155mm Self-Propelled Howitzer Improvements

The 155mm Self-Propelled Howitzer Improvements is a part of the Extended Range Cannon Artillery (ERCA) modernization effort within the U.S. Army's Research, Development, Test & Evaluation (RDT&E) budget. The program aims to integrate emerging technologies, including a new cannon, gun mount, gun drive systems, fire control systems, and rate of fire system improvements capability onto the M109A7 Self-Propelled Howitzer platform. The specific objectives include enhancing lethality through increased range and rate of fire while also improving mobility, survivability, reliability, supportability, and lethality using mature technology. The program will analyze and evaluate the impact of the new cannon technology and make modifications to the cab, mobility, and electronic architecture required to support ammunition automation, remote firing, and remote movement on the platform. Additionally, it will involve developing, evaluating, building, and testing prototypes with funding supporting work at the Watervliet Arsenal in Watervliet, NY.

The ERCA Prototype Development and Build component of Program PE 0203743A focuses on continuously improving the design and implementing changes to ERCA prototypes as informed by testing and operational assessment. This includes completion of developmental engineering efforts and ERCA prototype builds required for the First Unit Issued battalion in the 1st quarter of FY 2025. The program also involves developmental engineering efforts, ERCA prototype improvements, Milestone C documentation, First Unit Issued support activities, rate of fire preparation, and transition to Milestone C in FY 2024. Furthermore, funding supports all Program Management efforts on the Extended Range Cannon Artillery effort including development and production for all required documents, office staff, and engineering IPT development.