) Analysis of Alternatives provided decisive analysis that continued life extension of the Minuteman III (MM III) would be more costly than a replacement system and would not address future challenges and threats to our current ICBM force. (Sentinel) is the lowest risk, highest value decision to meet current and future military requirements.” USSTRATCOM’s Statement to Congress, Feb 2020; pg. 9.
Sentinel Teammates – Roles and Responsibilities
The Northrop Grumman nationwide team is developing innovative concepts, technologies, and solutions necessary to meet the Air Force schedule, while delivering a safe, secure, reliable, and effective Sentinel system. Our team has invested significantly in the people, facilities and tools needed to be ready, and is committed to deliver Sentinel – on schedule – that meets the nation’s needs. Learn more about the Northrop Grumman-led Nationwide Team.
Launch System Infrastructure Engineering and Construction
Infrastructure Program Management
Command & Control and Training Systems
Command & Control Systems, Digital Engineering Environment, and Aerospace Vehicle Equipment
Guidance & Control Instruments and Booster Control
Kratos Defense and Security Solutions
2010 – Nuclear Posture Review
2012 – Analysis of Alternatives (AoA) begins
2015 – Milestone A/AOA approved
2016 – TMRR begins
2017 – TMRR award
2018 – Nuclear Posture Review
2019 – July – RFP released
2020 – September EMD Award
2036 – Full Operational Capability
2075 – Program remains in service