Small Diameter Bomb (SDB)

The Small Diameter Bomb (SDB) program, particularly the GBU-53/B Small Diameter Bomb Increment II (SDB II), is a joint initiative between the United States Air Force (USAF) and the Department of Navy (DoN), with the USAF taking the lead. The program's main goal is to improve munition precision and effectiveness while reducing collateral damage. SDB II is designed to meet various warfighter needs, such as targeting both moving and stationary objects in adverse weather, carrying multiple ordnances, and offering network-enabled weapon capabilities through Link-16 and Ultra High Frequency (UHF) data links.

A significant aim of the SDB II program is to integrate this advanced munition with a diverse array of aircraft, including the F-15E for the USAF and the F-35B/C for the DoN. The program also targets compatibility with other aircraft like the F-22, F-16, B-2, A-10, MQ-9, B-1, B-52, AC-130, and F/A-18E/F. To meet these goals, SDB II employs various carriage systems such as the Bomb Rack Unit-61 (BRU-61) and incorporates advanced technologies like cryptographic modernization for data links and enhanced guidance systems.

The development of SDB II involves ongoing engineering modifications to adapt to emerging threats and maintain system compatibility. This includes efforts in cryptographic modernization, cybersecurity enhancements, and M-Code integration for improved anti-jam capabilities. The program also focuses on reducing obsolescence through technology refresh redesigns and leveraging common component development across different weapon systems to optimize costs.

Additionally, the SDB II program prioritizes continuous testing and evaluation to ensure system performance aligns with specified requirements. This involves acquiring developmental test assets for Captive Flight Tests and platform integration testing. The program also integrates with Command and Control Infrastructure to boost operational capabilities. These efforts contribute to a broader strategy aimed at advancing weapon system capabilities while ensuring affordability and sustainability in accordance with Department of Defense objectives.